missing-test-assertion

added in: 1.6.0

warning

⚙️

Warns that there is no assertion in the test.

By default, the rule checks for expect, expectLater, all expectAsync... variants and fail in test and testWidgets methods.

⚙️ Config

Set include-assertions (default is none) to include additional assertions.

Set include-methods (default is none) to check additional test methods for missing assertions.

dart_code_metrics:
  ...
  rules:
    ...
    - missing-test-assertion:
        include-assertions:
          - verify
        include-methods:
          - customTest

Example

❌ Bad:

test('bad unit test', () {
    // Given
    final a = 1;
    final b = 2;

    // When
    final c = a + 1;
});

✅ Good:

test('good unit test', () {
    // Given
    final a = 1;
    final b = 2;

    // When
    final c = a + 1;

    // Then : actual assertion
    expect(b, c);
});