Spring Test Generator

An AI-powered tool that automatically generates comprehensive unit tests for Spring Boot applications. Analyzes controller methods, service layers, and repository interfaces to create production-quality test cases.

Features

• Automatic test case generation for Spring controllers, services, and repositories
• Smart mock data generation based on entity structures
• Support for all HTTP methods (GET, POST, PUT, DELETE, PATCH)
• Customizable test templates and naming conventions
• Integration with Spring Boot test infrastructure
• JUnit 5 and AssertJ assertions
• Integration test generation for REST endpoints

Usage

<dependency>
    <groupId>com.github.tdilber</groupId>
    <artifactId>spring-test-generator</artifactId>
    <version>${version}</version>
    <scope>test</scope>
</dependency>

How It Works

1. Analysis Phase — Scans Spring Boot application structure, identifies beans, endpoints, and dependencies
2. Generation Phase — Creates parameterized test cases with realistic mock data
3. Validation Phase — Ensures generated tests compile and follow Spring testing best practices

Benefits

• Reduces test boilerplate by 70-80%
• Ensures consistent test coverage across all endpoints
• Helps maintain testing best practices in team environments
• Increases development productivity by eliminating repetitive test writing
• Integrates seamlessly with existing CI/CD pipelines

Example Generated Test

@SpringBootTest
@AutoMockBean
class UserControllerTest {
    
    @Autowired
    private MockMvc mockMvc;
    
    @Test
    void getUserById() throws Exception {
        User user = new User("John", "[email protected]");
        when(userService.findById(1L)).thenReturn(user);
        
        mockMvc.perform(get("/users/1"))
            .andExpect(status().isOk())
            .andExpect(jsonPath("$.name").value("John"));
    }
}