diff --git a/.gitattributes b/.gitattributes
new file mode 100644
index 00000000..3b41682a
--- /dev/null
+++ b/.gitattributes
@@ -0,0 +1,2 @@
+/mvnw text eol=lf
+*.cmd text eol=crlf
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 00000000..1d249e99
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,36 @@
+HELP.md
+target/
+!.mvn/wrapper/maven-wrapper.jar
+!**/src/main/**/target/
+!**/src/test/**/target/
+
+
+### STS ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+
+### IntelliJ IDEA ###
+.idea
+*.iws
+*.iml
+*.ipr
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+build/
+!**/src/main/**/build/
+!**/src/test/**/build/
+
+### VS Code ###
+.vscode/
+application.properties
+
diff --git a/.mvn/wrapper/maven-wrapper.properties b/.mvn/wrapper/maven-wrapper.properties
new file mode 100644
index 00000000..d58dfb70
--- /dev/null
+++ b/.mvn/wrapper/maven-wrapper.properties
@@ -0,0 +1,19 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements. See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership. The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License. You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied. See the License for the
+# specific language governing permissions and limitations
+# under the License.
+wrapperVersion=3.3.2
+distributionType=only-script
+distributionUrl=https://repo.maven.apache.org/maven2/org/apache/maven/apache-maven/3.9.9/apache-maven-3.9.9-bin.zip
diff --git a/Instructions.md b/Instructions.md
new file mode 100644
index 00000000..df676c12
--- /dev/null
+++ b/Instructions.md
@@ -0,0 +1,188 @@
+
+
+# HW | Java IronLibrary (Unit 3 homework)
+
+## Introduction
+
+For this homework, you will be building a Library Management System, that will help managing and acquiring data about the books that are being used by students.
+
+## Instructions
+
+Let's walk through the details of the homework:
+
+### Classes
+
+Four main classes are necessary to complete this homework.
+
+These classes will be called **Author**, **Book**, **Student** and **Issue**.
+
+
+
+**Book class**
+
+This class will have:
+
+- Variable called `isbn` of data type `string`, representing the **International Standard Book Number** and acting as the unique identifier for the table book (Private member)
+- Variable called `title` of data type `string` (Private member)
+- Variable called `category` of data type `string` (Private member)
+- Variable called `quantity` of data type `integer` (Private member)
+- A parameterized constructor that takes `isbn`, `title`, `category` and a `quantity`
+- Public Getter functions to access these variables
+- Public Setter functions to change these variables
+- Optional attributes are accepted if needed based on the code structure
+
+
+
+**Author class**
+
+This class will have:
+
+- Variable called `authorId` of data type `integer`, auto-incremented (Private member)
+- Variable called `name` of data type `string` (Private member)
+- Variable called `email` of data type `string` (Private member)
+- Variable called `authorBook` of data type `Book`, representing a One-to-One relationship with `Book` (Private member)
+- A parameterized constructor that takes `name`, `email` and `authorBook`
+- Public Getter functions to access these variables
+- Public Setter functions to change these variables
+- Optional attributes are accepted if needed based on the code structure
+
+
+
+**Issue class**
+
+This class will have:
+
+- Variable called `issueId` of data type `integer`, auto-incremented (Private member)
+- Variable called `issueDate` of data type `string` (Private member)
+- Variable called `returnDate` of data type `string` (Private member)
+- Variable called `issueStudent` of data type `Student`, representing a One-to-One relationship with `Student`(Private member)
+- Variable called `issueBook` of data type `Book`, representing a One-to-One relationship with `Book` (Private member)
+- A parameterized constructor that takes `issueDate`, `returnDate`, `issueStudent` and `issueBook`
+- Public Getter functions to access these variables
+- Public Setter functions to change these variables
+- Optional attributes are accepted if needed based on the code structure
+
+
+
+**Student class**
+
+This class will have:
+
+- Variable called `usn` of data type `string`, representing the **Universal Student Number** and acting as the unique identifier for the table student (Private member)
+- Variable called `name` of data type `string` (Private member)
+- A parameterized constructor that takes `usn` and `name`
+- Public Getter functions to access these variables
+- Public Setter functions to change these variables
+- Optional attributes are accepted if needed based on the code structure
+
+## How the application works
+
+After starting this application, a list of options will pop up for the user. The user will be asked to input a number based on the list of options displayed, such as adding a book, searching for a book, issuing a book for a student, etc.
+After a certain action is executed, the menu is re-displayed for the user automatically.
+
+The menu should have the following options:
+
+1. Add a book
+2. Search book by title
+3. Search book by category
+4. Search book by Author
+5. List all books along with author
+6. Issue book to student
+7. List books by usn
+8. Exit
+
+## Actions
+
+1. **Add a book**: This action is responsible of adding a book and its author in the system. The user will be prompted to enter the details of both the book and the author in the following format:
+
+```
+Enter your choice: 1
+Enter isbn : 978-3-16-148410-0
+Enter title : The Notebook
+Enter category : Romance
+Enter Author name : Nicholas Sparks
+Enter Author mail : nicholassparks@gmail.com
+Enter number of books : 4
+```
+
+2. **Search book by title**: This action is responsible for searching a book by title.
+
+```
+Enter your choice: 2
+Enter title : The Notebook
+
+Book ISBN Book Title Category No of Books
+978-3-16-148410-0 The Notebook Romance 4
+```
+
+3. **Search book by category**: This action is responsible for searching a book by category.
+
+```
+Enter your choice: 3
+Enter category : Romance
+
+Book ISBN Book Title Category No of Books
+978-3-16-148410-0 The Notebook Romance 4
+```
+
+4. **Search book by author**: This action is responsible for searching a book by author name.
+
+```
+Enter your choice: 4
+Enter name : Nicholas Sparks
+
+Book ISBN Book Title Category No of Books
+978-3-16-148410-0 The Notebook Romance 4
+```
+
+5. **List all books along with author**: This action is responsible for listing all the books available and there corresponding authors.
+
+```
+Enter your choice: 5
+
+Book ISBN Book Title Category No of Books Author name Author mail
+978-3-16-148410-0 The Notebook Romance 4 Nicholas Sparks nicholassparks@gmail.com
+978-3-17-148410-0 Da Vinci Code Mystery 5 Dan Brown danbrown@gmail.com
+```
+
+6. **Issue book to student**: This action is responsible for creating a student and issuing him/her the specified book. The date issued represent the current date and the return date should be after 7 days.
+
+```
+Enter your choice: 6
+Enter usn : 09003688800
+Enter name : John Doe
+Enter book ISBN : 978-3-17-148410-0
+
+Book issued. Return date : Mon Aug 01 19:45:40 EEST 2022
+```
+
+7. **List books by usn**: This action is responsible for listing all books rented by the specified student.
+
+```
+Enter your choice: 7
+Enter usn : 09003688800
+
+Book Title Student Name Return date
+Da Vinci Code John Doe 2022-08-01 16:45:40.636000
+```
+
+## Requirements
+
+For this project, you must accomplish all of the following:
+
+1. Navigate through a text-based menu using Standard Input and Output.
+2. Create unit tests for every method other than basic getters, setters and constructors (getters and setters with logic do require unit tests).
+3. Handle all exceptions gracefully (incorrect input should not crash the program).
+4. All data should be stored in a normalized SQL database.
+
+### Bonus
+
+1. Add more options that can help display more information such as **List books to be returned today**, etc.
+
+## Important Notes
+
+- Everyone in the squad should contribute equally to the project in time and lines of code written.
+- All code must be reviewed before it is merged into the `master` branch.
+- All squad members must participate in code review.
+- Every repository should have a README file with clear instructions, demo files, or any documentation needed so other teams don't have problems with the review.
+- This is intended to be a challenging assignment. You will have to rely heavily on your teammates and independent research. Learning independently is a hallmark of a good developer and our job is to turn you into good developers. This process may be frustrating but you will learn a ton!
diff --git a/README.md b/README.md
index df676c12..6dba3d52 100644
--- a/README.md
+++ b/README.md
@@ -1,101 +1,61 @@
-
+# IronLibrary
-# HW | Java IronLibrary (Unit 3 homework)
+## Introducción
-## Introduction
+Este proyecto consiste en un sistema de gestión de biblioteca que permite administrar y obtener datos sobre los libros utilizados por los estudiantes. A continuación, se detallan las instrucciones para ejecutar y probar la aplicación.
-For this homework, you will be building a Library Management System, that will help managing and acquiring data about the books that are being used by students.
+---
-## Instructions
+## Requisitos previos
-Let's walk through the details of the homework:
+1. **Java**: Java 21.
+2. **Maven**: correctamente configurado.
+3. **Base de datos**: MySQL o MariaDB (ajustando las credenciales en el archivo `application.properties`).
-### Classes
+---
-Four main classes are necessary to complete this homework.
+## Instalación
-These classes will be called **Author**, **Book**, **Student** and **Issue**.
+1. Clona el repositorio:
+ ```bash
+ git clone https://github.com/VAlexS/homework-java-ironlibrary
+ cd homework-java-ironlibrary
+ ```
-
+2. Compila el proyecto:
+ ```bash
+ mvn clean install
+ ```
-**Book class**
+3. Ejecuta la aplicación:
+ ```bash
+ mvn spring-boot:run
+ ```
-This class will have:
+---
-- Variable called `isbn` of data type `string`, representing the **International Standard Book Number** and acting as the unique identifier for the table book (Private member)
-- Variable called `title` of data type `string` (Private member)
-- Variable called `category` of data type `string` (Private member)
-- Variable called `quantity` of data type `integer` (Private member)
-- A parameterized constructor that takes `isbn`, `title`, `category` and a `quantity`
-- Public Getter functions to access these variables
-- Public Setter functions to change these variables
-- Optional attributes are accepted if needed based on the code structure
+## Uso
-
+Al iniciar la aplicación, se mostrará un menú interactivo en la consola. A continuación, se presentan capturas de pantalla y ejemplos de uso.
-**Author class**
+### Menú principal
-This class will have:
-
-- Variable called `authorId` of data type `integer`, auto-incremented (Private member)
-- Variable called `name` of data type `string` (Private member)
-- Variable called `email` of data type `string` (Private member)
-- Variable called `authorBook` of data type `Book`, representing a One-to-One relationship with `Book` (Private member)
-- A parameterized constructor that takes `name`, `email` and `authorBook`
-- Public Getter functions to access these variables
-- Public Setter functions to change these variables
-- Optional attributes are accepted if needed based on the code structure
-
-
-
-**Issue class**
-
-This class will have:
-
-- Variable called `issueId` of data type `integer`, auto-incremented (Private member)
-- Variable called `issueDate` of data type `string` (Private member)
-- Variable called `returnDate` of data type `string` (Private member)
-- Variable called `issueStudent` of data type `Student`, representing a One-to-One relationship with `Student`(Private member)
-- Variable called `issueBook` of data type `Book`, representing a One-to-One relationship with `Book` (Private member)
-- A parameterized constructor that takes `issueDate`, `returnDate`, `issueStudent` and `issueBook`
-- Public Getter functions to access these variables
-- Public Setter functions to change these variables
-- Optional attributes are accepted if needed based on the code structure
-
-
-
-**Student class**
-
-This class will have:
-
-- Variable called `usn` of data type `string`, representing the **Universal Student Number** and acting as the unique identifier for the table student (Private member)
-- Variable called `name` of data type `string` (Private member)
-- A parameterized constructor that takes `usn` and `name`
-- Public Getter functions to access these variables
-- Public Setter functions to change these variables
-- Optional attributes are accepted if needed based on the code structure
-
-## How the application works
-
-After starting this application, a list of options will pop up for the user. The user will be asked to input a number based on the list of options displayed, such as adding a book, searching for a book, issuing a book for a student, etc.
-After a certain action is executed, the menu is re-displayed for the user automatically.
-
-The menu should have the following options:
-
-1. Add a book
-2. Search book by title
-3. Search book by category
-4. Search book by Author
-5. List all books along with author
-6. Issue book to student
-7. List books by usn
-8. Exit
-
-## Actions
+```plaintext
+=========== 📖 Iron Library ===========
+1. 📕 Add a book
+2. 🔎 Search book by title
+3. 🗂️ Search book by category
+4. 🖋️ Search book by author
+5. 📚 List all books along with author
+6. 🎓 Issue book to student
+7. 🆔 List books by USN
+8. 🚪 Exit
+Choose an option:
+```
-1. **Add a book**: This action is responsible of adding a book and its author in the system. The user will be prompted to enter the details of both the book and the author in the following format:
+### Ejemplo: Agregar un libro
-```
+```plaintext
Enter your choice: 1
Enter isbn : 978-3-16-148410-0
Enter title : The Notebook
@@ -103,11 +63,12 @@ Enter category : Romance
Enter Author name : Nicholas Sparks
Enter Author mail : nicholassparks@gmail.com
Enter number of books : 4
+Record created successfully!
```
-2. **Search book by title**: This action is responsible for searching a book by title.
+### Ejemplo: Buscar un libro por título
-```
+```plaintext
Enter your choice: 2
Enter title : The Notebook
@@ -115,74 +76,25 @@ Book ISBN Book Title Category No of Books
978-3-16-148410-0 The Notebook Romance 4
```
-3. **Search book by category**: This action is responsible for searching a book by category.
-
-```
-Enter your choice: 3
-Enter category : Romance
-
-Book ISBN Book Title Category No of Books
-978-3-16-148410-0 The Notebook Romance 4
-```
-
-4. **Search book by author**: This action is responsible for searching a book by author name.
-
-```
-Enter your choice: 4
-Enter name : Nicholas Sparks
-
-Book ISBN Book Title Category No of Books
-978-3-16-148410-0 The Notebook Romance 4
-```
-
-5. **List all books along with author**: This action is responsible for listing all the books available and there corresponding authors.
+### Ejemplo: Emitir un libro a un estudiante
-```
-Enter your choice: 5
-
-Book ISBN Book Title Category No of Books Author name Author mail
-978-3-16-148410-0 The Notebook Romance 4 Nicholas Sparks nicholassparks@gmail.com
-978-3-17-148410-0 Da Vinci Code Mystery 5 Dan Brown danbrown@gmail.com
-```
-
-6. **Issue book to student**: This action is responsible for creating a student and issuing him/her the specified book. The date issued represent the current date and the return date should be after 7 days.
-
-```
+```plaintext
Enter your choice: 6
Enter usn : 09003688800
Enter name : John Doe
Enter book ISBN : 978-3-17-148410-0
-Book issued. Return date : Mon Aug 01 19:45:40 EEST 2022
+Book issued. Return date : 2023-10-15
```
-7. **List books by usn**: This action is responsible for listing all books rented by the specified student.
+---
-```
-Enter your choice: 7
-Enter usn : 09003688800
+## Pruebas
-Book Title Student Name Return date
-Da Vinci Code John Doe 2022-08-01 16:45:40.636000
-```
+El proyecto incluye pruebas unitarias para todos los servicios principales. Para ejecutarlas, utiliza el siguiente comando:
-## Requirements
-
-For this project, you must accomplish all of the following:
-
-1. Navigate through a text-based menu using Standard Input and Output.
-2. Create unit tests for every method other than basic getters, setters and constructors (getters and setters with logic do require unit tests).
-3. Handle all exceptions gracefully (incorrect input should not crash the program).
-4. All data should be stored in a normalized SQL database.
-
-### Bonus
-
-1. Add more options that can help display more information such as **List books to be returned today**, etc.
+```bash
+mvn test
+```
-## Important Notes
-- Everyone in the squad should contribute equally to the project in time and lines of code written.
-- All code must be reviewed before it is merged into the `master` branch.
-- All squad members must participate in code review.
-- Every repository should have a README file with clear instructions, demo files, or any documentation needed so other teams don't have problems with the review.
-- This is intended to be a challenging assignment. You will have to rely heavily on your teammates and independent research. Learning independently is a hallmark of a good developer and our job is to turn you into good developers. This process may be frustrating but you will learn a ton!
diff --git a/mvnw b/mvnw
new file mode 100644
index 00000000..19529ddf
--- /dev/null
+++ b/mvnw
@@ -0,0 +1,259 @@
+#!/bin/sh
+# ----------------------------------------------------------------------------
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements. See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership. The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License. You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied. See the License for the
+# specific language governing permissions and limitations
+# under the License.
+# ----------------------------------------------------------------------------
+
+# ----------------------------------------------------------------------------
+# Apache Maven Wrapper startup batch script, version 3.3.2
+#
+# Optional ENV vars
+# -----------------
+# JAVA_HOME - location of a JDK home dir, required when download maven via java source
+# MVNW_REPOURL - repo url base for downloading maven distribution
+# MVNW_USERNAME/MVNW_PASSWORD - user and password for downloading maven
+# MVNW_VERBOSE - true: enable verbose log; debug: trace the mvnw script; others: silence the output
+# ----------------------------------------------------------------------------
+
+set -euf
+[ "${MVNW_VERBOSE-}" != debug ] || set -x
+
+# OS specific support.
+native_path() { printf %s\\n "$1"; }
+case "$(uname)" in
+CYGWIN* | MINGW*)
+ [ -z "${JAVA_HOME-}" ] || JAVA_HOME="$(cygpath --unix "$JAVA_HOME")"
+ native_path() { cygpath --path --windows "$1"; }
+ ;;
+esac
+
+# set JAVACMD and JAVACCMD
+set_java_home() {
+ # For Cygwin and MinGW, ensure paths are in Unix format before anything is touched
+ if [ -n "${JAVA_HOME-}" ]; then
+ if [ -x "$JAVA_HOME/jre/sh/java" ]; then
+ # IBM's JDK on AIX uses strange locations for the executables
+ JAVACMD="$JAVA_HOME/jre/sh/java"
+ JAVACCMD="$JAVA_HOME/jre/sh/javac"
+ else
+ JAVACMD="$JAVA_HOME/bin/java"
+ JAVACCMD="$JAVA_HOME/bin/javac"
+
+ if [ ! -x "$JAVACMD" ] || [ ! -x "$JAVACCMD" ]; then
+ echo "The JAVA_HOME environment variable is not defined correctly, so mvnw cannot run." >&2
+ echo "JAVA_HOME is set to \"$JAVA_HOME\", but \"\$JAVA_HOME/bin/java\" or \"\$JAVA_HOME/bin/javac\" does not exist." >&2
+ return 1
+ fi
+ fi
+ else
+ JAVACMD="$(
+ 'set' +e
+ 'unset' -f command 2>/dev/null
+ 'command' -v java
+ )" || :
+ JAVACCMD="$(
+ 'set' +e
+ 'unset' -f command 2>/dev/null
+ 'command' -v javac
+ )" || :
+
+ if [ ! -x "${JAVACMD-}" ] || [ ! -x "${JAVACCMD-}" ]; then
+ echo "The java/javac command does not exist in PATH nor is JAVA_HOME set, so mvnw cannot run." >&2
+ return 1
+ fi
+ fi
+}
+
+# hash string like Java String::hashCode
+hash_string() {
+ str="${1:-}" h=0
+ while [ -n "$str" ]; do
+ char="${str%"${str#?}"}"
+ h=$(((h * 31 + $(LC_CTYPE=C printf %d "'$char")) % 4294967296))
+ str="${str#?}"
+ done
+ printf %x\\n $h
+}
+
+verbose() { :; }
+[ "${MVNW_VERBOSE-}" != true ] || verbose() { printf %s\\n "${1-}"; }
+
+die() {
+ printf %s\\n "$1" >&2
+ exit 1
+}
+
+trim() {
+ # MWRAPPER-139:
+ # Trims trailing and leading whitespace, carriage returns, tabs, and linefeeds.
+ # Needed for removing poorly interpreted newline sequences when running in more
+ # exotic environments such as mingw bash on Windows.
+ printf "%s" "${1}" | tr -d '[:space:]'
+}
+
+# parse distributionUrl and optional distributionSha256Sum, requires .mvn/wrapper/maven-wrapper.properties
+while IFS="=" read -r key value; do
+ case "${key-}" in
+ distributionUrl) distributionUrl=$(trim "${value-}") ;;
+ distributionSha256Sum) distributionSha256Sum=$(trim "${value-}") ;;
+ esac
+done <"${0%/*}/.mvn/wrapper/maven-wrapper.properties"
+[ -n "${distributionUrl-}" ] || die "cannot read distributionUrl property in ${0%/*}/.mvn/wrapper/maven-wrapper.properties"
+
+case "${distributionUrl##*/}" in
+maven-mvnd-*bin.*)
+ MVN_CMD=mvnd.sh _MVNW_REPO_PATTERN=/maven/mvnd/
+ case "${PROCESSOR_ARCHITECTURE-}${PROCESSOR_ARCHITEW6432-}:$(uname -a)" in
+ *AMD64:CYGWIN* | *AMD64:MINGW*) distributionPlatform=windows-amd64 ;;
+ :Darwin*x86_64) distributionPlatform=darwin-amd64 ;;
+ :Darwin*arm64) distributionPlatform=darwin-aarch64 ;;
+ :Linux*x86_64*) distributionPlatform=linux-amd64 ;;
+ *)
+ echo "Cannot detect native platform for mvnd on $(uname)-$(uname -m), use pure java version" >&2
+ distributionPlatform=linux-amd64
+ ;;
+ esac
+ distributionUrl="${distributionUrl%-bin.*}-$distributionPlatform.zip"
+ ;;
+maven-mvnd-*) MVN_CMD=mvnd.sh _MVNW_REPO_PATTERN=/maven/mvnd/ ;;
+*) MVN_CMD="mvn${0##*/mvnw}" _MVNW_REPO_PATTERN=/org/apache/maven/ ;;
+esac
+
+# apply MVNW_REPOURL and calculate MAVEN_HOME
+# maven home pattern: ~/.m2/wrapper/dists/{apache-maven-,maven-mvnd--}/
+[ -z "${MVNW_REPOURL-}" ] || distributionUrl="$MVNW_REPOURL$_MVNW_REPO_PATTERN${distributionUrl#*"$_MVNW_REPO_PATTERN"}"
+distributionUrlName="${distributionUrl##*/}"
+distributionUrlNameMain="${distributionUrlName%.*}"
+distributionUrlNameMain="${distributionUrlNameMain%-bin}"
+MAVEN_USER_HOME="${MAVEN_USER_HOME:-${HOME}/.m2}"
+MAVEN_HOME="${MAVEN_USER_HOME}/wrapper/dists/${distributionUrlNameMain-}/$(hash_string "$distributionUrl")"
+
+exec_maven() {
+ unset MVNW_VERBOSE MVNW_USERNAME MVNW_PASSWORD MVNW_REPOURL || :
+ exec "$MAVEN_HOME/bin/$MVN_CMD" "$@" || die "cannot exec $MAVEN_HOME/bin/$MVN_CMD"
+}
+
+if [ -d "$MAVEN_HOME" ]; then
+ verbose "found existing MAVEN_HOME at $MAVEN_HOME"
+ exec_maven "$@"
+fi
+
+case "${distributionUrl-}" in
+*?-bin.zip | *?maven-mvnd-?*-?*.zip) ;;
+*) die "distributionUrl is not valid, must match *-bin.zip or maven-mvnd-*.zip, but found '${distributionUrl-}'" ;;
+esac
+
+# prepare tmp dir
+if TMP_DOWNLOAD_DIR="$(mktemp -d)" && [ -d "$TMP_DOWNLOAD_DIR" ]; then
+ clean() { rm -rf -- "$TMP_DOWNLOAD_DIR"; }
+ trap clean HUP INT TERM EXIT
+else
+ die "cannot create temp dir"
+fi
+
+mkdir -p -- "${MAVEN_HOME%/*}"
+
+# Download and Install Apache Maven
+verbose "Couldn't find MAVEN_HOME, downloading and installing it ..."
+verbose "Downloading from: $distributionUrl"
+verbose "Downloading to: $TMP_DOWNLOAD_DIR/$distributionUrlName"
+
+# select .zip or .tar.gz
+if ! command -v unzip >/dev/null; then
+ distributionUrl="${distributionUrl%.zip}.tar.gz"
+ distributionUrlName="${distributionUrl##*/}"
+fi
+
+# verbose opt
+__MVNW_QUIET_WGET=--quiet __MVNW_QUIET_CURL=--silent __MVNW_QUIET_UNZIP=-q __MVNW_QUIET_TAR=''
+[ "${MVNW_VERBOSE-}" != true ] || __MVNW_QUIET_WGET='' __MVNW_QUIET_CURL='' __MVNW_QUIET_UNZIP='' __MVNW_QUIET_TAR=v
+
+# normalize http auth
+case "${MVNW_PASSWORD:+has-password}" in
+'') MVNW_USERNAME='' MVNW_PASSWORD='' ;;
+has-password) [ -n "${MVNW_USERNAME-}" ] || MVNW_USERNAME='' MVNW_PASSWORD='' ;;
+esac
+
+if [ -z "${MVNW_USERNAME-}" ] && command -v wget >/dev/null; then
+ verbose "Found wget ... using wget"
+ wget ${__MVNW_QUIET_WGET:+"$__MVNW_QUIET_WGET"} "$distributionUrl" -O "$TMP_DOWNLOAD_DIR/$distributionUrlName" || die "wget: Failed to fetch $distributionUrl"
+elif [ -z "${MVNW_USERNAME-}" ] && command -v curl >/dev/null; then
+ verbose "Found curl ... using curl"
+ curl ${__MVNW_QUIET_CURL:+"$__MVNW_QUIET_CURL"} -f -L -o "$TMP_DOWNLOAD_DIR/$distributionUrlName" "$distributionUrl" || die "curl: Failed to fetch $distributionUrl"
+elif set_java_home; then
+ verbose "Falling back to use Java to download"
+ javaSource="$TMP_DOWNLOAD_DIR/Downloader.java"
+ targetZip="$TMP_DOWNLOAD_DIR/$distributionUrlName"
+ cat >"$javaSource" <<-END
+ public class Downloader extends java.net.Authenticator
+ {
+ protected java.net.PasswordAuthentication getPasswordAuthentication()
+ {
+ return new java.net.PasswordAuthentication( System.getenv( "MVNW_USERNAME" ), System.getenv( "MVNW_PASSWORD" ).toCharArray() );
+ }
+ public static void main( String[] args ) throws Exception
+ {
+ setDefault( new Downloader() );
+ java.nio.file.Files.copy( java.net.URI.create( args[0] ).toURL().openStream(), java.nio.file.Paths.get( args[1] ).toAbsolutePath().normalize() );
+ }
+ }
+ END
+ # For Cygwin/MinGW, switch paths to Windows format before running javac and java
+ verbose " - Compiling Downloader.java ..."
+ "$(native_path "$JAVACCMD")" "$(native_path "$javaSource")" || die "Failed to compile Downloader.java"
+ verbose " - Running Downloader.java ..."
+ "$(native_path "$JAVACMD")" -cp "$(native_path "$TMP_DOWNLOAD_DIR")" Downloader "$distributionUrl" "$(native_path "$targetZip")"
+fi
+
+# If specified, validate the SHA-256 sum of the Maven distribution zip file
+if [ -n "${distributionSha256Sum-}" ]; then
+ distributionSha256Result=false
+ if [ "$MVN_CMD" = mvnd.sh ]; then
+ echo "Checksum validation is not supported for maven-mvnd." >&2
+ echo "Please disable validation by removing 'distributionSha256Sum' from your maven-wrapper.properties." >&2
+ exit 1
+ elif command -v sha256sum >/dev/null; then
+ if echo "$distributionSha256Sum $TMP_DOWNLOAD_DIR/$distributionUrlName" | sha256sum -c >/dev/null 2>&1; then
+ distributionSha256Result=true
+ fi
+ elif command -v shasum >/dev/null; then
+ if echo "$distributionSha256Sum $TMP_DOWNLOAD_DIR/$distributionUrlName" | shasum -a 256 -c >/dev/null 2>&1; then
+ distributionSha256Result=true
+ fi
+ else
+ echo "Checksum validation was requested but neither 'sha256sum' or 'shasum' are available." >&2
+ echo "Please install either command, or disable validation by removing 'distributionSha256Sum' from your maven-wrapper.properties." >&2
+ exit 1
+ fi
+ if [ $distributionSha256Result = false ]; then
+ echo "Error: Failed to validate Maven distribution SHA-256, your Maven distribution might be compromised." >&2
+ echo "If you updated your Maven version, you need to update the specified distributionSha256Sum property." >&2
+ exit 1
+ fi
+fi
+
+# unzip and move
+if command -v unzip >/dev/null; then
+ unzip ${__MVNW_QUIET_UNZIP:+"$__MVNW_QUIET_UNZIP"} "$TMP_DOWNLOAD_DIR/$distributionUrlName" -d "$TMP_DOWNLOAD_DIR" || die "failed to unzip"
+else
+ tar xzf${__MVNW_QUIET_TAR:+"$__MVNW_QUIET_TAR"} "$TMP_DOWNLOAD_DIR/$distributionUrlName" -C "$TMP_DOWNLOAD_DIR" || die "failed to untar"
+fi
+printf %s\\n "$distributionUrl" >"$TMP_DOWNLOAD_DIR/$distributionUrlNameMain/mvnw.url"
+mv -- "$TMP_DOWNLOAD_DIR/$distributionUrlNameMain" "$MAVEN_HOME" || [ -d "$MAVEN_HOME" ] || die "fail to move MAVEN_HOME"
+
+clean || :
+exec_maven "$@"
diff --git a/mvnw.cmd b/mvnw.cmd
new file mode 100644
index 00000000..249bdf38
--- /dev/null
+++ b/mvnw.cmd
@@ -0,0 +1,149 @@
+<# : batch portion
+@REM ----------------------------------------------------------------------------
+@REM Licensed to the Apache Software Foundation (ASF) under one
+@REM or more contributor license agreements. See the NOTICE file
+@REM distributed with this work for additional information
+@REM regarding copyright ownership. The ASF licenses this file
+@REM to you under the Apache License, Version 2.0 (the
+@REM "License"); you may not use this file except in compliance
+@REM with the License. You may obtain a copy of the License at
+@REM
+@REM http://www.apache.org/licenses/LICENSE-2.0
+@REM
+@REM Unless required by applicable law or agreed to in writing,
+@REM software distributed under the License is distributed on an
+@REM "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+@REM KIND, either express or implied. See the License for the
+@REM specific language governing permissions and limitations
+@REM under the License.
+@REM ----------------------------------------------------------------------------
+
+@REM ----------------------------------------------------------------------------
+@REM Apache Maven Wrapper startup batch script, version 3.3.2
+@REM
+@REM Optional ENV vars
+@REM MVNW_REPOURL - repo url base for downloading maven distribution
+@REM MVNW_USERNAME/MVNW_PASSWORD - user and password for downloading maven
+@REM MVNW_VERBOSE - true: enable verbose log; others: silence the output
+@REM ----------------------------------------------------------------------------
+
+@IF "%__MVNW_ARG0_NAME__%"=="" (SET __MVNW_ARG0_NAME__=%~nx0)
+@SET __MVNW_CMD__=
+@SET __MVNW_ERROR__=
+@SET __MVNW_PSMODULEP_SAVE=%PSModulePath%
+@SET PSModulePath=
+@FOR /F "usebackq tokens=1* delims==" %%A IN (`powershell -noprofile "& {$scriptDir='%~dp0'; $script='%__MVNW_ARG0_NAME__%'; icm -ScriptBlock ([Scriptblock]::Create((Get-Content -Raw '%~f0'))) -NoNewScope}"`) DO @(
+ IF "%%A"=="MVN_CMD" (set __MVNW_CMD__=%%B) ELSE IF "%%B"=="" (echo %%A) ELSE (echo %%A=%%B)
+)
+@SET PSModulePath=%__MVNW_PSMODULEP_SAVE%
+@SET __MVNW_PSMODULEP_SAVE=
+@SET __MVNW_ARG0_NAME__=
+@SET MVNW_USERNAME=
+@SET MVNW_PASSWORD=
+@IF NOT "%__MVNW_CMD__%"=="" (%__MVNW_CMD__% %*)
+@echo Cannot start maven from wrapper >&2 && exit /b 1
+@GOTO :EOF
+: end batch / begin powershell #>
+
+$ErrorActionPreference = "Stop"
+if ($env:MVNW_VERBOSE -eq "true") {
+ $VerbosePreference = "Continue"
+}
+
+# calculate distributionUrl, requires .mvn/wrapper/maven-wrapper.properties
+$distributionUrl = (Get-Content -Raw "$scriptDir/.mvn/wrapper/maven-wrapper.properties" | ConvertFrom-StringData).distributionUrl
+if (!$distributionUrl) {
+ Write-Error "cannot read distributionUrl property in $scriptDir/.mvn/wrapper/maven-wrapper.properties"
+}
+
+switch -wildcard -casesensitive ( $($distributionUrl -replace '^.*/','') ) {
+ "maven-mvnd-*" {
+ $USE_MVND = $true
+ $distributionUrl = $distributionUrl -replace '-bin\.[^.]*$',"-windows-amd64.zip"
+ $MVN_CMD = "mvnd.cmd"
+ break
+ }
+ default {
+ $USE_MVND = $false
+ $MVN_CMD = $script -replace '^mvnw','mvn'
+ break
+ }
+}
+
+# apply MVNW_REPOURL and calculate MAVEN_HOME
+# maven home pattern: ~/.m2/wrapper/dists/{apache-maven-,maven-mvnd--}/
+if ($env:MVNW_REPOURL) {
+ $MVNW_REPO_PATTERN = if ($USE_MVND) { "/org/apache/maven/" } else { "/maven/mvnd/" }
+ $distributionUrl = "$env:MVNW_REPOURL$MVNW_REPO_PATTERN$($distributionUrl -replace '^.*'+$MVNW_REPO_PATTERN,'')"
+}
+$distributionUrlName = $distributionUrl -replace '^.*/',''
+$distributionUrlNameMain = $distributionUrlName -replace '\.[^.]*$','' -replace '-bin$',''
+$MAVEN_HOME_PARENT = "$HOME/.m2/wrapper/dists/$distributionUrlNameMain"
+if ($env:MAVEN_USER_HOME) {
+ $MAVEN_HOME_PARENT = "$env:MAVEN_USER_HOME/wrapper/dists/$distributionUrlNameMain"
+}
+$MAVEN_HOME_NAME = ([System.Security.Cryptography.MD5]::Create().ComputeHash([byte[]][char[]]$distributionUrl) | ForEach-Object {$_.ToString("x2")}) -join ''
+$MAVEN_HOME = "$MAVEN_HOME_PARENT/$MAVEN_HOME_NAME"
+
+if (Test-Path -Path "$MAVEN_HOME" -PathType Container) {
+ Write-Verbose "found existing MAVEN_HOME at $MAVEN_HOME"
+ Write-Output "MVN_CMD=$MAVEN_HOME/bin/$MVN_CMD"
+ exit $?
+}
+
+if (! $distributionUrlNameMain -or ($distributionUrlName -eq $distributionUrlNameMain)) {
+ Write-Error "distributionUrl is not valid, must end with *-bin.zip, but found $distributionUrl"
+}
+
+# prepare tmp dir
+$TMP_DOWNLOAD_DIR_HOLDER = New-TemporaryFile
+$TMP_DOWNLOAD_DIR = New-Item -Itemtype Directory -Path "$TMP_DOWNLOAD_DIR_HOLDER.dir"
+$TMP_DOWNLOAD_DIR_HOLDER.Delete() | Out-Null
+trap {
+ if ($TMP_DOWNLOAD_DIR.Exists) {
+ try { Remove-Item $TMP_DOWNLOAD_DIR -Recurse -Force | Out-Null }
+ catch { Write-Warning "Cannot remove $TMP_DOWNLOAD_DIR" }
+ }
+}
+
+New-Item -Itemtype Directory -Path "$MAVEN_HOME_PARENT" -Force | Out-Null
+
+# Download and Install Apache Maven
+Write-Verbose "Couldn't find MAVEN_HOME, downloading and installing it ..."
+Write-Verbose "Downloading from: $distributionUrl"
+Write-Verbose "Downloading to: $TMP_DOWNLOAD_DIR/$distributionUrlName"
+
+$webclient = New-Object System.Net.WebClient
+if ($env:MVNW_USERNAME -and $env:MVNW_PASSWORD) {
+ $webclient.Credentials = New-Object System.Net.NetworkCredential($env:MVNW_USERNAME, $env:MVNW_PASSWORD)
+}
+[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12
+$webclient.DownloadFile($distributionUrl, "$TMP_DOWNLOAD_DIR/$distributionUrlName") | Out-Null
+
+# If specified, validate the SHA-256 sum of the Maven distribution zip file
+$distributionSha256Sum = (Get-Content -Raw "$scriptDir/.mvn/wrapper/maven-wrapper.properties" | ConvertFrom-StringData).distributionSha256Sum
+if ($distributionSha256Sum) {
+ if ($USE_MVND) {
+ Write-Error "Checksum validation is not supported for maven-mvnd. `nPlease disable validation by removing 'distributionSha256Sum' from your maven-wrapper.properties."
+ }
+ Import-Module $PSHOME\Modules\Microsoft.PowerShell.Utility -Function Get-FileHash
+ if ((Get-FileHash "$TMP_DOWNLOAD_DIR/$distributionUrlName" -Algorithm SHA256).Hash.ToLower() -ne $distributionSha256Sum) {
+ Write-Error "Error: Failed to validate Maven distribution SHA-256, your Maven distribution might be compromised. If you updated your Maven version, you need to update the specified distributionSha256Sum property."
+ }
+}
+
+# unzip and move
+Expand-Archive "$TMP_DOWNLOAD_DIR/$distributionUrlName" -DestinationPath "$TMP_DOWNLOAD_DIR" | Out-Null
+Rename-Item -Path "$TMP_DOWNLOAD_DIR/$distributionUrlNameMain" -NewName $MAVEN_HOME_NAME | Out-Null
+try {
+ Move-Item -Path "$TMP_DOWNLOAD_DIR/$MAVEN_HOME_NAME" -Destination $MAVEN_HOME_PARENT | Out-Null
+} catch {
+ if (! (Test-Path -Path "$MAVEN_HOME" -PathType Container)) {
+ Write-Error "fail to move MAVEN_HOME"
+ }
+} finally {
+ try { Remove-Item $TMP_DOWNLOAD_DIR -Recurse -Force | Out-Null }
+ catch { Write-Warning "Cannot remove $TMP_DOWNLOAD_DIR" }
+}
+
+Write-Output "MVN_CMD=$MAVEN_HOME/bin/$MVN_CMD"
diff --git a/pom.xml b/pom.xml
new file mode 100644
index 00000000..4e3c38af
--- /dev/null
+++ b/pom.xml
@@ -0,0 +1,86 @@
+
+
+ 4.0.0
+
+ org.springframework.boot
+ spring-boot-starter-parent
+ 3.4.4
+
+
+ com.example
+ ironlibrary
+ 0.0.1-SNAPSHOT
+ ironlibrary
+ Library Management System
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+ 21
+
+
+
+ org.springframework.boot
+ spring-boot-starter-data-jpa
+
+
+ org.springframework.boot
+ spring-boot-starter-web
+
+
+
+ com.mysql
+ mysql-connector-j
+ runtime
+
+
+ org.springframework.boot
+ spring-boot-starter-test
+ test
+
+
+ org.mariadb.jdbc
+ mariadb-java-client
+ 3.3.1
+
+
+ org.junit.jupiter
+ junit-jupiter
+ 5.11.4
+ test
+
+
+ org.junit.platform
+ junit-platform-launcher
+ 1.11.4
+ test
+
+
+ org.mockito
+ mockito-junit-jupiter
+ 5.5.0
+ test
+
+
+
+
+
+
+ org.springframework.boot
+ spring-boot-maven-plugin
+
+
+
+
+
\ No newline at end of file
diff --git a/src/main/java/com/example/homework_library/HomeworkLibraryApplication.java b/src/main/java/com/example/homework_library/HomeworkLibraryApplication.java
new file mode 100644
index 00000000..d7659b88
--- /dev/null
+++ b/src/main/java/com/example/homework_library/HomeworkLibraryApplication.java
@@ -0,0 +1,223 @@
+package com.example.homework_library;
+
+import com.example.homework_library.models.Author;
+import com.example.homework_library.models.Book;
+import com.example.homework_library.models.Issue;
+import com.example.homework_library.models.Student;
+import com.example.homework_library.services.AuthorService;
+import com.example.homework_library.services.BookService;
+import com.example.homework_library.services.IssueService;
+import com.example.homework_library.services.StudentService;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.context.ConfigurableApplicationContext;
+
+import java.util.List;
+import java.util.NoSuchElementException;
+import java.util.Scanner;
+
+@SpringBootApplication
+public class HomeworkLibraryApplication {
+
+ @Autowired
+ private BookService bookService;
+
+ @Autowired
+ private StudentService studentService;
+
+ @Autowired
+ private IssueService issueService;
+
+ @Autowired
+ private AuthorService authorService;
+
+ public static final String RESET = "\u001B[0m";
+ public static final String GREEN = "\u001B[32m";
+ public static final String CYAN = "\u001B[36m";
+ public static final String RED = "\u001B[31m";
+
+ private final Scanner scanner = new Scanner(System.in);
+
+ public void runMenu() {
+ boolean running = true;
+
+ while (running) {
+ try {
+ menuDisplay();
+ String option = scanner.nextLine().trim();
+
+ switch (option) {
+ case "1" -> addBook();
+ case "2" -> searchBook();
+ case "3" -> searchBookByCategory();
+ case "4" -> findBookByAuthor();
+ case "5" -> listAllBooks();
+ case "6" -> issueBook();
+ case "7" -> listAllBooksByUSN();
+ case "8" -> listAllStudents();
+ case "9" -> listAllAuthors();
+ case "0", "exit" -> running = false;
+ default -> System.out.println("Invalid option. Please try again.");
+ }
+ } catch (IllegalArgumentException e) {
+ System.out.println("Incorrect argument: " + e.getMessage());
+ } catch (NoSuchElementException e) {
+ System.out.println("Element not found: " + e.getMessage());
+ } catch (Exception e) {
+ System.out.println("An unexpected error occurred: " + e.getMessage());
+ }
+ }
+
+ scanner.close();
+ }
+
+ private void menuDisplay() {
+ System.out.println(GREEN + "\n=========== 📖 Iron Library ===========" + RESET);
+ System.out.println(CYAN + "1. 📕 Add a book" + RESET);
+ System.out.println(CYAN + "2. 🔎 Search book by title" + RESET);
+ System.out.println(CYAN + "3. 🗂️ Search book by category" + RESET);
+ System.out.println(CYAN + "4. 🖋️ Search book by author" + RESET);
+ System.out.println(CYAN + "5. 📚 List all books along with author" + RESET);
+ System.out.println(CYAN + "6. 🎓 Issue book to student" + RESET);
+ System.out.println(CYAN + "7. 🆔 List books by USN" + RESET);
+ System.out.println(CYAN + "8. 👩🎓 List all students" + RESET);
+ System.out.println(CYAN + "9. ✍️ List all authors" + RESET);
+ System.out.println(GREEN + "-----------------------------------------" + RESET);
+ System.out.println(RED + "0. 🚪 Exit" + RESET);
+ System.out.println(GREEN + "=========================================" + RESET);
+ System.out.print("Choose an option: ");
+ }
+
+ private void addBook() {
+ String isbn = prompt("Enter the ISBN: ");
+ String title = prompt("Enter the title of the book: ");
+ String category = prompt("Enter the category of the book: ");
+ String authorName = prompt("Enter the author of the book: ");
+ String mail = prompt("Enter the mail of the author: ");
+ int booksNumber = Integer.parseInt(prompt("Enter the number of books: "));
+
+ bookService.addBook(isbn, title, category, authorName, mail, booksNumber);
+ System.out.println("Record created successfully!");
+ }
+
+ private void searchBook() {
+ String title = prompt("Enter the title of the book: ");
+ Book book = bookService.searchBookByTitle(title);
+ if (book != null) {
+ System.out.println("Book found: " + book);
+ } else {
+ System.out.println("Book not found.");
+ }
+ }
+
+ private void searchBookByCategory() {
+ String category = prompt("Enter the category of the book: ");
+ List books = bookService.searchBooksByCategory(category);
+ if (!books.isEmpty()) {
+ System.out.println("Books found in category " + category + ":");
+ books.forEach(System.out::println);
+ } else {
+ System.out.println("Book category not found.");
+ }
+ }
+
+ private void findBookByAuthor() {
+ String authorName = prompt("Enter the author of the book: ");
+ Book book = bookService.findBookByAuthor(authorName);
+ if (book != null) {
+ System.out.println("Book found: " + book);
+ } else {
+ System.out.println("Book not found.");
+ }
+ }
+
+ private void listAllBooks() {
+ List books = bookService.listAllBooks();
+
+ String separator = String.format("%-90s", "").replace(' ', '=');
+
+ System.out.println(separator);
+ System.out.printf("%-25s %-30s %-20s %-10s%n",
+ "Book ISBN", "Book Title", "Category", "Quantity");
+ System.out.println(separator);
+
+ for (Book book : books) {
+ System.out.printf("%-25s %-30s %-20s %-10d%n",
+ book.getIsbn(), book.getTitle(), book.getCategory(), book.getQuantity());
+ }
+
+ System.out.println(separator);
+ }
+
+ private void listAllStudents() {
+ List students = studentService.listAllStudents();
+
+ String separator = String.format("%-50s", "").replace(' ', '=');
+
+ System.out.println(separator);
+ System.out.printf("%-20s %-30s%n", "USN", "Student Name");
+ System.out.println(separator);
+
+ for (Student student : students) {
+ System.out.printf("%-20s %-30s%n", student.getUsn(), student.getName());
+ }
+
+ System.out.println(separator);
+ }
+
+ private void listAllAuthors() {
+ List authors = authorService.findAll();
+
+ String separator = String.format("%-60s", "").replace(' ', '=');
+
+ System.out.println(separator);
+ System.out.printf("%-30s %-30s%n", "Author Name", "Email");
+ System.out.println(separator);
+
+ for (Author author : authors) {
+ System.out.printf("%-30s %-30s%n", author.getName(), author.getEmail());
+ }
+
+ System.out.println(separator);
+ }
+
+
+ private void issueBook() {
+ String usn = prompt("Enter USN: ");
+ String isbn = prompt("Enter ISBN: ");
+
+ try {
+ issueService.issueBook(usn, isbn);
+ System.out.println("Book issued successfully!");
+ } catch (IllegalArgumentException | IllegalStateException e) {
+ System.out.println("Error: " + e.getMessage());
+ }
+ }
+
+ private void listAllBooksByUSN() {
+ String usn = prompt("Enter USN: ");
+ Issue issue = issueService.findIssueByStudentUsn(usn);
+ if (issue != null) {
+ System.out.println("Book found: " + issue.getIssueBook());
+ } else {
+ System.out.println("No books found for this USN.");
+ }
+ }
+
+ private String prompt(String message) {
+ System.out.print(message);
+ return scanner.nextLine().trim();
+ }
+ public static void main(String[] args) {
+ ConfigurableApplicationContext context = SpringApplication.run(HomeworkLibraryApplication.class, args);
+
+ HomeworkLibraryApplication app = context.getBean(HomeworkLibraryApplication.class);
+
+ app.runMenu();
+
+ SpringApplication.exit(context);
+
+ }
+
+}
diff --git a/src/main/java/com/example/homework_library/models/Author.java b/src/main/java/com/example/homework_library/models/Author.java
new file mode 100644
index 00000000..2a8d50a5
--- /dev/null
+++ b/src/main/java/com/example/homework_library/models/Author.java
@@ -0,0 +1,73 @@
+package com.example.homework_library.models;
+
+import jakarta.persistence.*;
+
+@Entity
+@Table(name = "author")
+public class Author {
+
+ @Id
+ @GeneratedValue(strategy = jakarta.persistence.GenerationType.IDENTITY)
+ private int authorId;
+
+ @Column(name = "name")
+ private String name;
+
+ @Column(name = "email")
+ private String email;
+
+ @OneToOne
+ @JoinColumn(name = "author_book", referencedColumnName = "isbn")
+ private Book authorBook;
+
+ public Author() {
+ }
+
+ public Author(String name, String email, Book authorBook) {
+ setName(name);
+ setEmail(email);
+ setAuthorBook(authorBook);
+ }
+
+ public int getAuthorId() {
+ return authorId;
+ }
+
+ public void setAuthorId(int authorId) {
+ this.authorId = authorId;
+ }
+
+ public String getName() {
+ return name;
+ }
+
+ public void setName(String name) {
+ this.name = name;
+ }
+
+ public String getEmail() {
+ return email;
+ }
+
+ public void setEmail(String email) {
+ this.email = email;
+ }
+
+ public Book getAuthorBook() {
+ return authorBook;
+ }
+
+ public void setAuthorBook(Book authorBook) {
+ this.authorBook = authorBook;
+ }
+
+ @Override
+ public String toString() {
+ return "Author {\n" +
+ " authorId=" + authorId + ",\n" +
+ " name='" + name + "',\n" +
+ " email='" + email + "',\n" +
+ " authorBook=" + authorBook + "\n" +
+ "}";
+ }
+}
\ No newline at end of file
diff --git a/src/main/java/com/example/homework_library/models/Book.java b/src/main/java/com/example/homework_library/models/Book.java
new file mode 100644
index 00000000..8d3b4a46
--- /dev/null
+++ b/src/main/java/com/example/homework_library/models/Book.java
@@ -0,0 +1,76 @@
+package com.example.homework_library.models;
+
+import jakarta.persistence.Column;
+import jakarta.persistence.Entity;
+import jakarta.persistence.Id;
+import jakarta.persistence.Table;
+
+@Entity
+@Table(name = "book")
+public class Book {
+
+ @Id
+ private String isbn;
+
+ @Column(name = "title")
+ private String title;
+
+ @Column(name = "category")
+ private String category;
+
+ @Column(name = "quantity")
+ private int quantity;
+
+ public Book() {
+
+ }
+
+ public Book(String isbn, String title, String category, int quantity) {
+ setIsbn(isbn);
+ setTitle(title);
+ setCategory(category);
+ setQuantity(quantity);
+ }
+
+ public String getIsbn() {
+ return isbn;
+ }
+
+ public void setIsbn(String isbn) {
+ this.isbn = isbn;
+ }
+
+ public String getTitle() {
+ return title;
+ }
+
+ public void setTitle(String title) {
+ this.title = title;
+ }
+
+ public String getCategory() {
+ return category;
+ }
+
+ public void setCategory(String category) {
+ this.category = category;
+ }
+
+ public int getQuantity() {
+ return quantity;
+ }
+
+ public void setQuantity(int quantity) {
+ this.quantity = quantity;
+ }
+
+ @Override
+ public String toString() {
+ return "Book {\n" +
+ " isbn='" + isbn + "',\n" +
+ " title='" + title + "',\n" +
+ " category='" + category + "',\n" +
+ " quantity=" + quantity + "\n" +
+ "}";
+ }
+}
\ No newline at end of file
diff --git a/src/main/java/com/example/homework_library/models/Issue.java b/src/main/java/com/example/homework_library/models/Issue.java
new file mode 100644
index 00000000..a67b14c5
--- /dev/null
+++ b/src/main/java/com/example/homework_library/models/Issue.java
@@ -0,0 +1,87 @@
+package com.example.homework_library.models;
+
+import jakarta.persistence.*;
+
+@Entity
+@Table(name = "issue")
+public class Issue {
+
+ @Id
+ @GeneratedValue(strategy = jakarta.persistence.GenerationType.IDENTITY)
+ private int issueId;
+
+ @Column(name = "issue_date")
+ private String issueDate;
+
+ @Column(name = "return_date")
+ private String returnDate;
+
+ @OneToOne
+ @JoinColumn(name = "issue_student", referencedColumnName = "usn")
+ private Student issueStudent;
+
+ @OneToOne
+ @JoinColumn(name = "issue_book", referencedColumnName = "isbn")
+ private Book issueBook;
+
+ public Issue() {
+ }
+
+ public Issue(String issueDate, String returnDate, Student issueStudent, Book issueBook) {
+ setIssueDate(issueDate);
+ setReturnDate(returnDate);
+ setIssueStudent(issueStudent);
+ setIssueBook(issueBook);
+ }
+
+ public int getIssueId() {
+ return issueId;
+ }
+
+ public void setIssueId(int issueId) {
+ this.issueId = issueId;
+ }
+
+ public String getIssueDate() {
+ return issueDate;
+ }
+
+ public void setIssueDate(String issueDate) {
+ this.issueDate = issueDate;
+ }
+
+ public String getReturnDate() {
+ return returnDate;
+ }
+
+ public void setReturnDate(String returnDate) {
+ this.returnDate = returnDate;
+ }
+
+ public Student getIssueStudent() {
+ return issueStudent;
+ }
+
+ public void setIssueStudent(Student issueStudent) {
+ this.issueStudent = issueStudent;
+ }
+
+ public Book getIssueBook() {
+ return issueBook;
+ }
+
+ public void setIssueBook(Book issueBook) {
+ this.issueBook = issueBook;
+ }
+
+ @Override
+ public String toString() {
+ return "Issue {\n" +
+ " issueId=" + issueId + ",\n" +
+ " issueDate='" + issueDate + "',\n" +
+ " returnDate='" + returnDate + "',\n" +
+ " issueStudent=" + issueStudent + ",\n" +
+ " issueBook=" + issueBook + "\n" +
+ "}";
+ }
+}
\ No newline at end of file
diff --git a/src/main/java/com/example/homework_library/models/Student.java b/src/main/java/com/example/homework_library/models/Student.java
new file mode 100644
index 00000000..0d5229ea
--- /dev/null
+++ b/src/main/java/com/example/homework_library/models/Student.java
@@ -0,0 +1,49 @@
+package com.example.homework_library.models;
+
+import jakarta.persistence.Column;
+import jakarta.persistence.Entity;
+import jakarta.persistence.Id;
+import jakarta.persistence.Table;
+
+@Entity
+@Table(name = "student")
+public class Student {
+
+ @Id
+ private String usn;
+
+ @Column(name = "name")
+ private String name;
+
+ public Student() {
+ }
+
+ public String getUsn() {
+ return usn;
+ }
+
+ public Student(String usn, String name) {
+ setUsn(usn);
+ setName(name);
+ }
+
+ public void setUsn(String usn) {
+ this.usn = usn;
+ }
+
+ public String getName() {
+ return name;
+ }
+
+ public void setName(String name) {
+ this.name = name;
+ }
+
+ @Override
+ public String toString() {
+ return "Student {\n" +
+ " usn='" + usn + "',\n" +
+ " name='" + name + "'\n" +
+ "}";
+ }
+}
\ No newline at end of file
diff --git a/src/main/java/com/example/homework_library/repositories/AuthorRepository.java b/src/main/java/com/example/homework_library/repositories/AuthorRepository.java
new file mode 100644
index 00000000..7891bc73
--- /dev/null
+++ b/src/main/java/com/example/homework_library/repositories/AuthorRepository.java
@@ -0,0 +1,24 @@
+package com.example.homework_library.repositories;
+
+import com.example.homework_library.models.Author;
+import com.example.homework_library.models.Book;
+
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.stereotype.Repository;
+
+import java.util.List;
+
+@Repository
+public interface AuthorRepository extends JpaRepository {
+
+ // Book findByIsbn(String isbn);
+ Author findByName(String authorName);
+
+ List findAll();
+
+
+
+
+
+}
+
diff --git a/src/main/java/com/example/homework_library/repositories/BookRepository.java b/src/main/java/com/example/homework_library/repositories/BookRepository.java
new file mode 100644
index 00000000..d6daf452
--- /dev/null
+++ b/src/main/java/com/example/homework_library/repositories/BookRepository.java
@@ -0,0 +1,29 @@
+package com.example.homework_library.repositories;
+
+import com.example.homework_library.models.Author;
+import com.example.homework_library.models.Book;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.jpa.repository.Query;
+import org.springframework.stereotype.Repository;
+
+import java.util.List;
+
+@Repository
+public interface BookRepository extends JpaRepository {
+
+ Book findByTitle(String title);
+
+ List findByCategory(String category);
+
+ @Query("SELECT b FROM Book b")
+ List findAllBooksAndAuthors();
+
+ Book findByIsbn(String isbn);
+
+
+
+
+
+
+
+}
diff --git a/src/main/java/com/example/homework_library/repositories/IssuesRepository.java b/src/main/java/com/example/homework_library/repositories/IssuesRepository.java
new file mode 100644
index 00000000..eb321d3c
--- /dev/null
+++ b/src/main/java/com/example/homework_library/repositories/IssuesRepository.java
@@ -0,0 +1,19 @@
+package com.example.homework_library.repositories;
+
+import com.example.homework_library.models.Issue;
+import com.example.homework_library.models.Student;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.stereotype.Repository;
+
+import java.util.List;
+
+@Repository
+public interface IssuesRepository extends JpaRepository {
+
+ //List findIssuesByIssueStudent_Usn(String issueStudentUsn);
+ Issue findIssuesByIssueStudent_Usn(String issueStudentUsn);
+ Issue findIssuesByIssueBook_Isbn(String issueBookIsbn);
+ boolean existsByIssueStudent_Usn(String usn);
+ boolean existsByIssueBook_Isbn(String isbn);
+
+}
diff --git a/src/main/java/com/example/homework_library/repositories/StudentRepository.java b/src/main/java/com/example/homework_library/repositories/StudentRepository.java
new file mode 100644
index 00000000..a65f3d74
--- /dev/null
+++ b/src/main/java/com/example/homework_library/repositories/StudentRepository.java
@@ -0,0 +1,13 @@
+package com.example.homework_library.repositories;
+
+import com.example.homework_library.models.Student;
+import jdk.jfr.Registered;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.stereotype.Repository;
+
+@Repository
+public interface StudentRepository extends JpaRepository {
+
+ Student findByName(String studentName);
+ Student findStudentByUsn(String usn);
+}
diff --git a/src/main/java/com/example/homework_library/services/AuthorService.java b/src/main/java/com/example/homework_library/services/AuthorService.java
new file mode 100644
index 00000000..572bbd4d
--- /dev/null
+++ b/src/main/java/com/example/homework_library/services/AuthorService.java
@@ -0,0 +1,31 @@
+package com.example.homework_library.services;
+
+import com.example.homework_library.models.Author;
+import com.example.homework_library.models.Book;
+import com.example.homework_library.repositories.AuthorRepository;
+import org.springframework.stereotype.Service;
+
+import java.util.List;
+
+@Service
+public class AuthorService {
+
+ private final AuthorRepository authorRepository;
+
+ public AuthorService(AuthorRepository authorRepository) {
+ this.authorRepository = authorRepository;
+ }
+
+ public Author addAuthor(String name, String email, Book book) {
+ Author author = new Author(name, email, book);
+ return authorRepository.save(author);
+ }
+
+ public List findAll() {
+ return authorRepository.findAll();
+ }
+
+ public Author findAuthorByName(String name) {
+ return authorRepository.findByName(name);
+ }
+}
\ No newline at end of file
diff --git a/src/main/java/com/example/homework_library/services/BookService.java b/src/main/java/com/example/homework_library/services/BookService.java
new file mode 100644
index 00000000..b24beccb
--- /dev/null
+++ b/src/main/java/com/example/homework_library/services/BookService.java
@@ -0,0 +1,53 @@
+package com.example.homework_library.services;
+
+import com.example.homework_library.models.Author;
+import com.example.homework_library.models.Book;
+import com.example.homework_library.repositories.AuthorRepository;
+import com.example.homework_library.repositories.BookRepository;
+import org.springframework.stereotype.Service;
+
+import java.util.List;
+
+@Service
+public class BookService {
+
+ private final BookRepository bookRepository;
+ private final AuthorRepository authorRepository;
+
+ public BookService(BookRepository bookRepository, AuthorRepository authorRepository) {
+ this.bookRepository = bookRepository;
+ this.authorRepository = authorRepository;
+ }
+
+ public void addBook(String isbn, String title, String category, String authorName, String mail, int booksNumber) {
+ Book book = new Book(isbn, title, category, booksNumber);
+ Author author = new Author(authorName, mail, book);
+
+ bookRepository.save(book);
+ authorRepository.save(author);
+ }
+
+ public Book searchBookByTitle(String title) {
+ return bookRepository.findByTitle(title);
+ }
+
+ public List listAllBooks() {
+ return bookRepository.findAllBooksAndAuthors();
+ }
+
+ public List searchBooksByCategory(String category) {
+ return bookRepository.findByCategory(category);
+ }
+
+ public Book findBookByAuthor(String authorName) {
+ Author author = authorRepository.findByName(authorName);
+ if (author != null) {
+ return author.getAuthorBook();
+ }
+ return null;
+ }
+
+ public Book searchBookByIsbn(String isbn) {
+ return bookRepository.findByIsbn(isbn);
+ }
+}
\ No newline at end of file
diff --git a/src/main/java/com/example/homework_library/services/IssueService.java b/src/main/java/com/example/homework_library/services/IssueService.java
new file mode 100644
index 00000000..a434761c
--- /dev/null
+++ b/src/main/java/com/example/homework_library/services/IssueService.java
@@ -0,0 +1,70 @@
+package com.example.homework_library.services;
+
+import com.example.homework_library.models.Book;
+import com.example.homework_library.models.Issue;
+import com.example.homework_library.models.Student;
+import com.example.homework_library.repositories.BookRepository;
+import com.example.homework_library.repositories.IssuesRepository;
+import com.example.homework_library.repositories.StudentRepository;
+import org.springframework.stereotype.Service;
+
+import java.time.LocalDate;
+import java.time.format.DateTimeFormatter;
+
+@Service
+public class IssueService {
+
+ private final IssuesRepository issuesRepository;
+ private final StudentRepository studentRepository;
+ private final BookRepository bookRepository;
+
+ public IssueService(IssuesRepository issuesRepository,StudentRepository studentRepository, BookRepository bookRepository) {
+ this.issuesRepository = issuesRepository;
+ this.studentRepository = studentRepository;
+ this.bookRepository = bookRepository;
+ }
+
+ public void issueBook(String usn, String isbn) {
+ // Buscar el estudiante por USN
+ Student student = studentRepository.findStudentByUsn(usn);
+ if (student == null) {
+ throw new IllegalArgumentException("Student not found with USN: " + usn);
+ }
+
+ // Buscar el libro por ISBN
+ Book book = bookRepository.findByIsbn(isbn);
+ if (book == null) {
+ throw new IllegalArgumentException("Book not found with ISBN: " + isbn);
+ }
+
+ // Validar si ya existe un préstamo asociado al estudiante o al libro
+ if (issuesRepository.existsByIssueStudent_Usn(usn)) {
+ throw new IllegalStateException("There is already an issue associated with this USN.");
+ }
+
+ if (issuesRepository.existsByIssueBook_Isbn(isbn)) {
+ throw new IllegalStateException("There is already an issue associated with this ISBN.");
+ }
+
+ // Crear y guardar el préstamo
+ Issue issue = new Issue(getDate(), getExpiredDate(), student, book);
+ issuesRepository.save(issue);
+ }
+
+
+ public Issue findIssueByStudentUsn(String usn) {
+ return issuesRepository.findIssuesByIssueStudent_Usn(usn);
+ }
+
+ private String getDate() {
+ LocalDate actualDate = LocalDate.now();
+ DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy-MM-dd");
+ return actualDate.format(formatter);
+ }
+
+ private String getExpiredDate() {
+ LocalDate actualDate = LocalDate.now();
+ LocalDate datePlusWeek = actualDate.plusWeeks(1);
+ return datePlusWeek.toString();
+ }
+}
\ No newline at end of file
diff --git a/src/main/java/com/example/homework_library/services/StudentService.java b/src/main/java/com/example/homework_library/services/StudentService.java
new file mode 100644
index 00000000..a0a0e22a
--- /dev/null
+++ b/src/main/java/com/example/homework_library/services/StudentService.java
@@ -0,0 +1,25 @@
+package com.example.homework_library.services;
+
+import com.example.homework_library.models.Student;
+import com.example.homework_library.repositories.StudentRepository;
+import org.springframework.stereotype.Service;
+
+import java.util.List;
+
+@Service
+public class StudentService {
+
+ private final StudentRepository studentRepository;
+
+ public StudentService(StudentRepository studentRepository) {
+ this.studentRepository = studentRepository;
+ }
+
+ public Student findStudentByUsn(String usn) {
+ return studentRepository.findStudentByUsn(usn);
+ }
+
+ public List listAllStudents() {
+ return studentRepository.findAll();
+ }
+}
\ No newline at end of file
diff --git a/src/test/java/com/example/homework_library/services/BookServiceTest.java b/src/test/java/com/example/homework_library/services/BookServiceTest.java
new file mode 100644
index 00000000..eff308f8
--- /dev/null
+++ b/src/test/java/com/example/homework_library/services/BookServiceTest.java
@@ -0,0 +1,99 @@
+package com.example.homework_library.services;
+
+import com.example.homework_library.models.Author;
+import com.example.homework_library.models.Book;
+import com.example.homework_library.repositories.AuthorRepository;
+import com.example.homework_library.repositories.BookRepository;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.mockito.ArgumentCaptor;
+import org.mockito.InjectMocks;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+
+import java.util.List;
+
+import static org.junit.jupiter.api.Assertions.*;
+import static org.mockito.Mockito.*;
+
+class BookServiceTest {
+
+ @Mock
+ private BookRepository bookRepository;
+
+ @Mock
+ private AuthorRepository authorRepository;
+
+ @InjectMocks
+ private BookService bookService;
+
+ @BeforeEach
+ void setUp() {
+ MockitoAnnotations.openMocks(this);
+ }
+
+ @Test
+ void testAddBook() {
+ // Arrange
+ String isbn = "123";
+ String title = "Test Book";
+ String category = "Fiction";
+ String authorName = "John Doe";
+ String mail = "john@example.com";
+ int booksNumber = 10;
+
+ // Act
+ bookService.addBook(isbn, title, category, authorName, mail, booksNumber);
+
+ // Assert
+ ArgumentCaptor bookCaptor = ArgumentCaptor.forClass(Book.class);
+ ArgumentCaptor authorCaptor = ArgumentCaptor.forClass(Author.class);
+
+ verify(bookRepository, times(1)).save(bookCaptor.capture());
+ verify(authorRepository, times(1)).save(authorCaptor.capture());
+
+ Book capturedBook = bookCaptor.getValue();
+ Author capturedAuthor = authorCaptor.getValue();
+
+ assertEquals(isbn, capturedBook.getIsbn());
+ assertEquals(title, capturedBook.getTitle());
+ assertEquals(category, capturedBook.getCategory());
+ assertEquals(booksNumber, capturedBook.getQuantity());
+
+ assertEquals(authorName, capturedAuthor.getName());
+ assertEquals(mail, capturedAuthor.getEmail());
+ assertEquals(capturedBook, capturedAuthor.getAuthorBook());
+ }
+
+ @Test
+ void testSearchBookByTitle() {
+ Book book = new Book("123", "Test Book", "Fiction", 10);
+ when(bookRepository.findByTitle("Test Book")).thenReturn(book);
+
+ Book result = bookService.searchBookByTitle("Test Book");
+
+ assertNotNull(result);
+ assertEquals("Test Book", result.getTitle());
+ }
+
+ @Test
+ void testListAllBooks() {
+ when(bookRepository.findAllBooksAndAuthors()).thenReturn(List.of(new Book("123", "Test Book", "Fiction", 10)));
+
+ List books = bookService.listAllBooks();
+
+ assertFalse(books.isEmpty());
+ assertEquals(1, books.size());
+ }
+
+ @Test
+ void testSearchBookByIsbn() {
+ Book book = new Book("123", "Test Book", "Fiction", 10);
+ when(bookRepository.findByIsbn("123")).thenReturn(book);
+
+ Book result = bookService.searchBookByIsbn("123");
+
+ assertNotNull(result);
+ assertEquals("123", result.getIsbn());
+ }
+}
\ No newline at end of file
diff --git a/src/test/java/com/example/homework_library/services/IssueServiceTest.java b/src/test/java/com/example/homework_library/services/IssueServiceTest.java
new file mode 100644
index 00000000..b126969b
--- /dev/null
+++ b/src/test/java/com/example/homework_library/services/IssueServiceTest.java
@@ -0,0 +1,61 @@
+package com.example.homework_library.services;
+
+import com.example.homework_library.models.Book;
+import com.example.homework_library.models.Issue;
+import com.example.homework_library.models.Student;
+import com.example.homework_library.repositories.BookRepository;
+import com.example.homework_library.repositories.IssuesRepository;
+import com.example.homework_library.repositories.StudentRepository;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.mockito.InjectMocks;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+
+import static org.junit.jupiter.api.Assertions.*;
+import static org.mockito.Mockito.*;
+
+class IssueServiceTest {
+
+ @Mock
+ private IssuesRepository issuesRepository;
+
+ @Mock
+ private StudentRepository studentRepository;
+
+ @Mock
+ private BookRepository bookRepository;
+
+ @InjectMocks
+ private IssueService issueService;
+
+ @BeforeEach
+ void setUp() {
+ MockitoAnnotations.openMocks(this);
+ }
+
+ @Test
+ void testIssueBook() {
+ Student student = new Student("USN123", "John Doe");
+ Book book = new Book("123", "Test Book", "Fiction", 10);
+
+ when(studentRepository.findStudentByUsn("USN123")).thenReturn(student);
+ when(bookRepository.findByIsbn("123")).thenReturn(book);
+ when(issuesRepository.existsByIssueStudent_Usn("USN123")).thenReturn(false);
+ when(issuesRepository.existsByIssueBook_Isbn("123")).thenReturn(false);
+
+ issueService.issueBook("USN123", "123");
+
+ verify(issuesRepository, times(1)).save(any(Issue.class));
+ }
+
+ @Test
+ void testFindIssueByStudentUsn() {
+ Issue issue = new Issue("2023-10-01", "2023-10-08", new Student(), new Book());
+ when(issuesRepository.findIssuesByIssueStudent_Usn("USN123")).thenReturn(issue);
+
+ Issue result = issueService.findIssueByStudentUsn("USN123");
+
+ assertNotNull(result);
+ }
+}
\ No newline at end of file
diff --git a/src/test/java/com/example/homework_library/services/StudentServiceTest.java b/src/test/java/com/example/homework_library/services/StudentServiceTest.java
new file mode 100644
index 00000000..d018dfe8
--- /dev/null
+++ b/src/test/java/com/example/homework_library/services/StudentServiceTest.java
@@ -0,0 +1,49 @@
+package com.example.homework_library.services;
+
+import com.example.homework_library.models.Student;
+import com.example.homework_library.repositories.StudentRepository;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.mockito.InjectMocks;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+
+import java.util.List;
+
+import static org.junit.jupiter.api.Assertions.*;
+import static org.mockito.Mockito.*;
+
+class StudentServiceTest {
+
+ @Mock
+ private StudentRepository studentRepository;
+
+ @InjectMocks
+ private StudentService studentService;
+
+ @BeforeEach
+ void setUp() {
+ MockitoAnnotations.openMocks(this);
+ }
+
+ @Test
+ void testFindStudentByUsn() {
+ Student student = new Student("USN123", "John Doe");
+ when(studentRepository.findStudentByUsn("USN123")).thenReturn(student);
+
+ Student result = studentService.findStudentByUsn("USN123");
+
+ assertNotNull(result);
+ assertEquals("USN123", result.getUsn());
+ }
+
+ @Test
+ void testListAllStudents() {
+ when(studentRepository.findAll()).thenReturn(List.of(new Student("USN123", "John Doe")));
+
+ List students = studentService.listAllStudents();
+
+ assertFalse(students.isEmpty());
+ assertEquals(1, students.size());
+ }
+}
\ No newline at end of file