improve import URI completions at EOF

pkg/analysis_server/test/services/completion/dart/uri_contributor_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.contributor.dart.importuri;
 
 import 'package:analysis_server/plugin/protocol/protocol.dart';
 import 'package:analysis_server/src/provisional/completion/dart/completion_dart.dart';
 import 'package:analysis_server/src/services/completion/dart/uri_contributor.dart';
 import 'package:analyzer/file_system/memory_file_system.dart';
@@ skipping 78 matching lines @@
 
   test_import2() async {
     addTestSource('import "^" import');
     await computeSuggestions();
     expect(replacementOffset, completionOffset);
     expect(replacementLength, 0);
     assertSuggest('dart:', csKind: CompletionSuggestionKind.IMPORT);
     assertSuggest('package:', csKind: CompletionSuggestionKind.IMPORT);
   }
 
+  test_import3() async {
+    addTestSource('import "^ import');
+    await computeSuggestions();
+    expect(replacementOffset, completionOffset);
+    expect(replacementLength, 7);
+    assertSuggest('dart:', csKind: CompletionSuggestionKind.IMPORT);
+    assertSuggest('package:', csKind: CompletionSuggestionKind.IMPORT);
+  }
+
   test_import_dart() async {
     addTestSource('import "d^" import');
     await computeSuggestions();
     expect(replacementOffset, completionOffset - 1);
     expect(replacementLength, 1);
     assertSuggest('dart:', csKind: CompletionSuggestionKind.IMPORT);
     assertSuggest('dart:core',
         csKind: CompletionSuggestionKind.IMPORT, relevance: DART_RELEVANCE_LOW);
     assertNotSuggested('dart:_internal');
     assertSuggest('dart:async', csKind: CompletionSuggestionKind.IMPORT);
@@ skipping 204 matching lines @@
 
   test_import_raw() async {
     addTestSource('import r"^" import');
     await computeSuggestions();
     expect(replacementOffset, completionOffset);
     expect(replacementLength, 0);
     assertSuggest('dart:', csKind: CompletionSuggestionKind.IMPORT);
     assertSuggest('package:', csKind: CompletionSuggestionKind.IMPORT);
   }
 
+  test_import_without_any_quotes() async {
+    addTestSource('import ^ import');
+    await computeSuggestions();
+    expect(replacementOffset, completionOffset);
+    expect(replacementLength, 0);
+    assertNoSuggestions();
+  }
+
+  test_import_without_any_quotes_eof() async {
+    addTestSource('import ^');
+    await computeSuggestions();
+    expect(replacementOffset, completionOffset);
+    expect(replacementLength, 0);
+    assertNoSuggestions();
+  }
+
+  test_import_without_closing_quote_eof() async {
+    addTestSource('import "^');
+    await computeSuggestions();
+    expect(replacementOffset, completionOffset);
+    expect(replacementLength, 0);
+    assertSuggest('dart:', csKind: CompletionSuggestionKind.IMPORT);
+    assertSuggest('package:', csKind: CompletionSuggestionKind.IMPORT);
+  }
+
+  test_import_without_closing_quote_eof2() async {
+    addTestSource('import "^d');
+    await computeSuggestions();
+    expect(replacementOffset, completionOffset);
+    expect(replacementLength, 1);
+    assertSuggest('dart:', csKind: CompletionSuggestionKind.IMPORT);
+    assertSuggest('package:', csKind: CompletionSuggestionKind.IMPORT);
+  }
+
+  test_import_without_closing_quote_eof3() async {
+    addTestSource('import "d^');
+    await computeSuggestions();
+    expect(replacementOffset, completionOffset - 1);
+    expect(replacementLength, 1);
+    assertSuggest('dart:', csKind: CompletionSuggestionKind.IMPORT);
+    assertSuggest('package:', csKind: CompletionSuggestionKind.IMPORT);
+  }
+
+  test_import_without_closing_quote_eof4() async {
+    addTestSource('import "d^"');
+    await computeSuggestions();
+    expect(replacementOffset, completionOffset - 1);
+    expect(replacementLength, 1);
+    assertSuggest('dart:', csKind: CompletionSuggestionKind.IMPORT);
+    assertSuggest('package:', csKind: CompletionSuggestionKind.IMPORT);
+  }
+
   test_outside_import() async {
     addTestSource('import ^"d" import');
     await computeSuggestions();
     assertNoSuggestions();
   }
 
   test_outside_import2() async {
     addTestSource('import "d"^ import');
     await computeSuggestions();
     assertNoSuggestions();
@@ skipping 231 matching lines @@
     assertNotSuggested('foo/');
     assertNotSuggested('foo/bar.dart');
     assertSuggest('../blat.dart', csKind: CompletionSuggestionKind.IMPORT);
   }
 }
 
 class _TestWinResourceProvider extends MemoryResourceProvider {
   @override
   Context get pathContext => windows;
 }