week2Exercises file is added!

Author: Fatemeh-sadat-Torabi

mandatory/week2Exercises.js

@@ -0,0 +1,207 @@
+
+/*
+Fizz-Buzz Game: write the program that prints the numbers from 20 to 35 and for 
+multiples of ‘3’ print “Fizz” instead of the number,
+and for the multiples of ‘5’ print “Buzz”,
+and for multiples of '5' and '3' print "FizzBuzz".
+//* this exercise is for practicing "Conditionals: if-without-else , for" and "Logical Operators" and also "Comparison : ==="!
+*/
+function fizzBuzz (number){
+    if (number % 3 === 0 && number % 5 === 0) return "FizzBuzz";
+    if (number % 3 === 0) return "Fizz";
+    if (number % 5 === 0) return "Buzz";
+    return number;
+  }
+  console.log(fizzBuzz(1));
+  console.log(fizzBuzz(3));
+  console.log(fizzBuzz(5));
+  console.log(fizzBuzz(15));
+  
+//   for (let i = 20 ; i<= 35 ; i++){
+//     console.log(fizzBuzz(i));
+//   }
+//   let j = 20;
+//   while(j<=35){
+//     console.log(fizzBuzz(j));
+//     j+=1;
+//   }
+  
+  /*
+  complete function to check if user is acceptable or not acceptable (+18 years old is acceptable!):
+  */ 
+  function isAcceptableUser(userAge,isLoggedIn){
+    let isAcceptable = userAge>18 && isLoggedIn;
+    return(isAcceptable);  
+  }
+  console.log(isAcceptableUser(21,true));
+  
+  /*
+  complete function to apply discount percent based on how much is totalPrice in user cart.
+  */
+ 
+  function applyDiscount(totalPrice){
+      let discountPercent;
+      if (totalPrice>200) {
+          discountPercent = 10;
+      }else{
+          discountPercent = 5;    
+      }
+      return (totalPrice-(totalPrice*discountPercent)/100);
+  }
+  applyDiscount(120);
+  applyDiscount(280);
+  
+  /*
+  complete function to print odd numbers between 1 to limitNumber with while loop:
+  */
+  function printOddNumbers(limit){
+    let i = 1;
+    while(i<=limit){
+        
+        if(i%2!==0){
+            console.log(i);
+        }
+        i+=1;
+    }
+  }
+  printOddNumbers(10);
+  
+  /*
+  complete buyTwoGetTheCheapestFree Function: if user buy two items, cheapest item will be free!
+  */
+  function buyTwoGetTheCheapestFree(price1,price2){
+    if (price1>price2) return price1;
+    return price2; 
+  }
+  buyTwoGetTheCheapestFree(700,500);
+  /*
+  a function that check if user selected a color apply that else apply default color:
+  */
+  function productColor(selectedColor){
+      
+    let defaulColor = "purple";
+    return selectedColor||defaulColor;
+  }
+  productColor("pink");
+  productColor();
+  
+  /*
+  complete function to print mood: happy/not happy.
+  */
+  function mood(isHappy) {
+    if (isHappy) {
+      return 'I am happy';
+    } else {
+      return 'I am not happy';
+    }
+  }
+  /*
+  complete function to determine if it is suitable for person to register based on his age!
+  */
+  function canRegister(age) {
+    if (age<12){
+      return "You Are Too Young To Register";
+    }
+    else if(age>12 && age<90){
+      return "You Can Register";
+    }
+    else{
+      return "You Don't Need To Register";
+    }
+  }
+  
+  function countReverse(num){
+    while(num>0){
+        console.log(num);
+        num = num-1;
+    }
+  }
+  countReverse(20);
+  
+   
+  
+  /* ======= TESTS - DO NOT MODIFY ===== */
+  
+  
+  test("FizzBuzz function return fizz or buzz or fizzbuzz or number ", () => {
+      expect(fizzBuzz(1)).toEqual(1);
+  });
+  test("FizzBuzz function return fizz or buzz or fizzbuzz or number ", () => {
+      expect(fizzBuzz(3)).toEqual("Fizz");
+  });
+  test("FizzBuzz function return fizz or buzz or fizzbuzz or number ", () => {
+      expect(fizzBuzz(5)).toEqual("Buzz");
+  });
+  test("FizzBuzz function return fizz or buzz or fizzbuzz or number ", () => {
+      expect(fizzBuzz(15)).toEqual("FizzBuzz");
+  });
+
+ test("isAcceptableUser function retern user is allowed or not", () => {
+      expect(isAcceptableUser(21,true)).toEqual(true,false);
+  });
+
+ test("applyDiscount function retern price after discount", () => {
+    expect(applyDiscount(120)).toEqual(114);
+  });
+ test("(applyDiscount function retern price after discount", () => {
+    expect(applyDiscount(280)).toEqual(252);
+  });
+
+function expectprintOddNumbersToLog(expectedValues) {
+    const consoleLogSpy = jest.spyOn(console, 'log');
+    printOddNumbers(10);
+    expect(consoleLogSpy).toBeCalledTimes(5);
+    expectedValues.forEach((value, i) => {
+      expect(consoleLogSpy).nthCalledWith(i+1, value);
+    });
+    consoleLogSpy.mockRestore();
+};
+
+ test("(buyTwoGetTheCheapestFree function retern maximum price to pay", () => {
+    expect(buyTwoGetTheCheapestFree(700,500)).toEqual(700);
+ });
+
+ test("productColor function retern user-selected color or default color", () => {
+      expect(productColor("pink")).toEqual("pink");
+  });
+ test("productColor function retern user-selected color or default color", () => {
+    expect(productColor()).toEqual("purple");
+});
+
+ test("mood function works for true", () => {
+    expect(mood(true)).toEqual("I am happy");
+  });
+  
+ test("mood function works for false", () => {
+    expect(mood(false)).toEqual("I am not happy");
+  });
+
+ test("(canRegister function retern if people can register or not", () => {
+    expect(canRegister(45)).toEqual("You Can Register");
+  });
+ test("(canRegister function retern if people can register or not", () => {
+    expect(canRegister(111)).toEqual("You Don't Need To Register");
+  });
+
+function expectcountReverseToLog(expectedValues) {
+    const consoleLogSpy = jest.spyOn(console, 'log');
+    countReverse(20);
+    expect(consoleLogSpy).toBeCalledTimes(20);
+    expectedValues.forEach((value, i) => {
+      expect(consoleLogSpy).nthCalledWith(i+1, value);
+    });
+    consoleLogSpy.mockRestore();
+};
+
+
+ 
+
+
+
+  
+
+  
+  
+  
+  
+