Create html if needed in server mode

lib/src/testing.dart

 // Copyright (c) 2015, 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 dev_compiler.src.testing;
 
 import 'package:analyzer/src/generated/ast.dart';
 import 'package:analyzer/src/generated/element.dart';
 import 'package:analyzer/src/generated/engine.dart' show TimestampedData;
 import 'package:analyzer/src/generated/source.dart';
 import 'package:logging/logging.dart';
 import 'package:path/path.dart' as path;
 import 'package:source_span/source_span.dart';
 import 'package:unittest/unittest.dart';
 
 import 'package:dev_compiler/src/checker/dart_sdk.dart'
     show mockSdkSources, dartSdkDirectory;
 import 'package:dev_compiler/src/checker/resolver.dart' show TypeResolver;
 import 'package:dev_compiler/src/utils.dart';
+import 'package:dev_compiler/src/in_memory.dart';
 import 'package:dev_compiler/src/info.dart';
 import 'package:dev_compiler/src/options.dart';
 import 'package:dev_compiler/src/report.dart';
 import 'package:dev_compiler/config.dart';
 import 'package:dev_compiler/devc.dart' show Compiler;
 
 import 'dependency_graph.dart' show runtimeFilesForServerMode;
 
 /// Run the checker on a program with files contents as indicated in
 /// [testFiles].
@@ skipping 24 matching lines @@
     covariantGenerics: true, relaxedCasts: true,
     inferDownwards: RulesOptions.inferDownwardsDefault,
     inferFromOverrides: ResolverOptions.inferFromOverridesDefault,
     inferTransitively: ResolverOptions.inferTransitivelyDefault,
     nonnullableTypes: TypeOptions.NONNULLABLE_TYPES,
     wrapClosures: RulesOptions.wrapClosuresDefault}) {
   expect(testFiles.containsKey('/main.dart'), isTrue,
       reason: '`/main.dart` is missing in testFiles');
 
   // Create a resolver that can load test files from memory.
-  var testUriResolver = new TestUriResolver(testFiles);
+  var testUriResolver = new InMemoryUriResolver(testFiles);
   var options = new CompilerOptions(
       allowConstCasts: allowConstCasts,
       covariantGenerics: covariantGenerics,
       relaxedCasts: relaxedCasts,
       inferDownwards: inferDownwards,
       inferFromOverrides: inferFromOverrides,
       inferTransitively: inferTransitively,
       nonnullableTypes: nonnullableTypes,
       wrapClosures: wrapClosures,
       useMockSdk: sdkDir == null,
       dartSdkPath: sdkDir,
       runtimeDir: '/dev_compiler_runtime/',
       entryPointFile: '/main.dart');
   var resolver = sdkDir == null
       ? new TypeResolver.fromMock(mockSdkSources, options,
           otherResolvers: [testUriResolver])
       : new TypeResolver.fromDir(sdkDir, options,
           otherResolvers: [testUriResolver]);
 
   // Run the checker on /main.dart.
   var mainFile = new Uri.file('/main.dart');
   var checkExpectations = reporter == null;
   if (reporter == null) reporter = new TestReporter();
-  var results = new Compiler(options, resolver, reporter).run();
+  var results =
+      new Compiler(options, resolver: resolver, reporter: reporter).run();
 
   // Extract expectations from the comments in the test files.
   var expectedErrors = <AstNode, List<_ErrorExpectation>>{};
   var visitor = new _ErrorMarkerVisitor(expectedErrors);
   var initialLibrary =
       resolver.context.getLibraryElement(testUriResolver.files[mainFile]);
   for (var lib in reachableLibraries(initialLibrary)) {
     for (var unit in lib.units) {
       unit.unit.accept(visitor);
     }
@@ skipping 83 matching lines @@
 }
 
 String _messageWithSpan(StaticInfo info) {
   var span = _spanFor(info.node);
   var level = info.level.name.toLowerCase();
   return '$level: ${span.message(info.message, color: colorOf(level))}';
 }
 
 SourceSpan _spanFor(AstNode node) {
   var root = node.root as CompilationUnit;
-  TestSource source = (root.element as CompilationUnitElementImpl).source;
+  InMemorySource source = (root.element as CompilationUnitElementImpl).source;
   return source.spanFor(node);
 }
 
 /// Visitor that extracts expected errors from comments.
 class _ErrorMarkerVisitor extends UnifyingAstVisitor {
   Map<AstNode, List<_ErrorExpectation>> expectedErrors;
 
   _ErrorMarkerVisitor(this.expectedErrors);
 
   visitNode(AstNode node) {
@@ skipping 60 matching lines @@
     expect(tokens[1], "should", reason: 'invalid error descriptor');
     expect(tokens[2], "be", reason: 'invalid error descriptor');
     if (tokens[0] == "pass") return null;
     // TODO(leafp) For now, we just use whatever the current expectation is,
     // eventually we could do more automated reporting here.
     return _parse(tokens[0]);
   }
 
   String toString() => '$level $type';
 }
-
-/// Uri resolver that can load test files from memory.
-class TestUriResolver extends UriResolver {
-  final Map<Uri, TestSource> files = <Uri, TestSource>{};
-
-  /// Whether to represent a non-existing file with a [TestSource] (default
-  /// behavior from analyzer), or to use null (possible when overriding the
-  /// package-url-resolvers.)
-  final bool representNonExistingFiles;
-
-  TestUriResolver(Map<String, String> allFiles,
-      {this.representNonExistingFiles: true}) {
-    allFiles.forEach((key, value) {
-      var uri = key.startsWith('package:') ? Uri.parse(key) : new Uri.file(key);
-      files[uri] = new TestSource(uri, value);
-    });
-
-    runtimeFilesForServerMode.forEach((filepath) {
-      var uri = Uri.parse('/dev_compiler_runtime/$filepath');
-      files[uri] = new TestSource(uri, '/* test contents of $filepath */');
-    });
-  }
-
-  Source resolveAbsolute(Uri uri) {
-    if (uri.scheme != 'file' && uri.scheme != 'package') return null;
-    if (!representNonExistingFiles) return files[uri];
-    return files.putIfAbsent(uri, () => new TestSource(uri, null));
-  }
-}
-
-class TestContents implements TimestampedData<String> {
-  int modificationTime;
-  String data;
-
-  TestContents(this.modificationTime, this.data);
-}
-
-/// An in memory source file.
-class TestSource implements Source {
-  final Uri uri;
-  TestContents contents;
-  final SourceFile _file;
-  final UriKind uriKind;
-
-  TestSource(uri, contents)
-      : uri = uri,
-        contents = new TestContents(1, contents),
-        _file = contents != null ? new SourceFile(contents, url: uri) : null,
-        uriKind = uri.scheme == 'file' ? UriKind.FILE_URI : UriKind.PACKAGE_URI;
-
-  bool exists() => contents.data != null;
-
-  Source get source => this;
-
-  String _encoding;
-  String get encoding => _encoding != null ? _encoding : (_encoding = '$uri');
-
-  String get fullName => uri.path;
-
-  int get modificationStamp => contents.modificationTime;
-  String get shortName => path.basename(uri.path);
-
-  operator ==(other) => other is TestSource && uri == other.uri;
-  int get hashCode => uri.hashCode;
-  bool get isInSystemLibrary => false;
-
-  Uri resolveRelativeUri(Uri relativeUri) => uri.resolveUri(relativeUri);
-
-  SourceSpan spanFor(AstNode node) {
-    final begin = node is AnnotatedNode
-        ? node.firstTokenAfterCommentAndMetadata.offset
-        : node.offset;
-    return _file.span(begin, node.end);
-  }
-
-  String toString() => '[$runtimeType: $uri]';
-}