Add tests for product creation with validation and error handling

Author: harsh-skillup

src/main/java/com/productstore/service/controller/ProductController.java

@@ -36,13 +36,17 @@ public ResponseEntity<Product> createProduct(@Valid @RequestBody Product product
 
     // List all Products
 
+   
 
     // Read a Product
 
+    
 
     // Update a Product
 
+    
 
     // Delete a Product
+   
 
 }

src/test/java/com/productstore/service/controller/ProductControllerTest.java

@@ -52,6 +52,54 @@ private Product createProductFixture() {
         product.setCategory(Product.Category.CLOTHS);
         return product;
     }
+
+   
+
+    @Test
+    public void testCreateProduct() throws Exception {
+        // Create a product for testing
+        Product product = createProductFixture();
+        product.setId(null); // ID should be null for creation
+        
+        // Create the expected result (product with ID assigned)
+        Product createdProduct = createProductFixture();
+        createdProduct.setId(1L);
+        
+        // Mock service behavior
+        when(productService.create(any(Product.class))).thenReturn(createdProduct);
+        
+        // Make the request and validate
+        mockMvc.perform(post("/products")
+                .contentType(MediaType.APPLICATION_JSON)
+                .content(objectMapper.writeValueAsString(product)))
+                .andExpect(status().isCreated())
+                .andExpect(header().string("Location", containsString("/products/1")))
+                .andExpect(jsonPath("$.id").value(createdProduct.getId()))
+                .andExpect(jsonPath("$.name").value(createdProduct.getName()))
+                .andExpect(jsonPath("$.description").value(createdProduct.getDescription()))
+                .andExpect(jsonPath("$.price").value(createdProduct.getPrice().doubleValue()))
+                .andExpect(jsonPath("$.available").value(createdProduct.getAvailable()))
+                .andExpect(jsonPath("$.category").value(createdProduct.getCategory().toString()));
+                
+        verify(productService).create(any(Product.class));
+    }
+
+    @Test
+    public void testCreateProductWithValidationError() throws Exception {
+        // Create an invalid product (missing required fields)
+        Product invalidProduct = new Product();
+        // Name and description are required but not set
+        
+        // Make the request and validate
+        mockMvc.perform(post("/products")
+                .contentType(MediaType.APPLICATION_JSON)
+                .content(objectMapper.writeValueAsString(invalidProduct)))
+                .andExpect(status().isBadRequest());
+                
+        // Verify service was never called with invalid data
+        verify(productService, never()).create(any(Product.class));
+    }
+
 
 
 }