pkg/analyzer_plugin/test/plugin/assist_mixin_test.dart

// Copyright (c) 2017, 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_plugin/plugin/assist_mixin.dart';
import 'package:analyzer_plugin/plugin/plugin.dart';
import 'package:analyzer_plugin/protocol/protocol_common.dart';
import 'package:analyzer_plugin/protocol/protocol_generated.dart';
import 'package:analyzer_plugin/src/utilities/assist/assist.dart';
import 'package:analyzer_plugin/utilities/assist/assist.dart';
import 'package:test/test.dart';
import 'package:test_reflective_loader/test_reflective_loader.dart';

import 'mocks.dart';
import 'plugin_test.dart';

void main() {
  defineReflectiveTests(AssistsMixinTest);
}

@reflectiveTest
class AssistsMixinTest extends AbstractPluginTest {
  late String packagePath1;
  late String filePath1;
  late ContextRoot contextRoot1;

  @override
  ServerPlugin createPlugin() {
    return _TestServerPlugin(resourceProvider);
  }

  @override
  Future<void> setUp() async {
    await super.setUp();

    packagePath1 = convertPath('/package1');
    filePath1 = join(packagePath1, 'lib', 'test.dart');
    newFile(filePath1, '');
    contextRoot1 = ContextRoot(packagePath1, <String>[]);
  }

  Future<void> test_handleEditGetAssists() async {
    await plugin.handleAnalysisSetContextRoots(
      AnalysisSetContextRootsParams([contextRoot1]),
    );

    var result = await plugin.handleEditGetAssists(
      EditGetAssistsParams(filePath1, 10, 0),
    );
    expect(result, isNotNull);
    expect(result.assists, hasLength(3));
  }
}

class _TestAssistContributor implements AssistContributor {
  List<PrioritizedSourceChange> changes;

  _TestAssistContributor(this.changes);

  @override
  Future<void> computeAssists(
    AssistRequest request,
    AssistCollector collector,
  ) async {
    for (var change in changes) {
      collector.addAssist(change);
    }
  }
}

class _TestServerPlugin extends MockServerPlugin with AssistsMixin {
  _TestServerPlugin(super.resourceProvider);

  PrioritizedSourceChange createChange() {
    return PrioritizedSourceChange(0, SourceChange(''));
  }

  @override
  List<AssistContributor> getAssistContributors(String path) {
    return <AssistContributor>[
      _TestAssistContributor(<PrioritizedSourceChange>[createChange()]),
      _TestAssistContributor(<PrioritizedSourceChange>[
        createChange(),
        createChange(),
      ]),
    ];
  }

  @override
  Future<AssistRequest> getAssistRequest(
    EditGetAssistsParams parameters,
  ) async {
    var result = MockResolvedUnitResult();
    return DartAssistRequestImpl(
      resourceProvider,
      parameters.offset,
      parameters.length,
      result,
    );
  }
}