pkg/analysis_server/test/services/refactoring/abstract_rename.dart

// Copyright (c) 2014, 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.

// @dart = 2.9

import 'package:analysis_server/src/services/correction/namespace.dart';
import 'package:analysis_server/src/services/refactoring/refactoring.dart';
import 'package:analyzer/dart/ast/ast.dart';
import 'package:analyzer/dart/element/element.dart';
import 'package:analyzer/src/dart/ast/extensions.dart';
import 'package:analyzer_plugin/protocol/protocol_common.dart' hide Element;
import 'package:test/test.dart';

import 'abstract_refactoring.dart';

export 'package:analyzer/src/test_utilities/package_config_file_builder.dart';

/// The base class for all [RenameRefactoring] tests.
class RenameRefactoringTest extends RefactoringTest {
  @override
  RenameRefactoring refactoring;

  /// Asserts that [refactoring] has potential edits in [testFile] at offset
  /// of the given [searches].
  void assertPotentialEdits(List<String> searches) {
    var expectedOffsets = <int>{};
    for (var search in searches) {
      var offset = findOffset(search);
      expectedOffsets.add(offset);
    }
    // remove offset marked as potential
    for (var potentialId in refactoring.potentialEditIds) {
      var edit = findEditById(potentialId);
      expect(edit, isNotNull);
      expectedOffsets.remove(edit.offset);
    }
    // all potential offsets are marked as such
    expect(expectedOffsets, isEmpty);
  }

  /// Creates a new [RenameRefactoring] in [refactoring] for the [Element] of
  /// the [SimpleIdentifier] at the given [search] pattern.
  void createRenameRefactoringAtString(String search) {
    var identifier = findNode.simple(search);
    var element = identifier.writeOrReadElement;
    if (element is PrefixElement) {
      element = getImportElement(identifier);
    }
    createRenameRefactoringForElement(element);
  }

  /// Creates a new [RenameRefactoring] in [refactoring] for [element].
  /// Fails if no [RenameRefactoring] can be created.
  void createRenameRefactoringForElement(Element element) {
    var workspace = RefactoringWorkspace(
      [driverFor(testFile)],
      searchEngine,
    );
    refactoring = RenameRefactoring(workspace, testAnalysisResult, element);
    expect(refactoring, isNotNull, reason: "No refactoring for '$element'.");
  }

  /// Returns the [Edit] with the given [id], maybe `null`.
  SourceEdit findEditById(String id) {
    for (var fileEdit in refactoringChange.edits) {
      for (var edit in fileEdit.edits) {
        if (edit.id == id) {
          return edit;
        }
      }
    }
    return null;
  }
}