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packages/analyzer/test/generated/source_factory_test.dart

Index: packages/analyzer/test/generated/source_factory_test.dart
diff --git a/packages/analyzer/test/generated/source_factory_test.dart b/packages/analyzer/test/generated/source_factory_test.dart
new file mode 100644
index 0000000000000000000000000000000000000000..c16f1f8f6e31aea1429bf116fc35cd25d3c503db
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+++ b/packages/analyzer/test/generated/source_factory_test.dart
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+// 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 analyzer.test.generated.source_factory;
+
+import 'dart:convert';
+
+import 'package:analyzer/file_system/file_system.dart';
+import 'package:analyzer/file_system/memory_file_system.dart';
+import 'package:analyzer/source/package_map_resolver.dart';
+import 'package:analyzer/src/generated/java_core.dart';
+import 'package:analyzer/src/generated/java_engine_io.dart';
+import 'package:analyzer/src/generated/java_io.dart';
+import 'package:analyzer/src/generated/source.dart';
+import 'package:analyzer/src/generated/source_io.dart';
+import 'package:analyzer/src/generated/utilities_dart.dart' as utils;
+import 'package:package_config/packages.dart';
+import 'package:package_config/packages_file.dart' as pkgfile show parse;
+import 'package:package_config/src/packages_impl.dart';
+import 'package:path/path.dart';
+import 'package:unittest/unittest.dart';
+
+import '../reflective_tests.dart';
+import '../utils.dart';
+import 'test_support.dart';
+
+main() {
+  initializeTestEnvironment();
+  runReflectiveTests(SourceFactoryTest);
+  runPackageMapTests();
+}
+
+Source createSource({String path, String uri}) =>
+    //TODO(pquitslund): find some way to pass an actual URI into source creation
+    new MemoryResourceProvider()
+        .getFile(path)
+        .createSource(uri != null ? Uri.parse(uri) : null);
+
+void runPackageMapTests() {
+  final Uri baseUri = new Uri.file('test/base');
+  final List<UriResolver> testResolvers = [new FileUriResolver()];
+
+  Packages createPackageMap(Uri base, String configFileContents) {
+    List<int> bytes = UTF8.encode(configFileContents);
+    Map<String, Uri> map = pkgfile.parse(bytes, base);
+    return new MapPackages(map);
+  }
+
+  Map<String, List<Folder>> getPackageMap(String config) {
+    Packages packages = createPackageMap(baseUri, config);
+    SourceFactory factory = new SourceFactory(testResolvers, packages);
+    return factory.packageMap;
+  }
+
+  String resolvePackageUri(
+      {String uri,
+      String config,
+      Source containingSource,
+      UriResolver customResolver}) {
+    Packages packages = createPackageMap(baseUri, config);
+    List<UriResolver> resolvers = testResolvers.toList();
+    if (customResolver != null) {
+      resolvers.add(customResolver);
+    }
+    SourceFactory factory = new SourceFactory(resolvers, packages);
+    Source source = factory.resolveUri(containingSource, uri);
+    return source != null ? source.fullName : null;
+  }
+
+  Uri restorePackageUri(
+      {Source source, String config, UriResolver customResolver}) {
+    Packages packages = createPackageMap(baseUri, config);
+    List<UriResolver> resolvers = testResolvers.toList();
+    if (customResolver != null) {
+      resolvers.add(customResolver);
+    }
+    SourceFactory factory = new SourceFactory(resolvers, packages);
+    return factory.restoreUri(source);
+  }
+
+  group('SourceFactoryTest', () {
+    group('package mapping', () {
+      group('resolveUri', () {
+        test('URI in mapping', () {
+          String uri = resolvePackageUri(
+              config: '''
+unittest:file:///home/somebody/.pub/cache/unittest-0.9.9/lib/
+async:file:///home/somebody/.pub/cache/async-1.1.0/lib/
+quiver:file:///home/somebody/.pub/cache/quiver-1.2.1/lib
+''',
+              uri: 'package:unittest/unittest.dart');
+          expect(
+              uri,
+              equals(
+                  '/home/somebody/.pub/cache/unittest-0.9.9/lib/unittest.dart'));
+        });
+        test('URI in mapping (no scheme)', () {
+          String uri = resolvePackageUri(
+              config: '''
+unittest:/home/somebody/.pub/cache/unittest-0.9.9/lib/
+async:/home/somebody/.pub/cache/async-1.1.0/lib/
+quiver:/home/somebody/.pub/cache/quiver-1.2.1/lib
+''',
+              uri: 'package:unittest/unittest.dart');
+          expect(
+              uri,
+              equals(
+                  '/home/somebody/.pub/cache/unittest-0.9.9/lib/unittest.dart'));
+        });
+        test('URI not in mapping', () {
+          String uri = resolvePackageUri(
+              config: 'unittest:/home/somebody/.pub/cache/unittest-0.9.9/lib/',
+              uri: 'package:foo/foo.dart');
+          expect(uri, isNull);
+        });
+        test('Non-package URI', () {
+          var testResolver = new CustomUriResolver(uriPath: 'test_uri');
+          String uri = resolvePackageUri(
+              config: 'unittest:/home/somebody/.pub/cache/unittest-0.9.9/lib/',
+              uri: 'custom:custom.dart',
+              customResolver: testResolver);
+          expect(uri, testResolver.uriPath);
+        });
+        test('Invalid URI', () {
+          // TODO(pquitslund): fix clients to handle errors appropriately
+          //   CLI: print message 'invalid package file format'
+          //   SERVER: best case tell user somehow and recover...
+          expect(
+              () => resolvePackageUri(
+                  config: 'foo:<:&%>', uri: 'package:foo/bar.dart'),
+              throwsA(new isInstanceOf('FormatException')));
+        });
+        test('Valid URI that cannot be further resolved', () {
+          String uri = resolvePackageUri(
+              config: 'foo:http://www.google.com', uri: 'package:foo/bar.dart');
+          expect(uri, isNull);
+        });
+        test('Relative URIs', () {
+          Source containingSource = createSource(
+              path: '/foo/bar/baz/foo.dart', uri: 'package:foo/foo.dart');
+          String uri = resolvePackageUri(
+              config: 'foo:/foo/bar/baz',
+              uri: 'bar.dart',
+              containingSource: containingSource);
+          expect(uri, isNotNull);
+          expect(uri, equals('/foo/bar/baz/bar.dart'));
+        });
+      });
+      group('restoreUri', () {
+        test('URI in mapping', () {
+          Uri uri = restorePackageUri(
+              config: '''
+unittest:/home/somebody/.pub/cache/unittest-0.9.9/lib/
+async:/home/somebody/.pub/cache/async-1.1.0/lib/
+quiver:/home/somebody/.pub/cache/quiver-1.2.1/lib
+''',
+              source: new FileBasedSource(FileUtilities2.createFile(
+                  '/home/somebody/.pub/cache/unittest-0.9.9/lib/unittest.dart')));
+          expect(uri, isNotNull);
+          expect(uri.toString(), equals('package:unittest/unittest.dart'));
+        });
+      });
+      group('packageMap', () {
+        test('non-file URIs filtered', () {
+          Map<String, List<Folder>> map = getPackageMap('''
+quiver:/home/somebody/.pub/cache/quiver-1.2.1/lib
+foo:http://www.google.com
+''');
+          expect(map.keys, unorderedEquals(['quiver']));
+        });
+      });
+    });
+  });
+
+  group('URI utils', () {
+    group('URI', () {
+      test('startsWith', () {
+        expect(utils.startsWith(Uri.parse('/foo/bar/'), Uri.parse('/foo/')),
+            isTrue);
+        expect(utils.startsWith(Uri.parse('/foo/bar/'), Uri.parse('/foo/bar/')),
+            isTrue);
+        expect(utils.startsWith(Uri.parse('/foo/bar'), Uri.parse('/foo/b')),
+            isFalse);
+        // Handle odd URIs (https://github.com/dart-lang/sdk/issues/24126)
+        expect(utils.startsWith(Uri.parse('/foo/bar'), Uri.parse('')), isFalse);
+        expect(utils.startsWith(Uri.parse(''), Uri.parse('/foo/bar')), isFalse);
+      });
+    });
+  });
+}
+
+class CustomUriResolver extends UriResolver {
+  String uriPath;
+  CustomUriResolver({this.uriPath});
+
+  @override
+  Source resolveAbsolute(Uri uri, [Uri actualUri]) =>
+      createSource(path: uriPath);
+}
+
+@reflectiveTest
+class SourceFactoryTest {
+  void test_creation() {
+    expect(new SourceFactory([]), isNotNull);
+  }
+
+  void test_fromEncoding_invalidUri() {
+    SourceFactory factory = new SourceFactory([]);
+    expect(() => factory.fromEncoding("<:&%>"),
+        throwsA(new isInstanceOf<IllegalArgumentException>()));
+  }
+
+  void test_fromEncoding_noResolver() {
+    SourceFactory factory = new SourceFactory([]);
+    expect(() => factory.fromEncoding("foo:/does/not/exist.dart"),
+        throwsA(new isInstanceOf<IllegalArgumentException>()));
+  }
+
+  void test_fromEncoding_valid() {
+    String encoding = "file:///does/not/exist.dart";
+    SourceFactory factory = new SourceFactory(
+        [new UriResolver_SourceFactoryTest_test_fromEncoding_valid(encoding)]);
+    expect(factory.fromEncoding(encoding), isNotNull);
+  }
+
+  void test_resolveUri_absolute() {
+    UriResolver_absolute resolver = new UriResolver_absolute();
+    SourceFactory factory = new SourceFactory([resolver]);
+    factory.resolveUri(null, "dart:core");
+    expect(resolver.invoked, isTrue);
+  }
+
+  void test_resolveUri_nonAbsolute_absolute() {
+    SourceFactory factory =
+        new SourceFactory([new UriResolver_nonAbsolute_absolute()]);
+    String absolutePath = "/does/not/matter.dart";
+    Source containingSource =
+        new FileBasedSource(FileUtilities2.createFile("/does/not/exist.dart"));
+    Source result = factory.resolveUri(containingSource, absolutePath);
+    expect(result.fullName,
+        FileUtilities2.createFile(absolutePath).getAbsolutePath());
+  }
+
+  void test_resolveUri_nonAbsolute_relative() {
+    SourceFactory factory =
+        new SourceFactory([new UriResolver_nonAbsolute_relative()]);
+    Source containingSource =
+        new FileBasedSource(FileUtilities2.createFile("/does/not/have.dart"));
+    Source result = factory.resolveUri(containingSource, "exist.dart");
+    expect(result.fullName,
+        FileUtilities2.createFile("/does/not/exist.dart").getAbsolutePath());
+  }
+
+  void test_resolveUri_nonAbsolute_relative_package() {
+    MemoryResourceProvider provider = new MemoryResourceProvider();
+    Context context = provider.pathContext;
+    String packagePath =
+        context.joinAll([context.separator, 'path', 'to', 'package']);
+    String libPath = context.joinAll([packagePath, 'lib']);
+    String dirPath = context.joinAll([libPath, 'dir']);
+    String firstPath = context.joinAll([dirPath, 'first.dart']);
+    String secondPath = context.joinAll([dirPath, 'second.dart']);
+
+    provider.newFolder(packagePath);
+    Folder libFolder = provider.newFolder(libPath);
+    provider.newFolder(dirPath);
+    File firstFile = provider.newFile(firstPath, '');
+    provider.newFile(secondPath, '');
+
+    PackageMapUriResolver resolver = new PackageMapUriResolver(provider, {
+      'package': [libFolder]
+    });
+    SourceFactory factory = new SourceFactory([resolver]);
+    Source librarySource =
+        firstFile.createSource(Uri.parse('package:package/dir/first.dart'));
+
+    Source result = factory.resolveUri(librarySource, 'second.dart');
+    expect(result, isNotNull);
+    expect(result.fullName, secondPath);
+    expect(result.uri.toString(), 'package:package/dir/second.dart');
+  }
+
+  void test_restoreUri() {
+    JavaFile file1 = FileUtilities2.createFile("/some/file1.dart");
+    JavaFile file2 = FileUtilities2.createFile("/some/file2.dart");
+    Source source1 = new FileBasedSource(file1);
+    Source source2 = new FileBasedSource(file2);
+    Uri expected1 = parseUriWithException("file:///my_file.dart");
+    SourceFactory factory =
+        new SourceFactory([new UriResolver_restoreUri(source1, expected1)]);
+    expect(factory.restoreUri(source1), same(expected1));
+    expect(factory.restoreUri(source2), same(null));
+  }
+}
+
+class UriResolver_absolute extends UriResolver {
+  bool invoked = false;
+
+  UriResolver_absolute();
+
+  @override
+  Source resolveAbsolute(Uri uri, [Uri actualUri]) {
+    invoked = true;
+    return null;
+  }
+}
+
+class UriResolver_nonAbsolute_absolute extends UriResolver {
+  @override
+  Source resolveAbsolute(Uri uri, [Uri actualUri]) {
+    return new FileBasedSource(new JavaFile.fromUri(uri), actualUri);
+  }
+}
+
+class UriResolver_nonAbsolute_relative extends UriResolver {
+  @override
+  Source resolveAbsolute(Uri uri, [Uri actualUri]) {
+    return new FileBasedSource(new JavaFile.fromUri(uri), actualUri);
+  }
+}
+
+class UriResolver_restoreUri extends UriResolver {
+  Source source1;
+  Uri expected1;
+  UriResolver_restoreUri(this.source1, this.expected1);
+
+  @override
+  Source resolveAbsolute(Uri uri, [Uri actualUri]) => null;
+
+  @override
+  Uri restoreAbsolute(Source source) {
+    if (identical(source, source1)) {
+      return expected1;
+    }
+    return null;
+  }
+}
+
+class UriResolver_SourceFactoryTest_test_fromEncoding_valid
+    extends UriResolver {
+  String encoding;
+  UriResolver_SourceFactoryTest_test_fromEncoding_valid(this.encoding);
+
+  @override
+  Source resolveAbsolute(Uri uri, [Uri actualUri]) {
+    if (uri.toString() == encoding) {
+      return new TestSource();
+    }
+    return null;
+  }
+}