隨記

說明

New code must have at least 80% line coverage. The quality gate evaluates coverage on the diff, not the entire codebase.

This ensures new and modified code is tested without requiring 100% coverage on legacy code.

為什麼重要

  • Regression safety — untested code breaks silently
  • Refactoring confidence — tests act as a safety net for changes
  • Documentation — tests show how the code is meant to be used

Enforcement

Quality Gate: new_coverage >= 80%

正例

@SpringBootTest
class OrderServiceTest {

    @Test
    void shouldCreateOrder() {
        var service = new OrderService(mockRepo);
        var order = service.createOrder(new OrderRequest("item-1", 2));

        assertThat(order.getStatus()).isEqualTo(OrderStatus.CREATED);
        assertThat(order.getItems()).hasSize(1);
    }
}

反例

@SpringBootTest
class OrderServiceTest {

    @Test
    void shouldCreateOrder() {
        var service = new OrderService(mockRepo);
        service.createOrder(new OrderRequest("item-1", 2));
        // ❌ no assertions — test passes but proves nothing
    }
}