move DartCompletionSorter to dart specific contributor

pkg/analysis_server/test/domain_completion_util.dart

Index: pkg/analysis_server/test/domain_completion_util.dart
diff --git a/pkg/analysis_server/test/domain_completion_util.dart b/pkg/analysis_server/test/domain_completion_util.dart
new file mode 100644
index 0000000000000000000000000000000000000000..29cff996eff2558c7915a984cd3847ec6b7cdbf1
--- /dev/null
+++ b/pkg/analysis_server/test/domain_completion_util.dart
@@ -0,0 +1,123 @@
+// 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.
+
+library test.domain.completion;
+
+import 'dart:async';
+
+import 'package:analysis_server/plugin/protocol/protocol.dart';
+import 'package:analysis_server/src/constants.dart';
+import 'package:analysis_server/src/domain_completion.dart';
+import 'package:analysis_server/src/provisional/completion/dart/completion_dart.dart';
+import 'package:analysis_server/src/services/index/index.dart' show Index;
+import 'package:analysis_server/src/services/index/local_memory_index.dart';
+import 'package:unittest/unittest.dart';
+
+import 'analysis_abstract.dart';
+import 'mocks.dart';
+
+class AbstractCompletionDomainTest extends AbstractAnalysisTest {
+  String completionId;
+  int completionOffset;
+  int replacementOffset;
+  int replacementLength;
+  List<CompletionSuggestion> suggestions = [];
+  bool suggestionsDone = false;
+
+  String addTestFile(String content, {int offset}) {
+    completionOffset = content.indexOf('^');
+    if (offset != null) {
+      expect(completionOffset, -1, reason: 'cannot supply offset and ^');
+      completionOffset = offset;
+      return super.addTestFile(content);
+    }
+    expect(completionOffset, isNot(equals(-1)), reason: 'missing ^');
+    int nextOffset = content.indexOf('^', completionOffset + 1);
+    expect(nextOffset, equals(-1), reason: 'too many ^');
+    return super.addTestFile(content.substring(0, completionOffset) +
+        content.substring(completionOffset + 1));
+  }
+
+  void assertHasResult(CompletionSuggestionKind kind, String completion,
+      {int relevance: DART_RELEVANCE_DEFAULT,
+      bool isDeprecated: false,
+      bool isPotential: false,
+      int selectionOffset}) {
+    var cs;
+    suggestions.forEach((s) {
+      if (s.completion == completion) {
+        if (cs == null) {
+          cs = s;
+        } else {
+          fail('expected exactly one $completion but found > 1');
+        }
+      }
+    });
+    if (cs == null) {
+      var completions = suggestions.map((s) => s.completion).toList();
+      fail('expected "$completion" but found\n $completions');
+    }
+    expect(cs.kind, equals(kind));
+    expect(cs.relevance, equals(relevance));
+    expect(cs.selectionOffset, selectionOffset ?? completion.length);
+    expect(cs.selectionLength, equals(0));
+    expect(cs.isDeprecated, equals(isDeprecated));
+    expect(cs.isPotential, equals(isPotential));
+  }
+
+  void assertNoResult(String completion) {
+    if (suggestions.any((cs) => cs.completion == completion)) {
+      fail('did not expect completion: $completion');
+    }
+  }
+
+  void assertValidId(String id) {
+    expect(id, isNotNull);
+    expect(id.isNotEmpty, isTrue);
+  }
+
+  @override
+  Index createIndex() {
+    return createLocalMemoryIndex();
+  }
+
+  Future getSuggestions() {
+    return waitForTasksFinished().then((_) {
+      Request request =
+          new CompletionGetSuggestionsParams(testFile, completionOffset)
+              .toRequest('0');
+      Response response = handleSuccessfulRequest(request);
+      completionId = response.id;
+      assertValidId(completionId);
+      return pumpEventQueue().then((_) {
+        expect(suggestionsDone, isTrue);
+      });
+    });
+  }
+
+  void processNotification(Notification notification) {
+    if (notification.event == COMPLETION_RESULTS) {
+      var params = new CompletionResultsParams.fromNotification(notification);
+      String id = params.id;
+      assertValidId(id);
+      if (id == completionId) {
+        expect(suggestionsDone, isFalse);
+        replacementOffset = params.replacementOffset;
+        replacementLength = params.replacementLength;
+        suggestionsDone = params.isLast;
+        expect(suggestionsDone, isNotNull);
+        suggestions = params.results;
+      }
+    } else if (notification.event == SERVER_ERROR) {
+      fail('server error: ${notification.toJson()}');
+    }
+  }
+
+  @override
+  void setUp() {
+    super.setUp();
+    createProject();
+    handler = new CompletionDomainHandler(server);
+  }
+}