void _checkClassesToMockAreValid()

in lib/src/builder.dart [541:587]
44 lines of code
6 McCabe index (conditional complexity)

  void _checkClassesToMockAreValid() {
    final classesInEntryLib =
        _entryLib.topLevelElements.whereType<ClassElement>();
    final classNamesToMock = <String, _MockTarget>{};
    final uniqueNameSuggestion =
        "use the 'customMocks' argument in @GenerateMocks to specify a unique "
        'name';
    for (final mockTarget in _mockTargets) {
      final name = mockTarget.mockName;
      if (classNamesToMock.containsKey(name)) {
        final firstClass = classNamesToMock[name]!.classElement;
        final firstSource = firstClass.source.fullName;
        final secondSource = mockTarget.classElement.source.fullName;
        throw InvalidMockitoAnnotationException(
            'Mockito cannot generate two mocks with the same name: $name (for '
            '${firstClass.name} declared in $firstSource, and for '
            '${mockTarget.classElement.name} declared in $secondSource); '
            '$uniqueNameSuggestion.');
      }
      classNamesToMock[name] = mockTarget;
    }

    classNamesToMock.forEach((name, mockTarget) {
      var conflictingClass =
          classesInEntryLib.firstWhereOrNull((c) => c.name == name);
      if (conflictingClass != null) {
        throw InvalidMockitoAnnotationException(
            'Mockito cannot generate a mock with a name which conflicts with '
            'another class declared in this library: ${conflictingClass.name}; '
            '$uniqueNameSuggestion.');
      }

      var preexistingMock = classesInEntryLib.firstWhereOrNull((c) =>
          c.interfaces
              .map((type) => type.element)
              .contains(mockTarget.classElement) &&
          _isMockClass(c.supertype!));
      if (preexistingMock != null) {
        throw InvalidMockitoAnnotationException(
            'The GenerateMocks annotation contains a class which appears to '
            'already be mocked inline: ${preexistingMock.name}; '
            '$uniqueNameSuggestion.');
      }

      _checkMethodsToStubAreValid(mockTarget);
    });
  }