add keyword suggestions

pkg/analysis_services/test/completion/keyword_computer_test.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.
+
+library test.services.completion.dart.keyword;
+
+import 'package:analysis_services/completion/completion_suggestion.dart';
+import 'package:analysis_services/src/completion/keyword_computer.dart';
+import 'package:analysis_testing/reflective_tests.dart';
+import 'package:analyzer/src/generated/scanner.dart';
+import 'package:unittest/unittest.dart';
+
+import 'completion_test_util.dart';
+
+main() {
+  groupSep = ' | ';
+  runReflectiveTests(KeywordComputerTest);
+}
+
+@ReflectiveTestCase()
+class KeywordComputerTest extends AbstractCompletionTest {
+
+  void assertSuggestKeywords(List<String> names) {
+    Keyword.values.forEach((Keyword keyword) {
+      if (names.contains(keyword.syntax)) {
+        assertSuggest(CompletionSuggestionKind.KEYWORD, keyword.syntax);
+      } else {
+        assertNotSuggested(keyword.syntax);
+      }
+    });
+  }
+
+  @override
+  void setUp() {
+    super.setUp();
+    computer = new KeywordComputer();
+  }
+
+  test_class_extends() {
+    addTestSource('class A ^');
+    expect(computeFast(), isTrue);
+    assertSuggestKeywords(['extends', 'implements', 'with']);
+  }
+
+  test_class_extends_name() {
+    addTestSource('class A extends ^');
+    expect(computeFast(), isTrue);
+    assertSuggestKeywords([]);
+  }
+
+  test_class_name() {
+    addTestSource('class ^');
+    expect(computeFast(), isTrue);
+    assertSuggestKeywords([]);
+  }
+
+  test_empty() {
+    addTestSource('^');
+    expect(computeFast(), isTrue);
+    assertSuggestKeywords(
+        [
+            'abstract',
+            'class',
+            'const',
+            'export',
+            'final',
+            'import',
+            'library',
+            'part',
+            'typedef',
+            'var']);
+  }
+}