Add configuration options tests (uniqueFields and autoId)

Author: r-el

test/test-config-options.js

@@ -0,0 +1,147 @@
+import JsonFileCRUD from "../lib/json-file-crud.js";
+import fs from "fs";
+
+// Test setup
+let passed = 0;
+let total = 0;
+let completed = 0;
+
+function test(description, testFn) {
+  total++;
+  testFn((err, success) => {
+    completed++;
+    
+    if (err || !success) {
+      console.log(`✗ ${description}: ${err?.message || 'failed'}`);
+    } else {
+      console.log(`✓ ${description}`);
+      passed++;
+    }
+    
+    // Check if all async tests are done
+    if (completed === total) {
+      console.log(`\n${passed}/${total} tests passed`);
+      process.exit(passed === total ? 0 : 1);
+    }
+  });
+}
+
+function cleanupFile(filePath) {
+  if (fs.existsSync(filePath)) {
+    fs.unlinkSync(filePath);
+  }
+}
+
+// Test unique fields in create
+test('unique fields prevent duplicates in create', (done) => {
+  const testFile = "./test-unique-create.json";
+  cleanupFile(testFile);
+  
+  const crud = new JsonFileCRUD(testFile, { 
+    uniqueFields: ['email', 'username'] 
+  });
+  
+  crud.create({ name: "Ariel", email: "ariel@example.com", username: "ariel123" }, (err, item1) => {
+    if (err) {
+      cleanupFile(testFile);
+      return done(err);
+    }
+    
+    // Try to create another item with same email
+    crud.create({ name: "Yoni", email: "ariel@example.com", username: "yoni456" }, (err2, item2) => {
+      if (err2 && err2.message.includes("email")) {
+        // Try to create another item with same username
+        crud.create({ name: "Moshe", email: "moshe@example.com", username: "ariel123" }, (err3, item3) => {
+          cleanupFile(testFile);
+          if (err3 && err3.message.includes("username")) {
+            return done(null, true);
+          }
+          done(new Error(`should have failed for duplicate username, got: ${err3?.message || 'no error'}`));
+        });
+      } else {
+        cleanupFile(testFile);
+        done(new Error(`should have failed for duplicate email, got: ${err2?.message || 'no error'}`));
+      }
+    });
+  });
+});
+
+// Test unique fields in update
+test('unique fields prevent duplicates in update', (done) => {
+  const testFile = "./test-unique-update.json";
+  cleanupFile(testFile);
+  
+  const crud = new JsonFileCRUD(testFile, { 
+    uniqueFields: ['email', 'username'] 
+  });
+  
+  // First create two items
+  crud.create({ name: "UpdateUser1", email: "updateuser1@example.com", username: "updateuser1" }, (err, item1) => {
+    if (err) {
+      cleanupFile(testFile);
+      return done(err);
+    }
+    
+    crud.create({ name: "UpdateUser2", email: "updateuser2@example.com", username: "updateuser2" }, (err2, item2) => {
+      if (err2) {
+        cleanupFile(testFile);
+        return done(err2);
+      }
+      
+      // Try to update item2 with item1's email
+      crud.update(item2.id, { email: "updateuser1@example.com" }, (err3, updatedItem) => {
+        cleanupFile(testFile);
+        if (err3 && err3.message.includes("email")) {
+          return done(null, true);
+        }
+        done(new Error('should have failed for duplicate email in update'));
+      });
+    });
+  });
+});
+
+// Test autoId can be disabled
+test('autoId can be disabled', (done) => {
+  const testFile = "./test-auto-id-disabled.json";
+  cleanupFile(testFile);
+  
+  const crud = new JsonFileCRUD(testFile, { autoId: false });
+  
+  // Create item without ID (should work when autoId is disabled)
+  crud.create({ name: "NoAutoId" }, (err, item) => {
+    if (err) {
+      cleanupFile(testFile);
+      return done(err);
+    }
+    
+    // Should not have auto-generated ID
+    if (item.id === undefined) {
+      cleanupFile(testFile);
+      return done(null, true);
+    }
+    
+    cleanupFile(testFile);
+    done(new Error('should not have auto-generated ID when autoId is false'));
+  });
+});
+
+// Test autoId enabled (default)
+test('autoId works when enabled', (done) => {
+  const testFile = "./test-auto-id-enabled.json";
+  cleanupFile(testFile);
+  
+  const crud = new JsonFileCRUD(testFile, { autoId: true });
+  
+  // Create item without ID (should get auto-generated ID)
+  crud.create({ name: "WithAutoId" }, (err, item) => {
+    cleanupFile(testFile);
+    if (err) return done(err);
+    
+    // Should have auto-generated ID
+    if (item.id === 1) {
+      return done(null, true);
+    }
+    
+    done(new Error(`expected auto-generated ID of 1, got: ${item.id}`));
+  });
+});