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avoid-missing-test-files

added in: 1.11.0
warning
⚙️
Pro+

Configure a list of files that should have a corresponding test file.

This rule assumes your test folder structure matches your lib folder structure.

note

This rule requires configuration in order to highlight any issues.

warning

This rule relies on file system calls and can be slow on large number of files.

⚙️ Config​

Set patterns (default is empty, can contain a regular expression) to configure the list of paths the rule will apply to.

analysis_options.yaml
dart_code_metrics:
  rules:
    - avoid-missing-test-files:
        patterns:
          - all/my/*.models.dart
          - some/other/file.dart
warning

For Windows devices, ensure that the patterns config works with Windows path separators.

Example​

❌ Bad:

// package/lib/src/my_file.dart
// no test file // LINT: This file does not have a corresponding test file, but is expected to have one. Try adding a test file.

✅ Good:

// package/lib/src/my_file.dart
// package/test/src/my_file_test.dart