Resolve libraries against their canonical URI.

dart/tests/compiler/dart2js/library_resolution_test.dart

+// Copyright (c) 2014, 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.
+
+/// Check that relative URIs are resolved against the canonical name of a
+/// library. This only matters for dart:-libraries, so this test mocks up two
+/// dart:-libraries.
+
+import "dart:io";
+
+import "dart:async";
+
+import "memory_source_file_helper.dart";
+
+import "package:async_helper/async_helper.dart";
+
+import 'package:expect/expect.dart' show
+    Expect;
+
+import 'package:compiler/src/elements/elements.dart' show
+    LibraryElement;
+
+import 'package:compiler/src/dart2jslib.dart' show
+    MessageKind;
+
+import 'package:_internal/libraries.dart' show
+    DART2JS_PLATFORM,
+    LibraryInfo;
+
+const LibraryInfo mock1LibraryInfo = const LibraryInfo(
+    "mock1.dart",
+    category: "Shared",
+    documented: false,
+    platforms: DART2JS_PLATFORM);
+
+const LibraryInfo mock2LibraryInfo = const LibraryInfo(
+    "mock2.dart",
+    category: "Shared",
+    documented: false,
+    platforms: DART2JS_PLATFORM);
+
+class CustomCompiler extends Compiler {
+  final Map<String, LibraryInfo> customLibraryInfo;
+
+  CustomCompiler(
+      this.customLibraryInfo,
+      provider,
+      outputProvider,
+      handler,
+      libraryRoot,
+      packageRoot,
+      options,
+      environment)
+      : super(
+          provider,
+          outputProvider,
+          handler,
+          libraryRoot,
+          packageRoot,
+          options,
+          environment);
+
+  LibraryInfo lookupLibraryInfo(String name) {
+    if (name == "m_o_c_k_1") return mock1LibraryInfo;
+    if (name == "m_o_c_k_2") return mock2LibraryInfo;
+    return super.lookupLibraryInfo(name);
+  }
+}
+
+main() {
+  Uri sdkRoot = Uri.base.resolve("sdk/");
+  Uri packageRoot = Uri.base.resolve(Platform.packageRoot);
+
+  var provider = new MemorySourceFileProvider(MEMORY_SOURCE_FILES);
+  var handler = new FormattingDiagnosticHandler(provider);
+
+  outputProvider(String name, String extension) {
+    if (name != '') throw 'Attempt to output file "$name.$extension"';
+    return new NullSink('$name.$extension');
+  }
+
+  Future wrappedProvider(Uri uri) {
+    if (uri == sdkRoot.resolve('lib/mock1.dart')) {
+      return provider.readStringFromUri(Uri.parse('memory:mock1.dart'));
+    }
+    if (uri == sdkRoot.resolve('lib/mock2.dart')) {
+      return provider.readStringFromUri(Uri.parse('memory:mock2.dart'));
+    }
+    return provider.readStringFromUri(uri);
+  }
+
+  String expectedMessage =
+      MessageKind.LIBRARY_NOT_FOUND.message(
+          {'resolvedUri': 'dart:mock2.dart'}).computeMessage();
+
+  int actualMessageCount = 0;
+
+  wrappedHandler(
+      Uri uri, int begin, int end, String message, kind) {
+    if (message == expectedMessage) {
+      actualMessageCount++;
+    } else {
+      return handler(uri, begin, end, message, kind);
+    }
+  }
+
+  checkLibrary(LibraryElement library) {
+    Expect.equals(1, actualMessageCount);
+  }
+
+  Compiler compiler = new CustomCompiler(
+      {},
+      wrappedProvider,
+      outputProvider,
+      wrappedHandler,
+      sdkRoot,
+      packageRoot,
+      [],
+      {});
+
+  asyncStart();
+  compiler.libraryLoader.loadLibrary(Uri.parse("dart:m_o_c_k_1"))
+      .then(checkLibrary)
+      .then(asyncSuccess);
+}
+
+const Map MEMORY_SOURCE_FILES = const {
+  "mock1.dart": "library mock1; import 'mock2.dart';",
+  "mock2.dart": "library mock2;",
+};