setup tests for HelloWorldService

2025-12-05 18:04:38 +01:00
parent 290131269e
commit c5c602d599
8 changed files with 625 additions and 3 deletions
--- a/TEST_GUIDE.md
+++ b/TEST_GUIDE.md
@ -0,0 +1,346 @@
+# Unit Testing Guide
+
+This guide explains how to run and write unit tests for the JAX-WS Hello World Service project.
+
+## Quick Start
+
+### Run Tests with Docker (Recommended)
+
+#### Windows
+```cmd
+run-tests.bat
+```
+
+#### Linux/Mac
+```bash
+./run-tests.sh
+```
+
+### Run Tests with Maven (Local)
+
+If you have Maven installed locally:
+
+```bash
+mvn test
+```
+
+## Test Results Summary
+
+### Current Test Coverage
+
+| Service | Test Class | Test Cases | Status |
+|---------|-----------|------------|--------|
+| Hello World Service | HelloWorldServiceImplTest | 10 | ✅ Passing |
+
+### Test Case Details
+
+The `HelloWorldServiceImplTest` includes the following test cases:
+
+1. **testGetHelloWorld_WithValidName** - Verifies greeting with valid name
+2. **testGetHelloWorld_WithEmptyString** - Handles empty string input
+3. **testGetHelloWorld_WithNull** - Handles null input gracefully
+4. **testGetHelloWorld_WithSpecialCharacters** - Handles special characters
+5. **testGetHelloWorld_WithSpaces** - Handles names with spaces
+6. **testGetHelloWorld_WithLongName** - Handles long names
+7. **testGetHelloWorld_ReturnsNonNull** - Ensures non-null response
+8. **testGetHelloWorld_StartsWithHelloWorld** - Verifies message format
+9. **testGetHelloWorld_EndsWithExclamation** - Verifies message ending
+10. **testGetHelloWorld_ContainsName** - Verifies name inclusion
+
+## Docker Test Configuration
+
+### Test Architecture
+
+The project uses a multi-stage Dockerfile:
+
+- **Stage 1 (tester)**: Runs unit tests
+- **Stage 2 (builder)**: Builds the WAR file
+- **Stage 3**: Deploys to Tomcat
+
+### Test Docker Compose
+
+The `docker-compose.test.yml` file is configured to:
+- Target the `tester` stage of the Dockerfile
+- Mount source code for live testing
+- Cache Maven dependencies for faster subsequent runs
+- Set appropriate memory limits
+
+### Run Tests Manually
+
+```bash
+# Build and run tests
+docker-compose -f docker-compose.test.yml up --build
+
+# Clean up after tests
+docker-compose -f docker-compose.test.yml down
+```
+
+## Testing Framework
+
+### Dependencies
+
+The project uses:
+
+- **JUnit 5 (Jupiter)** - Testing framework
+  - `junit-jupiter-api:5.9.3` - Test annotations and assertions
+  - `junit-jupiter-engine:5.9.3` - Test execution engine
+
+- **Mockito** - Mocking framework (for future complex tests)
+  - `mockito-core:5.3.1` - Core mocking functionality
+  - `mockito-junit-jupiter:5.3.1` - JUnit 5 integration
+
+- **Maven Surefire** - Test runner plugin
+  - Configured to run all `*Test.java` files
+
+## Writing New Tests
+
+### Test Structure
+
+Tests follow the standard JUnit 5 structure:
+
+```java
+package com.example.service;
+
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.DisplayName;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+@DisplayName("Service Tests")
+class YourServiceTest {
+
+    private YourService service;
+
+    @BeforeEach
+    void setUp() {
+        service = new YourServiceImpl();
+    }
+
+    @Test
+    @DisplayName("Should do something")
+    void testSomething() {
+        // Arrange
+        String input = "test";
+        String expected = "expected result";
+
+        // Act
+        String result = service.doSomething(input);
+
+        // Assert
+        assertEquals(expected, result);
+    }
+}
+```
+
+### Test Best Practices
+
+1. **Use Descriptive Names**: Use `@DisplayName` for readable test descriptions
+2. **Follow AAA Pattern**: Arrange, Act, Assert
+3. **Test Edge Cases**: Include null, empty, and boundary conditions
+4. **Keep Tests Isolated**: Each test should be independent
+5. **Test One Thing**: Each test should verify one specific behavior
+
+### Adding Tests for New Services
+
+To add tests for other services (e.g., LoanApprovalService):
+
+1. Create test class in `src/test/java/com/example/service/`
+2. Follow the naming convention: `{ServiceName}Test.java`
+3. Run tests to verify
+
+Example structure for LoanApprovalService tests:
+
+```java
+package com.example.service;
+
+import com.example.model.*;
+import com.example.repository.*;
+import org.junit.jupiter.api.*;
+import org.mockito.*;
+
+import static org.junit.jupiter.api.Assertions.*;
+import static org.mockito.Mockito.*;
+
+@DisplayName("LoanApprovalService Tests")
+class LoanApprovalServiceTest {
+
+    @Mock
+    private CustomerRepository customerRepository;
+
+    @Mock
+    private CreditScoreService creditScoreService;
+
+    private LoanApprovalService service;
+
+    @BeforeEach
+    void setUp() {
+        MockitoAnnotations.openMocks(this);
+        service = new LoanApprovalService();
+        // Inject mocks if needed
+    }
+
+    @Test
+    @DisplayName("Should approve loan for high credit score")
+    void testLoanApproval_HighCreditScore() {
+        // Test implementation
+    }
+}
+```
+
+## Test Directory Structure
+
+```
+src/
+├── main/
+│   └── java/
+│       └── com/
+│           └── example/
+│               └── service/
+│                   ├── HelloWorldService.java
+│                   └── HelloWorldServiceImpl.java
+└── test/
+    └── java/
+        └── com/
+            └── example/
+                └── service/
+                    └── HelloWorldServiceImplTest.java
+```
+
+## Continuous Integration
+
+### Running Tests in CI/CD
+
+The Dockerfile includes testing as the first stage, which means:
+
+- Tests run automatically during Docker build
+- Build fails if tests fail
+- Ensures code quality before deployment
+
+To run tests in CI/CD pipelines:
+
+```bash
+# Option 1: Run full build (includes tests)
+docker build -t jaxws-app .
+
+# Option 2: Run tests only
+docker build --target tester -t jaxws-test .
+
+# Option 3: Use docker-compose
+docker-compose -f docker-compose.test.yml up --abort-on-container-exit
+```
+
+## Viewing Test Reports
+
+### Console Output
+
+Test results are displayed in the console with summary:
+
+```
+-------------------------------------------------------
+ T E S T S
+-------------------------------------------------------
+Running com.example.service.HelloWorldServiceImplTest
+Tests run: 10, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.024 s
+
+Results:
+
+Tests run: 10, Failures: 0, Errors: 0, Skipped: 0
+
+BUILD SUCCESS
+```
+
+### Surefire Reports
+
+Maven Surefire generates detailed reports in:
+- `target/surefire-reports/` (text and XML formats)
+
+## Troubleshooting
+
+### Tests Not Running
+
+**Problem**: Maven doesn't find tests
+
+**Solution**:
+- Ensure test files end with `Test.java`
+- Verify test directory structure: `src/test/java/`
+- Check pom.xml includes maven-surefire-plugin
+
+### Docker Build Fails on Tests
+
+**Problem**: Docker build fails at test stage
+
+**Solution**:
+```bash
+# View detailed test output
+docker build --target tester -t jaxws-test .
+
+# Check test container logs
+docker logs <container-id>
+```
+
+### Dependency Issues
+
+**Problem**: Cannot resolve JUnit dependencies
+
+**Solution**:
+```bash
+# Clear Maven cache and rebuild
+docker-compose -f docker-compose.test.yml build --no-cache
+```
+
+### Permission Denied on run-tests.sh
+
+**Problem**: Cannot execute run-tests.sh on Linux/Mac
+
+**Solution**:
+```bash
+chmod +x run-tests.sh
+./run-tests.sh
+```
+
+## Future Enhancements
+
+Consider adding tests for:
+
+1. **LoanApprovalService**
+   - Customer registration workflows
+   - Loan approval logic
+   - Credit score evaluation
+   - Blacklist handling
+
+2. **Repository Layer**
+   - Database operations
+   - CRUD functionality
+   - Error handling
+
+3. **Integration Tests**
+   - End-to-end SOAP request/response
+   - Database integration
+   - Multi-service workflows
+
+4. **Performance Tests**
+   - Load testing
+   - Stress testing
+   - Response time validation
+
+## Resources
+
+- [JUnit 5 User Guide](https://junit.org/junit5/docs/current/user-guide/)
+- [Mockito Documentation](https://javadoc.io/doc/org.mockito/mockito-core/latest/org/mockito/Mockito.html)
+- [Maven Surefire Plugin](https://maven.apache.org/surefire/maven-surefire-plugin/)
+- [Test-Driven Development Best Practices](https://martinfowler.com/bliki/TestDrivenDevelopment.html)
+
+## Summary
+
+This project now has a complete unit testing setup with:
+
+- ✅ JUnit 5 testing framework
+- ✅ 10 passing test cases for HelloWorldService
+- ✅ Docker-based test execution
+- ✅ Convenient test runner scripts
+- ✅ Multi-stage Dockerfile with test stage
+- ✅ Maven Surefire configuration
+- ✅ Mockito for future mocking needs
+
+To add more tests, simply create new test classes following the established patterns and run them using the provided scripts.