anchor.diff:  }
   ''');
   
  -    driverFor(testFilePath).changeFile(testFilePath);
  +    driverFor(testFilePathPlatform).changeFile(testFilePathPlatform);
       await resolveTestCode(r'''
   class A {
     factory A() =;
  
positive.code: }
  ''');
  
      driverFor(testFilePath).changeFile(testFilePath);
      await resolveTestCode(r'''
  class A {
    factory A() =
  
negative.code: 
  @reflectiveTest
  class AnalysisDriverCachingTest extends PubPackageResolutionTest {
    String get testFilePathPlatform => convertPath(testFilePath);
  
    List<Set<String>> get _linkedCycles {
      var driver = driverFor(testFilePath);
      return driver.test.libraryContext.linkedCycles;
  