pkg/analysis_server/test/src/services/correction/fix/remove_unused_import_test.dart

// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.

import 'package:analysis_server/src/services/correction/fix.dart';
import 'package:analyzer/src/error/codes.dart';
import 'package:analyzer_plugin/utilities/fixes/fixes.dart';
import 'package:test_reflective_loader/test_reflective_loader.dart';

import 'fix_processor.dart';

main() {
  defineReflectiveSuite(() {
    defineReflectiveTests(RemoveUnusedImportTest);
  });
}

@reflectiveTest
class RemoveUnusedImportTest extends FixProcessorTest {
  @override
  FixKind get kind => DartFixKind.REMOVE_UNUSED_IMPORT;

  test_all_diverseImports() async {
    await resolveTestUnit('''
import 'dart:math';
import 'dart:math';
import 'dart:async';
main() {
}
''');
    await assertHasFixAllFix(HintCode.UNUSED_IMPORT, '''
main() {
}
''');
  }

  test_all_diverseImports2() async {
    await resolveTestUnit('''
import 'dart:async';
import 'dart:math' as math;
import 'dart:async';

var tau = math.pi * 2;

main() {
}
''');
    await assertHasFixAllFix(HintCode.UNUSED_IMPORT, '''
import 'dart:math' as math;

var tau = math.pi * 2;

main() {
}
''');
  }

  test_all_singleLine() async {
    await resolveTestUnit('''
import 'dart:math'; import 'dart:math'; import 'dart:math';
main() {
}
''');
    await assertHasFixAllFix(HintCode.UNUSED_IMPORT, '''
main() {
}
''');
  }

  test_anotherImportOnLine() async {
    await resolveTestUnit('''
import 'dart:math'; import 'dart:async';

main() {
  Future f;
  print(f);
}
''');
    await assertHasFix('''
import 'dart:async';

main() {
  Future f;
  print(f);
}
''');
  }

  test_duplicateImport() async {
    await resolveTestUnit('''
import 'dart:math';
import 'dart:math';

main() {
  print(min(0, 1));
}
''');
    await assertHasFix('''
import 'dart:math';

main() {
  print(min(0, 1));
}
''');
  }

  test_multipleOfSame_all() async {
    await resolveTestUnit('''
import 'dart:math';
import 'dart:math';
import 'dart:math';
main() {
}
''');
    await assertHasFixAllFix(HintCode.UNUSED_IMPORT, '''
main() {
}
''');
  }

  test_severalLines() async {
    await resolveTestUnit('''
import
  'dart:math';
main() {
}
''');
    await assertHasFix('''
main() {
}
''');
  }

  test_single() async {
    await resolveTestUnit('''
import 'dart:math';
main() {
}
''');
    await assertHasFix('''
main() {
}
''');
  }
}