// Copyright (c) 2019, 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:analyzer/dart/analysis/analysis_context.dart';
import 'package:analyzer/dart/analysis/analysis_context_collection.dart';
import 'package:analyzer/src/dart/analysis/analysis_context_collection.dart';
import 'package:analyzer/src/dart/analysis/byte_store.dart';
import 'package:analyzer/src/services/available_declarations.dart';
import 'package:analyzer/src/test_utilities/mock_sdk.dart';
import 'package:analyzer/src/test_utilities/resource_provider_mixin.dart';
import 'package:meta/meta.dart';
import 'package:test/test.dart';
import 'package:test_reflective_loader/test_reflective_loader.dart';

main() {
  defineReflectiveSuite(() {
    defineReflectiveTests(AvailableDeclarationsTest);
    defineReflectiveTests(ChangeFileTest);
    defineReflectiveTests(DeclarationTest);
    defineReflectiveTests(ExportTest);
    defineReflectiveTests(GetLibrariesTest);
  });
}

class AbstractContextTest with ResourceProviderMixin {
  final byteStore = MemoryByteStore();

  AnalysisContextCollection analysisContextCollection;

  AnalysisContext testAnalysisContext;

  void addDotPackagesDependency(String path, String name, String rootPath) {
    var packagesFile = getFile(path);

    String packagesContent;
    try {
      packagesContent = packagesFile.readAsStringSync();
    } catch (_) {
      packagesContent = '';
    }

    // Ignore if there is already the same package dependency.
    if (packagesContent.contains('$name:file://')) {
      return;
    }

    rootPath = convertPath(rootPath);
    packagesContent += '$name:${toUri('$rootPath/lib')}\n';

    packagesFile.writeAsStringSync(packagesContent);

    createAnalysisContexts();
  }

  void addTestPackageDependency(String name, String rootPath) {
    addDotPackagesDependency('/home/test/.packages', name, rootPath);
  }

  /// Create all analysis contexts in `/home`.
  void createAnalysisContexts() {
    analysisContextCollection = AnalysisContextCollectionImpl(
      includedPaths: [convertPath('/home')],
      resourceProvider: resourceProvider,
      sdkPath: convertPath('/sdk'),
    );

    var testPath = convertPath('/home/test');
    testAnalysisContext = getContext(testPath);
  }

  /// Return the existing analysis context that should be used to analyze the
  /// given [path], or throw [StateError] if the [path] is not analyzed in any
  /// of the created analysis contexts.
  AnalysisContext getContext(String path) {
    path = convertPath(path);
    return analysisContextCollection.contextFor(path);
  }

  setUp() {
    new MockSdk(resourceProvider: resourceProvider);

    newFolder('/home/test');
    newFile('/home/test/.packages', content: '''
test:${toUri('/home/test/lib')}
''');

    createAnalysisContexts();
  }
}

@reflectiveTest
class AvailableDeclarationsTest extends _Base {
  test_changesStream_noDuplicates() async {
    newFile('/home/aaa/lib/a.dart', content: 'class A {}');

    newFile('/home/bbb/pubspec.yaml', content: r'''
dependencies:
  aaa: any
''');
    addDotPackagesDependency('/home/bbb/.packages', 'aaa', '/home/aaa');
    newFile('/home/bbb/lib/b.dart', content: 'class B {}');

    newFile('/home/ccc/pubspec.yaml', content: r'''
dependencies:
  aaa: any
''');
    addDotPackagesDependency('/home/ccc/.packages', 'aaa', '/home/aaa');
    newFile('/home/ccc/lib/c.dart', content: 'class C {}');

    createAnalysisContexts();

    var bPath = convertPath('/home/bbb');
    var cPath = convertPath('/home/ccc');

    var bAnalysisContext = analysisContextCollection.contextFor(bPath);
    var cAnalysisContext = analysisContextCollection.contextFor(cPath);

    tracker.addContext(bAnalysisContext);
    tracker.addContext(cAnalysisContext);
    await _doAllTrackerWork();

    var uniquePathSet = Set<String>();
    for (var change in changes) {
      for (var library in change.changed) {
        if (!uniquePathSet.add(library.path)) {
          fail('Not unique path: ${library.path}');
        }
      }
    }
  }

  test_discardContexts() async {
    newFile('/home/test/lib/test.dart', content: r'''
class A {}
''');

    // No libraries initially.
    expect(uriToLibrary, isEmpty);

    // Add the context, and discard everything immediately.
    tracker.addContext(testAnalysisContext);
    tracker.discardContexts();

    // There is no context.
    expect(tracker.getContext(testAnalysisContext), isNull);

    // There is no work to do.
    expect(tracker.hasWork, isFalse);
    await _doAllTrackerWork();

    // So, there are no new libraries.
    expect(uriToLibrary, isEmpty);
  }

  test_getContext() async {
    newFile('/home/test/lib/a.dart', content: r'''
class A {}
class B {}
''');
    var addContext = tracker.addContext(testAnalysisContext);
    expect(tracker.getContext(testAnalysisContext), same(addContext));
  }

  test_getLibrary() async {
    newFile('/home/test/lib/test.dart', content: r'''
class C {}
''');
    tracker.addContext(testAnalysisContext);

    await _doAllTrackerWork();

    var id = uriToLibrary['package:test/test.dart'].id;
    var library = tracker.getLibrary(id);
    expect(library.id, id);
    expect(library.uriStr, 'package:test/test.dart');
  }

  test_readByteStore() async {
    newFile('/home/test/lib/a.dart', content: r'''
class A {}
''');
    newFile('/home/test/lib/b.dart', content: r'''
class B {}
''');
    newFile('/home/test/lib/test.dart', content: r'''
export 'a.dart' show A;
part 'b.dart';
class C {}
enum E {v}
''');

    // The byte store is empty, fill it.
    tracker.addContext(testAnalysisContext);
    await _doAllTrackerWork();

    // Re-create tracker, will read from byte store.
    _createTracker();
    tracker.addContext(testAnalysisContext);
    await _doAllTrackerWork();

    _assertHasLibrary('package:test/test.dart', declarations: [
      _ExpectedDeclaration.class_('A'),
      _ExpectedDeclaration.class_('B'),
      _ExpectedDeclaration.class_('C'),
      _ExpectedDeclaration.enum_('E'),
      _ExpectedDeclaration.enumConstant('v', 'E'),
    ]);
  }

  static Future pumpEventQueue([int times = 5000]) {
    if (times == 0) return new Future.value();
    return new Future.delayed(Duration.zero, () => pumpEventQueue(times - 1));
  }
}

@reflectiveTest
class ChangeFileTest extends _Base {
  test_added_exported() async {
    var a = convertPath('/home/test/lib/a.dart');
    var b = convertPath('/home/test/lib/b.dart');
    var c = convertPath('/home/test/lib/c.dart');
    var d = convertPath('/home/test/lib/d.dart');

    newFile(a, content: r'''
export 'b.dart';
class A {}
''');
    newFile(b, content: r'''
export 'c.dart';
class B {}
''');
    newFile(d, content: r'''
class D {}
''');
    tracker.addContext(testAnalysisContext);

    await _doAllTrackerWork();
    _assertHasLibrary('package:test/a.dart', declarations: [
      _ExpectedDeclaration.class_('A'),
      _ExpectedDeclaration.class_('B'),
    ]);
    _assertHasLibrary('package:test/b.dart', declarations: [
      _ExpectedDeclaration.class_('B'),
    ]);
    _assertHasNoLibrary('package:test/c.dart');
    _assertHasLibrary('package:test/d.dart', declarations: [
      _ExpectedDeclaration.class_('D'),
    ]);

    newFile(c, content: r'''
class C {}
''');
    tracker.changeFile(c);
    await _doAllTrackerWork();

    _assertHasLibrary('package:test/a.dart', declarations: [
      _ExpectedDeclaration.class_('A'),
      _ExpectedDeclaration.class_('B'),
      _ExpectedDeclaration.class_('C'),
    ]);
    _assertHasLibrary('package:test/b.dart', declarations: [
      _ExpectedDeclaration.class_('B'),
      _ExpectedDeclaration.class_('C'),
    ]);
    _assertHasLibrary('package:test/c.dart', declarations: [
      _ExpectedDeclaration.class_('C'),
    ]);
    _assertHasLibrary('package:test/d.dart', declarations: [
      _ExpectedDeclaration.class_('D'),
    ]);
  }

  test_added_library() async {
    var a = convertPath('/home/test/lib/a.dart');
    var b = convertPath('/home/test/lib/b.dart');

    newFile(a, content: r'''
class A {}
''');
    var declarationsContext = tracker.addContext(testAnalysisContext);

    await _doAllTrackerWork();
    _assertHasLibrary('package:test/a.dart', declarations: [
      _ExpectedDeclaration.class_('A'),
    ]);
    _assertHasNoLibrary('package:test/b.dart');

    newFile(b, content: r'''
class B {}
''');
    tracker.changeFile(b);
    await _doAllTrackerWork();

    _assertHasLibrary('package:test/a.dart', declarations: [
      _ExpectedDeclaration.class_('A'),
    ]);
    _assertHasLibrary('package:test/b.dart', declarations: [
      _ExpectedDeclaration.class_('B'),
    ]);

    var librariesObject = declarationsContext.getLibraries(
      '/home/test/lib/test.dart',
    );
    expect(
      librariesObject.context.map((library) => library.uriStr).toSet(),
      containsAll(['package:test/a.dart', 'package:test/b.dart']),
    );
  }

  test_added_part() async {
    var a = convertPath('/home/test/lib/a.dart');
    var b = convertPath('/home/test/lib/b.dart');
    var c = convertPath('/home/test/lib/c.dart');

    newFile(a, content: r'''
part 'b.dart';
class A {}
''');
    newFile(c, content: r'''
class C {}
''');
    tracker.addContext(testAnalysisContext);

    await _doAllTrackerWork();
    _assertHasLibrary('package:test/a.dart', declarations: [
      _ExpectedDeclaration.class_('A'),
    ]);
    _assertHasNoLibrary('package:test/b.dart');
    _assertHasLibrary('package:test/c.dart', declarations: [
      _ExpectedDeclaration.class_('C'),
    ]);

    newFile(b, content: r'''
part of 'a.dart';
class B {}
''');
    tracker.changeFile(b);
    await _doAllTrackerWork();

    _assertHasLibrary('package:test/a.dart', declarations: [
      _ExpectedDeclaration.class_('A'),
      _ExpectedDeclaration.class_('B'),
    ]);
    _assertHasNoLibrary('package:test/b.dart');
    _assertHasLibrary('package:test/c.dart', declarations: [
      _ExpectedDeclaration.class_('C'),
    ]);
  }

  test_chooseContext_inAnalysisRoot() async {
    var homePath = convertPath('/home');
    var testPath = convertPath('/home/test');
    var filePath = convertPath('/home/test/lib/test.dart');

    var homeContext = analysisContextCollection.contextFor(homePath);
    var testContext = analysisContextCollection.contextFor(testPath);

    tracker.addContext(homeContext);
    tracker.addContext(testContext);
    await _doAllTrackerWork();

    newFile(filePath, content: 'class A {}');
    uriToLibrary.clear();
    tracker.changeFile(filePath);
    await _doAllTrackerWork();

    _assertDeclaration(
      _getLibrary('package:test/test.dart'),
      'A',
      DeclarationKind.CLASS,
      relevanceTags: ['package:test/test.dart::A'],
    );

    newFile(filePath, content: 'class B {}');
    uriToLibrary.clear();
    tracker.changeFile(filePath);
    await _doAllTrackerWork();

    _assertDeclaration(
      _getLibrary('package:test/test.dart'),
      'B',
      DeclarationKind.CLASS,
      relevanceTags: ['package:test/test.dart::B'],
    );
  }

  test_chooseContext_inPackage() async {
    var homePath = convertPath('/home');
    var testPath = convertPath('/home/test');
    var filePath = convertPath('/packages/aaa/lib/a.dart');

    newFile('/home/test/pubspec.yaml', content: r'''
name: test
dependencies:
  aaa: any
''');
    addTestPackageDependency('aaa', '/packages/aaa');

    var homeContext = analysisContextCollection.contextFor(homePath);
    var testContext = analysisContextCollection.contextFor(testPath);

    tracker.addContext(homeContext);
    tracker.addContext(testContext);
    await _doAllTrackerWork();

    newFile(filePath, content: 'class A {}');
    uriToLibrary.clear();
    tracker.changeFile(filePath);
    await _doAllTrackerWork();

    _assertDeclaration(
      _getLibrary('package:aaa/a.dart'),
      'A',
      DeclarationKind.CLASS,
      relevanceTags: ['package:aaa/a.dart::A'],
    );

    newFile(filePath, content: 'class B {}');
    uriToLibrary.clear();
    tracker.changeFile(filePath);
    await _doAllTrackerWork();

    _assertDeclaration(
      _getLibrary('package:aaa/a.dart'),
      'B',
      DeclarationKind.CLASS,
      relevanceTags: ['package:aaa/a.dart::B'],
    );
  }

  test_chooseContext_inSdk() async {
    var filePath = convertPath('/sdk/lib/math/math.dart');

    tracker.addContext(testAnalysisContext);
    await _doAllTrackerWork();

    newFile(filePath, content: 'class A {}');
    uriToLibrary.clear();
    tracker.changeFile(filePath);
    await _doAllTrackerWork();

    _assertDeclaration(
      _getLibrary('dart:math'),
      'A',
      DeclarationKind.CLASS,
      relevanceTags: ['dart:math::A'],
    );

    newFile(filePath, content: 'class B {}');
    uriToLibrary.clear();
    tracker.changeFile(filePath);
    await _doAllTrackerWork();

    _assertDeclaration(
      _getLibrary('dart:math'),
      'B',
      DeclarationKind.CLASS,
      relevanceTags: ['dart:math::B'],
    );
  }

  test_deleted_exported() async {
    var a = convertPath('/home/test/lib/a.dart');
    var b = convertPath('/home/test/lib/b.dart');
    var c = convertPath('/home/test/lib/c.dart');
    var d = convertPath('/home/test/lib/d.dart');

    newFile(a, content: r'''
export 'b.dart';
class A {}
''');
    newFile(b, content: r'''
export 'c.dart';
class B {}
''');
    newFile(c, content: r'''
class C {}
''');
    newFile(d, content: r'''
class D {}
''');
    tracker.addContext(testAnalysisContext);

    await _doAllTrackerWork();
    _assertHasLibrary('package:test/a.dart', declarations: [
      _ExpectedDeclaration.class_('A'),
      _ExpectedDeclaration.class_('B'),
      _ExpectedDeclaration.class_('C'),
    ]);
    _assertHasLibrary('package:test/b.dart', declarations: [
      _ExpectedDeclaration.class_('B'),
      _ExpectedDeclaration.class_('C'),
    ]);
    _assertHasLibrary('package:test/c.dart', declarations: [
      _ExpectedDeclaration.class_('C'),
    ]);
    _assertHasLibrary('package:test/d.dart', declarations: [
      _ExpectedDeclaration.class_('D'),
    ]);

    deleteFile(c);
    tracker.changeFile(c);
    await _doAllTrackerWork();

    _assertHasLibrary('package:test/a.dart', declarations: [
      _ExpectedDeclaration.class_('A'),
      _ExpectedDeclaration.class_('B'),
    ]);
    _assertHasLibrary('package:test/b.dart', declarations: [
      _ExpectedDeclaration.class_('B'),
    ]);
    _assertHasNoLibrary('package:test/c.dart');
    _assertHasLibrary('package:test/d.dart', declarations: [
      _ExpectedDeclaration.class_('D'),
    ]);
  }

  test_deleted_library() async {
    var a = convertPath('/home/test/lib/a.dart');
    var b = convertPath('/home/test/lib/b.dart');

    newFile(a, content: '');
    newFile(b, content: '');
    tracker.addContext(testAnalysisContext);

    await _doAllTrackerWork();
    _assertHasLibrary('package:test/a.dart');
    _assertHasLibrary('package:test/b.dart');

    deleteFile(a);
    tracker.changeFile(a);
    await _doAllTrackerWork();

    _assertHasNoLibrary('package:test/a.dart');
    _assertHasLibrary('package:test/b.dart');
  }

  test_deleted_part() async {
    var a = convertPath('/home/test/lib/a.dart');
    var b = convertPath('/home/test/lib/b.dart');
    var c = convertPath('/home/test/lib/c.dart');

    newFile(a, content: r'''
part 'b.dart';
class A {}
''');
    newFile(b, content: r'''
part of 'a.dart';
class B {}
''');
    newFile(c, content: r'''
class C {}
''');
    tracker.addContext(testAnalysisContext);

    await _doAllTrackerWork();
    _assertHasLibrary('package:test/a.dart', declarations: [
      _ExpectedDeclaration.class_('A'),
      _ExpectedDeclaration.class_('B'),
    ]);
    _assertHasLibrary('package:test/c.dart', declarations: [
      _ExpectedDeclaration.class_('C'),
    ]);

    deleteFile(b);
    tracker.changeFile(b);
    await _doAllTrackerWork();

    _assertHasLibrary('package:test/a.dart', declarations: [
      _ExpectedDeclaration.class_('A'),
    ]);
    _assertHasLibrary('package:test/c.dart', declarations: [
      _ExpectedDeclaration.class_('C'),
    ]);
  }

  test_updated_exported() async {
    var a = convertPath('/home/test/lib/a.dart');
    var b = convertPath('/home/test/lib/b.dart');
    var c = convertPath('/home/test/lib/c.dart');
    var d = convertPath('/home/test/lib/d.dart');

    newFile(a, content: r'''
export 'b.dart';
class A {}
''');
    newFile(b, content: r'''
export 'c.dart';
class B {}
''');
    newFile(c, content: r'''
class C {}
''');
    newFile(d, content: r'''
class D {}
''');
    tracker.addContext(testAnalysisContext);

    await _doAllTrackerWork();
    _assertHasLibrary('package:test/a.dart', declarations: [
      _ExpectedDeclaration.class_('A'),
      _ExpectedDeclaration.class_('B'),
      _ExpectedDeclaration.class_('C'),
    ]);
    _assertHasLibrary('package:test/b.dart', declarations: [
      _ExpectedDeclaration.class_('B'),
      _ExpectedDeclaration.class_('C'),
    ]);
    _assertHasLibrary('package:test/c.dart', declarations: [
      _ExpectedDeclaration.class_('C'),
    ]);
    _assertHasLibrary('package:test/d.dart', declarations: [
      _ExpectedDeclaration.class_('D'),
    ]);

    newFile(c, content: r'''
class C2 {}
''');
    tracker.changeFile(c);
    await _doAllTrackerWork();

    _assertHasLibrary('package:test/a.dart', declarations: [
      _ExpectedDeclaration.class_('A'),
      _ExpectedDeclaration.class_('B'),
      _ExpectedDeclaration.class_('C2'),
    ]);
    _assertHasLibrary('package:test/b.dart', declarations: [
      _ExpectedDeclaration.class_('B'),
      _ExpectedDeclaration.class_('C2'),
    ]);
    _assertHasLibrary('package:test/c.dart', declarations: [
      _ExpectedDeclaration.class_('C2'),
    ]);
    _assertHasLibrary('package:test/d.dart', declarations: [
      _ExpectedDeclaration.class_('D'),
    ]);
  }

  test_updated_library() async {
    var a = convertPath('/home/test/lib/a.dart');
    var b = convertPath('/home/test/lib/b.dart');

    newFile(a, content: r'''
class A {}
''');
    newFile(b, content: r'''
class B {}
''');
    tracker.addContext(testAnalysisContext);

    await _doAllTrackerWork();
    _assertHasLibrary('package:test/a.dart', declarations: [
      _ExpectedDeclaration.class_('A'),
    ]);
    _assertHasLibrary('package:test/b.dart', declarations: [
      _ExpectedDeclaration.class_('B'),
    ]);

    newFile(a, content: r'''
class A2 {}
''');
    tracker.changeFile(a);
    await _doAllTrackerWork();

    _assertHasLibrary('package:test/a.dart', declarations: [
      _ExpectedDeclaration.class_('A2'),
    ]);
    _assertHasLibrary('package:test/b.dart', declarations: [
      _ExpectedDeclaration.class_('B'),
    ]);
  }

  test_updated_part() async {
    var a = convertPath('/home/test/lib/a.dart');
    var b = convertPath('/home/test/lib/b.dart');
    var c = convertPath('/home/test/lib/c.dart');

    newFile(a, content: r'''
part 'b.dart';
class A {}
''');
    newFile(b, content: r'''
part of 'a.dart';
class B {}
''');
    newFile(c, content: r'''
class C {}
''');
    tracker.addContext(testAnalysisContext);

    await _doAllTrackerWork();
    _assertHasLibrary('package:test/a.dart', declarations: [
      _ExpectedDeclaration.class_('A'),
      _ExpectedDeclaration.class_('B'),
    ]);
    _assertHasLibrary('package:test/c.dart', declarations: [
      _ExpectedDeclaration.class_('C'),
    ]);

    newFile(b, content: r'''
part of 'a.dart';
class B2 {}
''');
    tracker.changeFile(b);
    await _doAllTrackerWork();

    _assertHasLibrary('package:test/a.dart', declarations: [
      _ExpectedDeclaration.class_('A'),
      _ExpectedDeclaration.class_('B2'),
    ]);
    _assertHasLibrary('package:test/c.dart', declarations: [
      _ExpectedDeclaration.class_('C'),
    ]);
  }
}

@reflectiveTest
class DeclarationTest extends _Base {
  test_CLASS() async {
    newFile('/home/test/lib/test.dart', content: r'''
class A {}

abstract class B {}

@deprecated
class C {}

/// aaa
///
/// bbb bbb
/// ccc ccc
class D {}
''');

    tracker.addContext(testAnalysisContext);
    await _doAllTrackerWork();

    var library = _getLibrary('package:test/test.dart');
    _assertDeclaration(
      library,
      'A',
      DeclarationKind.CLASS,
      relevanceTags: ['package:test/test.dart::A'],
    );
    _assertDeclaration(
      library,
      'B',
      DeclarationKind.CLASS,
      isAbstract: true,
      relevanceTags: ['package:test/test.dart::B'],
    );
    _assertDeclaration(
      library,
      'C',
      DeclarationKind.CLASS,
      isDeprecated: true,
      relevanceTags: ['package:test/test.dart::C'],
    );
    _assertDeclaration(
      library,
      'D',
      DeclarationKind.CLASS,
      docSummary: 'aaa',
      docComplete: 'aaa\n\nbbb bbb\nccc ccc',
      relevanceTags: ['package:test/test.dart::D'],
    );
  }

  test_CLASS_TYPE_ALIAS() async {
    newFile('/home/test/lib/test.dart', content: r'''
mixin M {}

class A = Object with M;

@deprecated
class B = Object with M;

/// aaa
///
/// bbb bbb
class C = Object with M;
''');

    tracker.addContext(testAnalysisContext);
    await _doAllTrackerWork();

    var library = _getLibrary('package:test/test.dart');
    _assertDeclaration(
      library,
      'A',
      DeclarationKind.CLASS_TYPE_ALIAS,
      relevanceTags: ['package:test/test.dart::A'],
    );
    _assertDeclaration(
      library,
      'B',
      DeclarationKind.CLASS_TYPE_ALIAS,
      isDeprecated: true,
      relevanceTags: ['package:test/test.dart::B'],
    );
    _assertDeclaration(
      library,
      'C',
      DeclarationKind.CLASS_TYPE_ALIAS,
      docSummary: 'aaa',
      docComplete: 'aaa\n\nbbb bbb',
      relevanceTags: ['package:test/test.dart::C'],
    );
  }

  test_ENUM() async {
    newFile('/home/test/lib/test.dart', content: r'''
enum A {v}

@deprecated
enum B {v}

/// aaa
///
/// bbb bbb
enum C {v}
''');

    tracker.addContext(testAnalysisContext);
    await _doAllTrackerWork();

    var library = _getLibrary('package:test/test.dart');
    _assertDeclaration(
      library,
      'A',
      DeclarationKind.ENUM,
      relevanceTags: ['package:test/test.dart::A'],
    );
    _assertDeclaration(
      library,
      'B',
      DeclarationKind.ENUM,
      isDeprecated: true,
      relevanceTags: ['package:test/test.dart::B'],
    );
    _assertDeclaration(
      library,
      'C',
      DeclarationKind.ENUM,
      docSummary: 'aaa',
      docComplete: 'aaa\n\nbbb bbb',
      relevanceTags: ['package:test/test.dart::C'],
    );
  }

  test_ENUM_CONSTANT() async {
    newFile('/home/test/lib/test.dart', content: r'''
enum MyEnum {
  a,

  @deprecated
  b,

  /// aaa
  ///
  /// bbb bbb
  c
}
''');

    tracker.addContext(testAnalysisContext);
    await _doAllTrackerWork();

    var library = _getLibrary('package:test/test.dart');
    _assertDeclaration(
      library,
      'a',
      DeclarationKind.ENUM_CONSTANT,
      name2: 'MyEnum',
      relevanceTags: ['package:test/test.dart::MyEnum'],
    );
    _assertDeclaration(
      library,
      'b',
      DeclarationKind.ENUM_CONSTANT,
      isDeprecated: true,
      name2: 'MyEnum',
      relevanceTags: ['package:test/test.dart::MyEnum'],
    );
    _assertDeclaration(
      library,
      'c',
      DeclarationKind.ENUM_CONSTANT,
      docSummary: 'aaa',
      docComplete: 'aaa\n\nbbb bbb',
      name2: 'MyEnum',
      relevanceTags: ['package:test/test.dart::MyEnum'],
    );
  }

  test_FUNCTION() async {
    newFile('/home/test/lib/test.dart', content: r'''
void a() {}

@deprecated
void b() {}

/// aaa
///
/// bbb bbb
void c() {}

List<String> d(Map<String, int> p1, int p2, {double p3}) {}

void e<T extends num, U>() {}
''');

    tracker.addContext(testAnalysisContext);
    await _doAllTrackerWork();

    var library = _getLibrary('package:test/test.dart');
    _assertDeclaration(library, 'a', DeclarationKind.FUNCTION,
        parameterNames: [],
        parameters: '()',
        parameterTypes: [],
        requiredParameterCount: 0,
        returnType: 'void');
    _assertDeclaration(library, 'b', DeclarationKind.FUNCTION,
        isDeprecated: true,
        parameters: '()',
        parameterNames: [],
        parameterTypes: [],
        requiredParameterCount: 0,
        returnType: 'void');
    _assertDeclaration(library, 'c', DeclarationKind.FUNCTION,
        docSummary: 'aaa',
        docComplete: 'aaa\n\nbbb bbb',
        parameters: '()',
        parameterNames: [],
        parameterTypes: [],
        requiredParameterCount: 0,
        returnType: 'void');
    _assertDeclaration(library, 'd', DeclarationKind.FUNCTION,
        parameters: '(Map<String, int> p1, int p2, {double p3})',
        parameterNames: ['p1', 'p2', 'p3'],
        parameterTypes: ['Map<String, int>', 'int', 'double'],
        requiredParameterCount: 2,
        returnType: 'List<String>');
    _assertDeclaration(library, 'e', DeclarationKind.FUNCTION,
        parameters: '()',
        parameterNames: [],
        parameterTypes: [],
        requiredParameterCount: 0,
        returnType: 'void',
        typeParameters: '<T extends num, U>');
  }

  test_FUNCTION_TYPE_ALIAS() async {
    newFile('/home/test/lib/test.dart', content: r'''
typedef A = void Function();

@deprecated
typedef B = void Function();

/// aaa
///
/// bbb bbb
typedef C = void Function();

typedef D = int Function(int p1, [double p2, String p3]);

typedef E = void Function(int, double, {String p3});

typedef F = void Function<T extends num, U>();
''');

    tracker.addContext(testAnalysisContext);
    await _doAllTrackerWork();

    var library = _getLibrary('package:test/test.dart');
    _assertDeclaration(library, 'A', DeclarationKind.FUNCTION_TYPE_ALIAS,
        parameters: '()',
        parameterNames: [],
        parameterTypes: [],
        relevanceTags: ['package:test/test.dart::A'],
        requiredParameterCount: 0,
        returnType: 'void');
    _assertDeclaration(library, 'B', DeclarationKind.FUNCTION_TYPE_ALIAS,
        isDeprecated: true,
        parameters: '()',
        parameterNames: [],
        parameterTypes: [],
        relevanceTags: ['package:test/test.dart::B'],
        requiredParameterCount: 0,
        returnType: 'void');
    _assertDeclaration(library, 'C', DeclarationKind.FUNCTION_TYPE_ALIAS,
        docSummary: 'aaa',
        docComplete: 'aaa\n\nbbb bbb',
        parameters: '()',
        parameterNames: [],
        parameterTypes: [],
        relevanceTags: ['package:test/test.dart::C'],
        requiredParameterCount: 0,
        returnType: 'void');
    _assertDeclaration(library, 'D', DeclarationKind.FUNCTION_TYPE_ALIAS,
        parameters: '(int p1, [double p2, String p3])',
        parameterNames: ['p1', 'p2', 'p3'],
        parameterTypes: ['int', 'double', 'String'],
        relevanceTags: ['package:test/test.dart::D'],
        requiredParameterCount: 1,
        returnType: 'int');
    _assertDeclaration(library, 'E', DeclarationKind.FUNCTION_TYPE_ALIAS,
        parameters: '(int, double, {String p3})',
        parameterNames: ['', '', 'p3'],
        parameterTypes: ['int', 'double', 'String'],
        relevanceTags: ['package:test/test.dart::E'],
        requiredParameterCount: 2,
        returnType: 'void');
    _assertDeclaration(library, 'F', DeclarationKind.FUNCTION_TYPE_ALIAS,
        parameters: '()',
        parameterNames: [],
        parameterTypes: [],
        requiredParameterCount: 0,
        relevanceTags: ['package:test/test.dart::F'],
        returnType: 'void',
        typeParameters: '<T extends num, U>');
  }

  test_GETTER() async {
    newFile('/home/test/lib/test.dart', content: r'''
int get a => 0;

@deprecated
int get b => 0;

/// aaa
///
/// bbb bbb
int get c => 0;
''');

    tracker.addContext(testAnalysisContext);
    await _doAllTrackerWork();

    var library = _getLibrary('package:test/test.dart');
    _assertDeclaration(library, 'a', DeclarationKind.GETTER, returnType: 'int');
    _assertDeclaration(
      library,
      'b',
      DeclarationKind.GETTER,
      isDeprecated: true,
      returnType: 'int',
    );
    _assertDeclaration(
      library,
      'c',
      DeclarationKind.GETTER,
      docSummary: 'aaa',
      docComplete: 'aaa\n\nbbb bbb',
      returnType: 'int',
    );
  }

  test_library_isDeprecated() async {
    newFile('/home/test/lib/a.dart', content: '');
    newFile('/home/test/lib/b.dart', content: r'''
@deprecated
library my.lib;
''');
    newFile('/home/test/lib/c.dart', content: r'''
@Deprecated('description')
library my.lib;
''');
    tracker.addContext(testAnalysisContext);

    await _doAllTrackerWork();

    expect(uriToLibrary['package:test/a.dart'].isDeprecated, isFalse);
    expect(uriToLibrary['package:test/b.dart'].isDeprecated, isTrue);
    expect(uriToLibrary['package:test/c.dart'].isDeprecated, isTrue);
  }

  test_library_partDirective_empty() async {
    newFile('/home/test/lib/test.dart', content: r'''
part ' ';

class A {}
''');

    tracker.addContext(testAnalysisContext);
    await _doAllTrackerWork();

    var library = _getLibrary('package:test/test.dart');
    _assertDeclaration(
      library,
      'A',
      DeclarationKind.CLASS,
      relevanceTags: ['package:test/test.dart::A'],
    );
  }

  test_library_partDirective_incomplete() async {
    newFile('/home/test/lib/test.dart', content: r'''
part

class A {}
''');

    tracker.addContext(testAnalysisContext);
    await _doAllTrackerWork();

    var library = _getLibrary('package:test/test.dart');
    _assertDeclaration(
      library,
      'A',
      DeclarationKind.CLASS,
      relevanceTags: ['package:test/test.dart::A'],
    );
  }

  test_library_parts() async {
    newFile('/home/test/lib/a.dart', content: r'''
part of 'test.dart';
class A {}
''');
    newFile('/home/test/lib/b.dart', content: r'''
part of 'test.dart';
class B {}
''');
    newFile('/home/test/lib/test.dart', content: r'''
part 'a.dart';
part 'b.dart';
class C {}
''');
    tracker.addContext(testAnalysisContext);

    await _doAllTrackerWork();
    _assertHasLibrary('package:test/test.dart', declarations: [
      _ExpectedDeclaration.class_('A'),
      _ExpectedDeclaration.class_('B'),
      _ExpectedDeclaration.class_('C'),
    ]);
  }

  test_library_publicOnly() async {
    newFile('/home/test/lib/a.dart', content: r'''
part of 'test.dart';
class A {}
class _A {}
''');
    newFile('/home/test/lib/test.dart', content: r'''
part 'a.dart';
class B {}
class _B {}
''');
    tracker.addContext(testAnalysisContext);

    await _doAllTrackerWork();
    _assertHasLibrary('package:test/test.dart', declarations: [
      _ExpectedDeclaration.class_('A'),
      _ExpectedDeclaration.class_('B'),
    ]);
  }

  test_location() async {
    var code = r'''
class A {}

class B {}
''';
    var testPath = newFile('/home/test/lib/test.dart', content: code).path;

    tracker.addContext(testAnalysisContext);
    await _doAllTrackerWork();

    var library = _getLibrary('package:test/test.dart');
    _assertDeclaration(
      library,
      'A',
      DeclarationKind.CLASS,
      locationOffset: code.indexOf('A {}'),
      locationPath: testPath,
      locationStartColumn: 7,
      locationStartLine: 1,
      relevanceTags: ['package:test/test.dart::A'],
    );
    _assertDeclaration(
      library,
      'B',
      DeclarationKind.CLASS,
      locationOffset: code.indexOf('B {}'),
      locationPath: testPath,
      locationStartColumn: 7,
      locationStartLine: 3,
      relevanceTags: ['package:test/test.dart::B'],
    );
  }

  test_MIXIN() async {
    newFile('/home/test/lib/test.dart', content: r'''
mixin A {}

@deprecated
mixin B {}

/// aaa
///
/// bbb bbb
/// ccc ccc
mixin C {}
''');

    tracker.addContext(testAnalysisContext);
    await _doAllTrackerWork();

    var library = _getLibrary('package:test/test.dart');
    _assertDeclaration(
      library,
      'A',
      DeclarationKind.MIXIN,
      relevanceTags: ['package:test/test.dart::A'],
    );
    _assertDeclaration(
      library,
      'B',
      DeclarationKind.MIXIN,
      isDeprecated: true,
      relevanceTags: ['package:test/test.dart::B'],
    );
    _assertDeclaration(
      library,
      'C',
      DeclarationKind.MIXIN,
      docSummary: 'aaa',
      docComplete: 'aaa\n\nbbb bbb\nccc ccc',
      relevanceTags: ['package:test/test.dart::C'],
    );
  }

  test_SETTER() async {
    newFile('/home/test/lib/test.dart', content: r'''
set a(int value) {}

@deprecated
set b(int value) {}

/// aaa
///
/// bbb bbb
set c(int value) {}
''');

    tracker.addContext(testAnalysisContext);
    await _doAllTrackerWork();

    var library = _getLibrary('package:test/test.dart');
    _assertDeclaration(
      library,
      'a',
      DeclarationKind.SETTER,
      parameters: '(int value)',
      parameterNames: ['value'],
      parameterTypes: ['int'],
      requiredParameterCount: 1,
    );
    _assertDeclaration(
      library,
      'b',
      DeclarationKind.SETTER,
      isDeprecated: true,
      parameters: '(int value)',
      parameterNames: ['value'],
      parameterTypes: ['int'],
      requiredParameterCount: 1,
    );
    _assertDeclaration(
      library,
      'c',
      DeclarationKind.SETTER,
      docSummary: 'aaa',
      docComplete: 'aaa\n\nbbb bbb',
      parameters: '(int value)',
      parameterNames: ['value'],
      parameterTypes: ['int'],
      requiredParameterCount: 1,
    );
  }

  test_VARIABLE() async {
    newFile('/home/test/lib/test.dart', content: r'''
int a;

@deprecated
int b;

/// aaa
///
/// bbb bbb
int c;

const d = 0;

final double e = 2.7;
''');

    tracker.addContext(testAnalysisContext);
    await _doAllTrackerWork();

    var library = _getLibrary('package:test/test.dart');
    _assertDeclaration(library, 'a', DeclarationKind.VARIABLE,
        returnType: 'int');
    _assertDeclaration(library, 'b', DeclarationKind.VARIABLE,
        isDeprecated: true, returnType: 'int');
    _assertDeclaration(library, 'c', DeclarationKind.VARIABLE,
        docSummary: 'aaa', docComplete: 'aaa\n\nbbb bbb', returnType: 'int');
    _assertDeclaration(library, 'd', DeclarationKind.VARIABLE,
        isConst: true, relevanceTags: ['dart:core::int'], returnType: '');
    _assertDeclaration(library, 'e', DeclarationKind.VARIABLE,
        isFinal: true,
        relevanceTags: ['dart:core::double'],
        returnType: 'double');
  }
}

@reflectiveTest
class ExportTest extends _Base {
  test_combinators_hide() async {
    newFile('/home/test/lib/a.dart', content: r'''
class A {}
class B {}
class C {}
''');
    newFile('/home/test/lib/test.dart', content: r'''
export 'a.dart' hide B;
class D {}
''');
    tracker.addContext(testAnalysisContext);

    await _doAllTrackerWork();
    _assertHasLibrary('package:test/test.dart', declarations: [
      _ExpectedDeclaration.class_('A'),
      _ExpectedDeclaration.class_('C'),
      _ExpectedDeclaration.class_('D'),
    ]);
  }

  test_combinators_show() async {
    newFile('/home/test/lib/a.dart', content: r'''
class A {}
class B {}
class C {}
''');
    newFile('/home/test/lib/test.dart', content: r'''
export 'a.dart' show B;
class D {}
''');
    tracker.addContext(testAnalysisContext);

    await _doAllTrackerWork();
    _assertHasLibrary('package:test/test.dart', declarations: [
      _ExpectedDeclaration.class_('B'),
      _ExpectedDeclaration.class_('D'),
    ]);
  }

  test_combinators_show_enum() async {
    newFile('/home/test/lib/a.dart', content: r'''
enum E1 {a}
enum E2 {b}
''');
    newFile('/home/test/lib/test.dart', content: r'''
export 'a.dart' show E1;
''');
    tracker.addContext(testAnalysisContext);

    await _doAllTrackerWork();
    _assertHasLibrary('package:test/test.dart', declarations: [
      _ExpectedDeclaration.enum_('E1'),
      _ExpectedDeclaration.enumConstant('a', 'E1'),
    ]);
  }

  test_cycle() async {
    newFile('/home/test/lib/a.dart', content: r'''
export 'b.dart';
class A {}
''');
    newFile('/home/test/lib/b.dart', content: r'''
export 'a.dart';
class B {}
''');
    newFile('/home/test/lib/test.dart', content: r'''
export 'b.dart';
class C {}
''');
    tracker.addContext(testAnalysisContext);

    await _doAllTrackerWork();

    _assertHasLibrary('package:test/a.dart', declarations: [
      _ExpectedDeclaration.class_('A'),
      _ExpectedDeclaration.class_('B'),
    ]);

    _assertHasLibrary('package:test/b.dart', declarations: [
      _ExpectedDeclaration.class_('A'),
      _ExpectedDeclaration.class_('B'),
    ]);

    _assertHasLibrary('package:test/test.dart', declarations: [
      _ExpectedDeclaration.class_('A'),
      _ExpectedDeclaration.class_('B'),
      _ExpectedDeclaration.class_('C'),
    ]);
  }

  test_enum() async {
    newFile('/home/test/lib/test.dart', content: r'''
enum E1 {a, b}
enum E2 {a, b}
''');
    tracker.addContext(testAnalysisContext);

    await _doAllTrackerWork();
    _assertHasLibrary('package:test/test.dart', declarations: [
      _ExpectedDeclaration.enum_('E1'),
      _ExpectedDeclaration.enumConstant('a', 'E1'),
      _ExpectedDeclaration.enumConstant('b', 'E1'),
      _ExpectedDeclaration.enum_('E2'),
      _ExpectedDeclaration.enumConstant('a', 'E2'),
      _ExpectedDeclaration.enumConstant('b', 'E2'),
    ]);
  }

  test_missing() async {
    newFile('/home/test/lib/test.dart', content: r'''
export 'a.dart';
class C {}
''');
    tracker.addContext(testAnalysisContext);

    await _doAllTrackerWork();
    _assertHasLibrary('package:test/test.dart', declarations: [
      _ExpectedDeclaration.class_('C'),
    ]);
  }

  test_sequence() async {
    newFile('/home/test/lib/a.dart', content: r'''
class A {}
''');
    newFile('/home/test/lib/b.dart', content: r'''
export 'a.dart';
class B {}
''');
    newFile('/home/test/lib/test.dart', content: r'''
export 'b.dart';
class C {}
''');
    tracker.addContext(testAnalysisContext);

    await _doAllTrackerWork();

    _assertHasLibrary('package:test/a.dart', declarations: [
      _ExpectedDeclaration.class_('A'),
    ]);

    _assertHasLibrary('package:test/b.dart', declarations: [
      _ExpectedDeclaration.class_('A'),
      _ExpectedDeclaration.class_('B'),
    ]);

    _assertHasLibrary('package:test/test.dart', declarations: [
      _ExpectedDeclaration.class_('A'),
      _ExpectedDeclaration.class_('B'),
      _ExpectedDeclaration.class_('C'),
    ]);
  }

  test_shadowedByLocal() async {
    newFile('/home/test/lib/a.dart', content: r'''
class A {}
class B {}
''');
    newFile('/home/test/lib/test.dart', content: r'''
export 'a.dart';

mixin B {}
''');
    tracker.addContext(testAnalysisContext);

    await _doAllTrackerWork();
    _assertHasLibrary('package:test/test.dart', declarations: [
      _ExpectedDeclaration.class_('A'),
      _ExpectedDeclaration.mixin('B'),
    ]);
  }

  test_simple() async {
    newFile('/home/test/lib/a.dart', content: r'''
class A {}
class B {}
''');
    newFile('/home/test/lib/test.dart', content: r'''
export 'a.dart';
class C {}
''');
    tracker.addContext(testAnalysisContext);

    await _doAllTrackerWork();
    _assertHasLibrary('package:test/test.dart', declarations: [
      _ExpectedDeclaration.class_('A'),
      _ExpectedDeclaration.class_('B'),
      _ExpectedDeclaration.class_('C'),
    ]);
  }
}

@reflectiveTest
class GetLibrariesTest extends _Base {
  test_bazel() async {
    newFile('/home/aaa/lib/a.dart', content: 'class A {}');
    newFile('/home/aaa/lib/src/a2.dart', content: 'class A2 {}');

    newFile('/home/bbb/lib/b.dart', content: 'class B {}');
    newFile('/home/bbb/lib/src/b2.dart', content: 'class B2 {}');

    newFile('/home/material_button/BUILD', content: '');
    newFile(
      '/home/material_button/lib/button.dart',
      content: 'class MaterialButton {}',
    );
    newFile(
      '/home/material_button/test/button_test.dart',
      content: 'class MaterialButtonTest {}',
    );

    newFile('/home/material_button/testing/BUILD', content: '');
    newFile(
      '/home/material_button/testing/lib/material_button_po.dart',
      content: 'class MaterialButtonPO {}',
    );

    var packagesFilePath = '/home/material_button/.packages';
    addDotPackagesDependency(packagesFilePath, 'aaa', '/home/aaa');
    addDotPackagesDependency(packagesFilePath, 'bbb', '/home/bbb');
    addDotPackagesDependency(
      packagesFilePath,
      'material_button',
      '/home/material_button',
    );
    addDotPackagesDependency(
      packagesFilePath,
      'material_button_testing',
      '/home/material_button/testing',
    );

    var analysisContext = analysisContextCollection.contextFor(
      convertPath('/home/material_button'),
    );
    var context = tracker.addContext(analysisContext);
    context.setDependencies({
      convertPath('/home/material_button'): [convertPath('/home/aaa/lib')],
      convertPath('/home/material_button/testing'): [
        convertPath('/home/bbb/lib'),
        convertPath('/home/material_button/lib'),
      ],
    });
    await _doAllTrackerWork();

    _assertHasLibrary('package:aaa/a.dart', declarations: [
      _ExpectedDeclaration.class_('A'),
    ]);
    _assertHasNoLibrary('package:aaa/src/a2.dart');

    _assertHasLibrary('package:bbb/b.dart', declarations: [
      _ExpectedDeclaration.class_('B'),
    ]);
    _assertHasNoLibrary('package:bbb/src/b2.dart');

    _assertHasLibrary('package:material_button/button.dart', declarations: [
      _ExpectedDeclaration.class_('MaterialButton'),
    ]);
    _assertHasLibrary(
      toUriStr('/home/material_button/test/button_test.dart'),
      declarations: [
        _ExpectedDeclaration.class_('MaterialButtonTest'),
      ],
    );
    _assertHasLibrary(
      'package:material_button_testing/material_button_po.dart',
      declarations: [
        _ExpectedDeclaration.class_('MaterialButtonPO'),
      ],
    );

    {
      var path = convertPath('/home/material_button/lib/_.dart');
      var libraries = context.getLibraries(path);
      _assertHasLibraries(
        libraries.sdk,
        uriList: ['dart:core', 'dart:async'],
      );
      _assertHasLibraries(
        libraries.dependencies,
        uriList: ['package:aaa/a.dart'],
        only: true,
      );
      _assertHasLibraries(
        libraries.context,
        uriList: [
          'package:material_button/button.dart',
        ],
        only: true,
      );
    }

    {
      var path = convertPath('/home/material_button/test/_.dart');
      var libraries = context.getLibraries(path);
      _assertHasLibraries(
        libraries.sdk,
        uriList: ['dart:core', 'dart:async'],
      );
      _assertHasLibraries(
        libraries.dependencies,
        uriList: ['package:aaa/a.dart'],
        only: true,
      );
      _assertHasLibraries(
        libraries.context,
        uriList: [
          'package:material_button/button.dart',
          toUriStr('/home/material_button/test/button_test.dart'),
        ],
        only: true,
      );
    }

    {
      var path = convertPath('/home/material_button/testing/lib/_.dart');
      var libraries = context.getLibraries(path);
      _assertHasLibraries(
        libraries.sdk,
        uriList: ['dart:core', 'dart:async'],
      );
      _assertHasLibraries(
        libraries.dependencies,
        uriList: [
          'package:bbb/b.dart',
          'package:material_button/button.dart',
        ],
        only: true,
      );
      _assertHasLibraries(
        libraries.context,
        uriList: [
          'package:material_button_testing/material_button_po.dart',
        ],
        only: true,
      );
    }
  }

  test_excludeSelf() async {
    var a = convertPath('/home/test/lib/a.dart');
    var b = convertPath('/home/test/lib/b.dart');
    var c = convertPath('/home/test/lib/c.dart');

    newFile(a);
    newFile(b);
    newFile(c);

    var context = tracker.addContext(testAnalysisContext);
    await _doAllTrackerWork();

    var aList = _uriListOfContextLibraries(context, a);
    expect(
      aList,
      unorderedEquals([
        'package:test/b.dart',
        'package:test/c.dart',
      ]),
    );

    var bList = _uriListOfContextLibraries(context, b);
    expect(
      bList,
      unorderedEquals([
        'package:test/a.dart',
        'package:test/c.dart',
      ]),
    );
  }

  test_excludeSelf_part() async {
    var a = convertPath('/home/test/lib/a.dart');
    var b = convertPath('/home/test/lib/b.dart');
    var c = convertPath('/home/test/lib/c.dart');

    newFile(a, content: r'''
part 'b.dart';
''');
    newFile(b, content: r'''
part of 'a.dart';
''');
    newFile(c);

    var context = tracker.addContext(testAnalysisContext);
    await _doAllTrackerWork();

    var aList = _uriListOfContextLibraries(context, a);
    expect(aList, unorderedEquals(['package:test/c.dart']));

    var bList = _uriListOfContextLibraries(context, b);
    expect(bList, unorderedEquals(['package:test/c.dart']));

    var cList = _uriListOfContextLibraries(context, c);
    expect(cList, unorderedEquals(['package:test/a.dart']));
  }

  test_pub() async {
    newFile('/home/aaa/lib/a.dart', content: 'class A {}');
    newFile('/home/aaa/lib/src/a2.dart', content: 'class A2 {}');

    newFile('/home/bbb/lib/b.dart', content: 'class B {}');
    newFile('/home/bbb/lib/src/b2.dart', content: 'class B2 {}');

    newFile('/home/ccc/lib/c.dart', content: 'class C {}');
    newFile('/home/ccc/lib/src/c2.dart', content: 'class C2 {}');

    newFile('/home/test/pubspec.yaml', content: r'''
name: test
dependencies:
  aaa: any
dev_dependencies:
  bbb: any
''');
    newFile('/home/test/lib/t.dart', content: 'class T {}');
    newFile('/home/test/lib/src/t2.dart', content: 'class T2 {}');
    newFile('/home/test/bin/t3.dart', content: 'class T3 {}');
    newFile('/home/test/test/t4.dart', content: 'class T4 {}');

    newFile('/home/test/samples/basic/pubspec.yaml', content: r'''
name: test
dependencies:
  ccc: any
  test: any
''');
    newFile('/home/test/samples/basic/lib/s.dart', content: 'class S {}');

    addTestPackageDependency('aaa', '/home/aaa');
    addTestPackageDependency('bbb', '/home/bbb');
    addTestPackageDependency('ccc', '/home/ccc');
    addTestPackageDependency('basic', '/home/test/samples/basic');

    var context = tracker.addContext(testAnalysisContext);
    await _doAllTrackerWork();

    _assertHasLibrary('package:aaa/a.dart', declarations: [
      _ExpectedDeclaration.class_('A'),
    ]);
    _assertHasNoLibrary('package:aaa/src/a2.dart');

    _assertHasLibrary('package:bbb/b.dart', declarations: [
      _ExpectedDeclaration.class_('B'),
    ]);
    _assertHasNoLibrary('package:bbb/src/b2.dart');

    _assertHasLibrary('package:ccc/c.dart', declarations: [
      _ExpectedDeclaration.class_('C'),
    ]);
    _assertHasNoLibrary('package:ccc/src/c2.dart');

    _assertHasLibrary('package:test/t.dart', declarations: [
      _ExpectedDeclaration.class_('T'),
    ]);
    _assertHasLibrary('package:test/src/t2.dart', declarations: [
      _ExpectedDeclaration.class_('T2'),
    ]);

    _assertHasLibrary('package:basic/s.dart', declarations: [
      _ExpectedDeclaration.class_('S'),
    ]);

    {
      var path = convertPath('/home/test/lib/_.dart');
      var libraries = context.getLibraries(path);
      _assertHasLibraries(
        libraries.sdk,
        uriList: ['dart:core', 'dart:async'],
      );
      _assertHasLibraries(
        libraries.dependencies,
        uriList: ['package:aaa/a.dart'],
        only: true,
      );
      // Note, no `bin/` or `test/` libraries.
      // Note, has `lib/src` library.
      _assertHasLibraries(
        libraries.context,
        uriList: [
          'package:test/t.dart',
          'package:test/src/t2.dart',
        ],
        only: true,
      );
    }

    {
      var path = convertPath('/home/test/bin/_.dart');
      var libraries = context.getLibraries(path);
      _assertHasLibraries(
        libraries.sdk,
        uriList: ['dart:core', 'dart:async'],
      );
      _assertHasLibraries(
        libraries.dependencies,
        uriList: [
          'package:aaa/a.dart',
          'package:bbb/b.dart',
        ],
        only: true,
      );
      // Note, no `test/` libraries.
      _assertHasLibraries(
        libraries.context,
        uriList: [
          'package:test/t.dart',
          'package:test/src/t2.dart',
          toUriStr('/home/test/bin/t3.dart'),
        ],
        only: true,
      );
    }

    {
      var path = convertPath('/home/test/test/_.dart');
      var libraries = context.getLibraries(path);
      _assertHasLibraries(
        libraries.sdk,
        uriList: ['dart:core', 'dart:async'],
      );
      _assertHasLibraries(
        libraries.dependencies,
        uriList: [
          'package:aaa/a.dart',
          'package:bbb/b.dart',
        ],
        only: true,
      );
      // Note, no `bin/` libraries.
      _assertHasLibraries(
        libraries.context,
        uriList: [
          'package:test/t.dart',
          'package:test/src/t2.dart',
          toUriStr('/home/test/test/t4.dart'),
        ],
        only: true,
      );
    }

    {
      var path = convertPath('/home/test/samples/basic/lib/_.dart');
      var libraries = context.getLibraries(path);
      _assertHasLibraries(
        libraries.sdk,
        uriList: ['dart:core', 'dart:async'],
      );
      _assertHasLibraries(
        libraries.dependencies,
        uriList: [
          'package:ccc/c.dart',
          'package:test/t.dart',
        ],
        only: true,
      );
      // Note, no `package:test` libraries.
      _assertHasLibraries(
        libraries.context,
        uriList: [
          'package:basic/s.dart',
        ],
        only: true,
      );
    }
  }

  test_sdk_excludesPrivate() async {
    newFile('/home/test/lib/test.dart', content: '');

    var context = tracker.addContext(testAnalysisContext);
    await _doAllTrackerWork();

    var path = convertPath('/home/test/lib/_.dart');
    var libraries = context.getLibraries(path);
    expect(
      libraries.sdk.where((library) => library.uriStr.startsWith('dart:_')),
      isEmpty,
    );
  }

  test_setDependencies() async {
    newFile('/home/aaa/lib/a.dart', content: r'''
export 'src/a2.dart' show A2;
class A1 {}
''');
    newFile('/home/aaa/lib/src/a2.dart', content: r'''
class A2 {}
class A3 {}
''');
    newFile('/home/bbb/lib/b.dart', content: r'''
class B {}
''');

    addTestPackageDependency('aaa', '/home/aaa');
    addTestPackageDependency('bbb', '/home/bbb');

    newFile('/home/test/lib/t.dart', content: 'class T {}');
    newFile('/home/test/lib/src/t2.dart', content: 'class T2 {}');
    newFile('/home/test/test/t3.dart', content: 'class T3 {}');

    var context = tracker.addContext(testAnalysisContext);
    context.setDependencies({
      convertPath('/home/test'): [
        convertPath('/home/aaa/lib'),
        convertPath('/home/bbb/lib'),
      ],
      convertPath('/home/test/lib'): [convertPath('/home/aaa/lib')],
    });

    await _doAllTrackerWork();

    _assertHasLibrary('package:aaa/a.dart', declarations: [
      _ExpectedDeclaration.class_('A1'),
      _ExpectedDeclaration.class_('A2'),
    ]);
    _assertHasNoLibrary('package:aaa/src/a2.dart');
    _assertHasLibrary('package:bbb/b.dart', declarations: [
      _ExpectedDeclaration.class_('B'),
    ]);
    _assertHasLibrary('package:test/t.dart', declarations: [
      _ExpectedDeclaration.class_('T'),
    ]);
    _assertHasLibrary('package:test/src/t2.dart', declarations: [
      _ExpectedDeclaration.class_('T2'),
    ]);
    _assertHasLibrary(
      toUriStr('/home/test/test/t3.dart'),
      declarations: [
        _ExpectedDeclaration.class_('T3'),
      ],
    );

    // `lib/` is configured to see `package:aaa`.
    {
      var path = convertPath('/home/test/lib/_.dart');
      var libraries = context.getLibraries(path);
      _assertHasLibraries(
        libraries.dependencies,
        uriList: ['package:aaa/a.dart'],
        only: true,
      );
      // Not in a package, so all context files are visible.
      _assertHasLibraries(
        libraries.context,
        uriList: [
          'package:test/t.dart',
          'package:test/src/t2.dart',
          toUriStr('/home/test/test/t3.dart'),
        ],
        only: true,
      );
    }

    // `test/` is configured to see `package:aaa` and `package:bbb`.
    {
      var path = convertPath('/home/test/bin/_.dart');
      var libraries = context.getLibraries(path);
      _assertHasLibraries(
        libraries.dependencies,
        uriList: [
          'package:aaa/a.dart',
          'package:bbb/b.dart',
        ],
        only: true,
      );
      // Not in a package, so all context files are visible.
      _assertHasLibraries(
        libraries.context,
        uriList: [
          'package:test/t.dart',
          'package:test/src/t2.dart',
          toUriStr('/home/test/test/t3.dart'),
        ],
        only: true,
      );
    }
  }

  test_setDependencies_twice() async {
    newFile('/home/aaa/lib/a.dart', content: r'''
class A {}
''');
    newFile('/home/bbb/lib/b.dart', content: r'''
class B {}
''');

    addTestPackageDependency('aaa', '/home/aaa');
    addTestPackageDependency('bbb', '/home/bbb');

    newFile('/home/test/lib/test.dart', content: r'''
class C {}
''');

    var context = tracker.addContext(testAnalysisContext);

    var aUri = 'package:aaa/a.dart';
    var bUri = 'package:bbb/b.dart';

    context.setDependencies({
      convertPath('/home/test'): [convertPath('/home/aaa/lib')],
    });
    await _doAllTrackerWork();

    _assertHasLibrary(aUri, declarations: [
      _ExpectedDeclaration.class_('A'),
    ]);
    _assertHasNoLibrary(bUri);

    // The package can see package:aaa, but not package:bbb
    {
      var path = convertPath('/home/test/lib/a.dart');
      var libraries = context.getLibraries(path);
      _assertHasLibraries(
        libraries.dependencies,
        uriList: ['package:aaa/a.dart'],
        only: true,
      );
    }

    context.setDependencies({
      convertPath('/home/test'): [convertPath('/home/bbb/lib')],
    });
    await _doAllTrackerWork();

    _assertHasLibrary(aUri, declarations: [
      _ExpectedDeclaration.class_('A'),
    ]);
    _assertHasLibrary(bUri, declarations: [
      _ExpectedDeclaration.class_('B'),
    ]);

    // The package can see package:bbb, but not package:aaa
    {
      var path = convertPath('/home/test/lib/a.dart');
      var libraries = context.getLibraries(path);
      _assertHasLibraries(
        libraries.dependencies,
        uriList: ['package:bbb/b.dart'],
        only: true,
      );
    }
  }

  static void _assertHasLibraries(List<Library> libraries,
      {@required List<String> uriList, bool only = false}) {
    var actualUriList = libraries.map((lib) => lib.uriStr).toList();
    if (only) {
      expect(actualUriList, unorderedEquals(uriList));
    } else {
      expect(actualUriList, containsAll(uriList));
    }
  }

  static List<String> _uriListOfContextLibraries(
    DeclarationsContext context,
    String path,
  ) {
    return context.getLibraries(path).context.map((l) => l.uriStr).toList();
  }
}

class _Base extends AbstractContextTest {
  DeclarationsTracker tracker;

  final List<LibraryChange> changes = [];

  final Map<int, Library> idToLibrary = {};
  final Map<String, Library> uriToLibrary = {};

  @override
  setUp() {
    super.setUp();
    _createTracker();
  }

  void _assertDeclaration(
    Library library,
    String name,
    DeclarationKind kind, {
    String docComplete,
    String docSummary,
    bool isAbstract = false,
    bool isConst = false,
    bool isDeprecated = false,
    bool isFinal = false,
    int locationOffset,
    String locationPath,
    int locationStartColumn,
    int locationStartLine,
    String name2,
    String parameters,
    List<String> parameterNames,
    List<String> parameterTypes,
    List<String> relevanceTags,
    int requiredParameterCount,
    String returnType,
    String typeParameters,
  }) {
    var declaration = _getDeclaration(library, name);
    expect(declaration.docComplete, docComplete);
    expect(declaration.docSummary, docSummary);
    expect(declaration.name, name);
    expect(declaration.name2, name2);
    expect(declaration.kind, kind);
    expect(declaration.isAbstract, isAbstract);
    expect(declaration.isConst, isConst);
    expect(declaration.isDeprecated, isDeprecated);
    expect(declaration.isFinal, isFinal);
    expect(declaration.parameters, parameters);
    expect(declaration.parameterNames, parameterNames);
    expect(declaration.parameterTypes, parameterTypes);
    expect(declaration.relevanceTags, relevanceTags);
    expect(declaration.requiredParameterCount, requiredParameterCount);
    expect(declaration.returnType, returnType);
    expect(declaration.typeParameters, typeParameters);
    if (locationOffset != null) {
      expect(declaration.locationOffset, locationOffset);
      expect(declaration.locationPath, locationPath);
      expect(declaration.locationStartColumn, locationStartColumn);
      expect(declaration.locationStartLine, locationStartLine);
    }
  }

  void _assertHasDeclaration(Library library, _ExpectedDeclaration expected) {
    expect(
      library.declarations,
      contains(predicate((Declaration d) {
        return d.name == expected.name &&
            d.name2 == expected.name2 &&
            d.kind == expected.kind;
      })),
      reason: '$expected',
    );
  }

  /// Assert that the current state has the library with the given [uri].
  ///
  /// If [declarations] provided, also checks that the library has exactly
  /// these declarations.
  void _assertHasLibrary(String uri,
      {List<_ExpectedDeclaration> declarations}) {
    var library = uriToLibrary[uri];
    expect(library, isNotNull);
    if (declarations != null) {
      expect(library.declarations, hasLength(declarations.length));
      for (var expected in declarations) {
        _assertHasDeclaration(library, expected);
      }
    }
  }

  void _assertHasNoLibrary(String uri) {
    expect(uriToLibrary, isNot(contains(uri)));
  }

  void _createTracker() {
    uriToLibrary.clear();

    tracker = DeclarationsTracker(byteStore, resourceProvider);
    tracker.changes.listen((change) {
      changes.add(change);
      for (var library in change.changed) {
        idToLibrary[library.id] = library;
        uriToLibrary[library.uriStr] = library;
      }
      idToLibrary.removeWhere((uriStr, library) {
        return change.removed.contains(library.id);
      });
      uriToLibrary.removeWhere((uriStr, library) {
        return change.removed.contains(library.id);
      });
    });
  }

  Future<void> _doAllTrackerWork() async {
    while (tracker.hasWork) {
      tracker.doWork();
    }
    await pumpEventQueue();
  }

  Declaration _getDeclaration(Library library, String name) {
    return library.declarations
        .singleWhere((declaration) => declaration.name == name);
  }

  Library _getLibrary(String uriStr) {
    var library = uriToLibrary[uriStr];
    expect(library, isNotNull);
    return library;
  }
}

class _ExpectedDeclaration {
  final DeclarationKind kind;
  final String name;
  final String name2;

  _ExpectedDeclaration(this.kind, this.name, this.name2);

  _ExpectedDeclaration.class_(String name)
      : this(DeclarationKind.CLASS, name, null);

  _ExpectedDeclaration.classTypeAlias(String name)
      : this(DeclarationKind.CLASS_TYPE_ALIAS, name, null);

  _ExpectedDeclaration.enum_(String name)
      : this(DeclarationKind.ENUM, name, null);

  _ExpectedDeclaration.enumConstant(String name, String name2)
      : this(DeclarationKind.ENUM_CONSTANT, name, name2);

  _ExpectedDeclaration.function(String name)
      : this(DeclarationKind.FUNCTION, name, null);

  _ExpectedDeclaration.functionTypeAlias(String name)
      : this(DeclarationKind.FUNCTION_TYPE_ALIAS, name, null);

  _ExpectedDeclaration.mixin(String name)
      : this(DeclarationKind.MIXIN, name, null);

  _ExpectedDeclaration.variable(String name)
      : this(DeclarationKind.VARIABLE, name, null);

  @override
  String toString() {
    if (name2 != null) {
      return '($kind, $name, $name2)';
    } else {
      return '($kind, $name)';
    }
  }
}