Check for missing elements (issue 26987)

pkg/analyzer/test/generated/hint_code_test.dart

 // Copyright (c) 2016, 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 analyzer.test.generated.hint_code_test;
 
 import 'package:analyzer/src/generated/engine.dart';
 import 'package:analyzer/src/generated/error.dart';
+import 'package:analyzer/src/generated/parser.dart';
 import 'package:analyzer/src/generated/source_io.dart';
 import 'package:unittest/unittest.dart';
 
 import '../reflective_tests.dart';
 import '../utils.dart';
 import 'analysis_context_factory.dart';
 import 'resolver_test_case.dart';
 
 main() {
   initializeTestEnvironment();
   runReflectiveTests(HintCodeTest);
 }
 
 @reflectiveTest
 class HintCodeTest extends ResolverTestCase {
-  void fail_isInt() {
-    Source source = addSource("var v = 1 is int;");
-    computeLibrarySourceErrors(source);
-    assertErrors(source, [HintCode.IS_INT]);
-    verify([source]);
-  }
-
-  void fail_isNotInt() {
-    Source source = addSource("var v = 1 is! int;");
-    computeLibrarySourceErrors(source);
-    assertErrors(source, [HintCode.IS_NOT_INT]);
-    verify([source]);
-  }
-
-  void fail_overrideEqualsButNotHashCode() {
-    Source source = addSource(r'''
-class A {
-  bool operator ==(x) {}
-}''');
-    computeLibrarySourceErrors(source);
-    assertErrors(source, [HintCode.OVERRIDE_EQUALS_BUT_NOT_HASH_CODE]);
-    verify([source]);
-  }
-
-  void fail_unusedImport_as_equalPrefixes() {
-    // See todo at ImportsVerifier.prefixElementMap.
-    Source source = addSource(r'''
-library L;
-import 'lib1.dart' as one;
-import 'lib2.dart' as one;
-one.A a;''');
-    Source source2 = addNamedSource(
-        "/lib1.dart",
-        r'''
-library lib1;
-class A {}''');
-    Source source3 = addNamedSource(
-        "/lib2.dart",
-        r'''
-library lib2;
-class B {}''');
-    computeLibrarySourceErrors(source);
-    assertErrors(source, [HintCode.UNUSED_IMPORT]);
-    assertNoErrors(source2);
-    assertNoErrors(source3);
-    verify([source, source2, source3]);
-  }
-
   @override
   void reset() {
     analysisContext2 = AnalysisContextFactory.contextWithCoreAndPackages({
       'package:meta/meta.dart': r'''
 library meta;
 
 const _Factory factory = const _Factory();
 const _Literal literal = const _Literal();
 const _MustCallSuper mustCallSuper = const _MustCallSuper();
 const _Override override = const _Override();
@@ skipping 1637 matching lines @@
   void test_isDouble() {
     AnalysisOptionsImpl options = new AnalysisOptionsImpl();
     options.dart2jsHint = true;
     resetWithOptions(options);
     Source source = addSource("var v = 1 is double;");
     computeLibrarySourceErrors(source);
     assertErrors(source, [HintCode.IS_DOUBLE]);
     verify([source]);
   }
 
+  @failingTest
+  void test_isInt() {
+    Source source = addSource("var v = 1 is int;");
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.IS_INT]);
+    verify([source]);
+  }
+
   void test_isNotDouble() {
     AnalysisOptionsImpl options = new AnalysisOptionsImpl();
     options.dart2jsHint = true;
     resetWithOptions(options);
     Source source = addSource("var v = 1 is! double;");
     computeLibrarySourceErrors(source);
     assertErrors(source, [HintCode.IS_NOT_DOUBLE]);
     verify([source]);
   }
 
+  @failingTest
+  void test_isNotInt() {
+    Source source = addSource("var v = 1 is! int;");
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.IS_NOT_INT]);
+    verify([source]);
+  }
+
   void test_js_lib_OK() {
     Source source = addSource(r'''
 @JS()
 library foo;
 
 import 'package:js/js.dart';
 
 @JS()
 class A { }
 ''');
     computeLibrarySourceErrors(source);
     assertNoErrors(source);
     verify([source]);
   }
 
-  void test_missing_js_lib_on_class_decl() {
+  void test_missingJsLibAnnotation_class() {
     Source source = addSource(r'''
 library foo;
 
 import 'package:js/js.dart';
 
 @JS()
 class A { }
 ''');
     computeLibrarySourceErrors(source);
     assertErrors(source, [HintCode.MISSING_JS_LIB_ANNOTATION]);
     verify([source]);
   }
 
-  void test_missing_js_lib_on_function() {
+  void test_missingJsLibAnnotation_externalField() {
+    // https://github.com/dart-lang/sdk/issues/26987
+    Source source = addSource(r'''
+import 'package:js/js.dart';
+
+@JS()
+external dynamic exports;
+''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source,
+        [ParserErrorCode.EXTERNAL_FIELD, HintCode.MISSING_JS_LIB_ANNOTATION]);
+    verify([source]);
+  }
+
+  void test_missingJsLibAnnotation_function() {
     Source source = addSource(r'''
 library foo;
 
 import 'package:js/js.dart';
 
 @JS('acxZIndex')
 set _currentZIndex(int value) { }
 ''');
     computeLibrarySourceErrors(source);
     assertErrors(source, [HintCode.MISSING_JS_LIB_ANNOTATION]);
     verify([source]);
   }
 
-  void test_missing_js_lib_on_member() {
+  void test_missingJsLibAnnotation_method() {
     Source source = addSource(r'''
 library foo;
 
 import 'package:js/js.dart';
 
 class A {
   @JS()
   void a() { }
 }
 ''');
     computeLibrarySourceErrors(source);
     assertErrors(source, [HintCode.MISSING_JS_LIB_ANNOTATION]);
     verify([source]);
   }
 
+  void test_missingJsLibAnnotation_variable() {
+    Source source = addSource(r'''
+import 'package:js/js.dart';
+
+@JS()
+dynamic variable;
+''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.MISSING_JS_LIB_ANNOTATION]);
+    verify([source]);
+  }
+
   void test_missingReturn_async() {
     Source source = addSource('''
 import 'dart:async';
 Future<int> f() async {}
 ''');
     computeLibrarySourceErrors(source);
     assertErrors(source, [HintCode.MISSING_RETURN]);
     verify([source]);
   }
 
@@ skipping 232 matching lines @@
     Source source = addSource(r'''
 m(x) {
   while (x?.a) {}
 }
 ''');
     computeLibrarySourceErrors(source);
     assertErrors(source, [HintCode.NULL_AWARE_IN_CONDITION]);
     verify([source]);
   }
 
+  @failingTest
+  void test_overrideEqualsButNotHashCode() {
+    Source source = addSource(r'''
+class A {
+  bool operator ==(x) {}
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.OVERRIDE_EQUALS_BUT_NOT_HASH_CODE]);
+    verify([source]);
+  }
+
   void test_overrideOnNonOverridingField_invalid() {
     Source source = addSource(r'''
 library dart.core;
 const override = null;
 class A {
 }
 class B extends A {
   @override
   final int m = 1;
 }''');
@@ skipping 1444 matching lines @@
         "/lib1.dart",
         r'''
 library lib1;
 class A {}''');
     computeLibrarySourceErrors(source);
     assertErrors(source, [HintCode.UNUSED_IMPORT]);
     assertNoErrors(source2);
     verify([source, source2]);
   }
 
+  @failingTest
+  void test_unusedImport_as_equalPrefixes() {
+    // See todo at ImportsVerifier.prefixElementMap.
+    Source source = addSource(r'''
+library L;
+import 'lib1.dart' as one;
+import 'lib2.dart' as one;
+one.A a;''');
+    Source source2 = addNamedSource(
+        "/lib1.dart",
+        r'''
+library lib1;
+class A {}''');
+    Source source3 = addNamedSource(
+        "/lib2.dart",
+        r'''
+library lib2;
+class B {}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.UNUSED_IMPORT]);
+    assertNoErrors(source2);
+    assertNoErrors(source3);
+    verify([source, source2, source3]);
+  }
+
   void test_unusedImport_hide() {
     Source source = addSource(r'''
 library L;
 import 'lib1.dart';
 import 'lib1.dart' hide A;
 A a;''');
     Source source2 = addNamedSource(
         "/lib1.dart",
         r'''
 library lib1;
@@ skipping 370 matching lines @@
   n() {
     var a = m(), b = m();
   }
 }''');
     computeLibrarySourceErrors(source);
     assertErrors(
         source, [HintCode.USE_OF_VOID_RESULT, HintCode.USE_OF_VOID_RESULT]);
     verify([source]);
   }
 }