Ignore files that are hidden by generated files.

pkg/analyzer/test/src/dart/analysis/driver_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.driver;
 
 import 'dart:async';
 import 'dart:convert';
 
 import 'package:analyzer/dart/ast/ast.dart';
@@ skipping 10 matching lines @@
 import 'package:analyzer/src/dart/analysis/top_level_declaration.dart';
 import 'package:analyzer/src/error/codes.dart';
 import 'package:analyzer/src/generated/engine.dart' show AnalysisOptionsImpl;
 import 'package:analyzer/src/generated/sdk.dart';
 import 'package:analyzer/src/generated/source.dart';
 import 'package:analyzer/src/summary/idl.dart';
 import 'package:convert/convert.dart';
 import 'package:crypto/crypto.dart';
 import 'package:test/test.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';
+import 'package:typed_mock/typed_mock.dart';
 
 import '../../context/mock_sdk.dart';
 import 'base.dart';
 
 main() {
   defineReflectiveSuite(() {
     defineReflectiveTests(AnalysisDriverTest);
     defineReflectiveTests(AnalysisDriverSchedulerTest);
   });
 }
@@ skipping 585 matching lines @@
 library lib;
 part 'foo.dart';
 ''');
 
     AnalysisResult result = await driver.getResult(testFile);
     List<AnalysisError> errors = result.errors;
     expect(errors, hasLength(1));
     expect(errors[0].errorCode, CompileTimeErrorCode.URI_DOES_NOT_EXIST);
   }
 
+  test_generatedFile() async {
+    Uri uri = Uri.parse('package:aaa/foo.dart');
+    String templatePath = _p('/aaa/lib/foo.dart');
+    String generatedPath = _p('/generated/aaa/lib/foo.dart');
+
+    provider.newFile(
+        templatePath,
+        r'''
+a() {}
+b() {}
+''');
+
+    provider.newFile(
+        generatedPath,
+        r'''
+aaa() {}
+bbb() {}
+''');
+
+    Source generatedSource = new _SourceMock();
+    when(generatedSource.uri).thenReturn(uri);
+    when(generatedSource.fullName).thenReturn(generatedPath);
+
+    when(generatedUriResolver.resolveAbsolute(uri, uri))
+        .thenReturn(generatedSource);
+    when(generatedUriResolver.restoreAbsolute(anyObject))
+        .thenInvoke((Source source) {
+      String path = source.fullName;
+      if (path == templatePath || path == generatedPath) {
+        return uri;
+      } else {
+        return null;
+      }
+    });
+
+    driver.addFile(templatePath);
+
+    await driver.waitForIdle();
+    expect(allExceptions, isEmpty);
+    expect(allResults, isEmpty);
+
+    var result = await driver.getResult(templatePath);
+    expect(result, isNull);
+    expect(allExceptions, isEmpty);
+    expect(allResults, isEmpty);
+
+    driver.priorityFiles = [templatePath];
+    driver.changeFile(templatePath);
+    await driver.waitForIdle();
+    expect(allExceptions, isEmpty);
+    expect(allResults, isEmpty);
+
+    expect(driver.knownFiles, isNot(contains(templatePath)));
+  }
+
   test_getFilesReferencingName() async {
     var a = _p('/test/bin/a.dart');
     var b = _p('/test/bin/b.dart');
     var c = _p('/test/bin/c.dart');
     var d = _p('/test/bin/d.dart');
     var e = _p('/test/bin/e.dart');
 
     provider.newFile(a, 'class A {}');
     provider.newFile(b, "import 'a.dart'; A a;");
     provider.newFile(c, "import 'a.dart'; var a = new A();");
@@ skipping 1183 matching lines @@
 
   /**
    * Return the [provider] specific path for the given Posix [path].
    */
   String _p(String path) => provider.convertPath(path);
 
   static String _md5(String content) {
     return hex.encode(md5.convert(UTF8.encode(content)).bytes);
   }
 }
+
+class _SourceMock extends TypedMock implements Source {}