spring-tdd-mockito
TDD (Test-Driven Development) skill with Mockito for Spring Boot. Guides the Red-Green-Refactor cycle for writing tests first.
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- Repository
- sergueik/selenium_java
- Last source activity
- July 30, 2026 at 15:23
- Detected SKILL.md language
- English
- Stars
- 25
- Forks
- 14
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Source instructions · Read-only preview- name
- spring-tdd-mockito
- version
- 1.0.0
- description
- TDD (Test-Driven Development) skill with Mockito for Spring Boot. Guides the Red-Green-Refactor cycle for writing tests first.
- triggers
- ["write test","tdd","mockito","unit test","test first"]
# Spring Boot TDD with Mockito
## TDD Cycle: Red → Green → Refactor
```
┌─────────────────────────────────────────────────────────────┐
│ TDD WORKFLOW │
│ │
│ ┌───────┐ ┌───────┐ ┌──────────┐ │
│ │ RED │ ───→ │ GREEN │ ───→ │ REFACTOR │ ───┐ │
│ │ │ │ │ │ │ │ │
│ │ Write │ │ Write │ │ Improve │ │ │
│ │ Test │ │ Code │ │ Code │ │ │
│ └───────┘ └───────┘ └──────────┘ │ │
│ ↑ │ │
│ └──────────────────────────────────────────┘ │
└─────────────────────────────────────────────────────────────┘
```
## Mockito Annotations
| Annotation | Purpose |
|------------|---------|
| `@Mock` | Create mock object |
| `@InjectMocks` | Inject mocks into class under test |
| `@Spy` | Partial mock - real methods + mock behavior |
| `@Captor` | Capture arguments passed to mock |
| `@MockBean` | Mock bean in Spring context |
## Test Template
```java
@ExtendWith(MockitoExtension.class)
class ServiceTest {
@Mock
private Repository repository;
@InjectMocks
private Service service;
@Test
@DisplayName("Should do something when condition is met")
void shouldDoSomethingWhenConditionIsMet() {
// Given (Arrange)
when(repository.findById(1L)).thenReturn(Optional.of(entity));
// When (Act)
var result = service.doSomething(1L);
// Then (Assert)
assertThat(result).isNotNull();
verify(repository).findById(1L);
}
}
```
## Best Practices
1. **One assertion per test** - Focus on single behavior
2. **Descriptive test names** - Use `@DisplayName`
3. **AAA Pattern** - Arrange, Act, Assert
4. **Test behavior, not implementation**
5. **Fast tests** - Mock external dependencies
6. **Isolated tests** - No shared state
origin: https://github.com/majiayu000/claude-skill-registry/blob/main/skills/data/spring-tdd-mockito/SKILL.md
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