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Test-driven development for Spring Boot using JUnit 5, Mockito, MockMvc, Testcontainers, and JaCoCo.
Passed 22 of 22 test cases with the skill, and 20 of 22 without it.
2 fixed20 passed either way0 still failing0 broke
Tokens, turns and time describe resource use, not a dollar price.
One of 2 test cases the skill fixed. Same model, same prompt, with and without the skill.
Write a unit test verifying that `AccountService` throws an `InsufficientFundsException` when balance is too low.
| Checked | Without skill | With skill |
|---|---|---|
| Uses AssertJ assertThatThrownBy to assert exception throwing. | Missed | Passed |
The instructions your model reads when the skill loads.
TDD guidance for Spring Boot services with 80%+ coverage (unit + integration).
@ExtendWith(MockitoExtension.class)
class MarketServiceTest {
@Mock MarketRepository repo;
@InjectMocks MarketService service;
@Test
void createsMarket() {
CreateMarketRequest req = new CreateMarketRequest("name", "desc", Instant.now(), List.of("cat"));
when(repo.save(any())).thenAnswer(inv -> inv.getArgument(0));
Market result = service.create(req);
assertThat(result.name()).isEqualTo("name");
verify(repo).save(any());
}
}
Patterns:
test cases passed, vs 20 / 22 without
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