Switch FE to use the libraries.json format.

pkg/front_end/test/src/base/processed_options_test.dart

Index: pkg/front_end/test/src/base/processed_options_test.dart
diff --git a/pkg/front_end/test/src/base/processed_options_test.dart b/pkg/front_end/test/src/base/processed_options_test.dart
index 883dbc995586146497aa3df2e15b6d110a9f38a6..9ad9817d2c93dc73e0c4500e72a4f30adb2ac0ad 100644
--- a/pkg/front_end/test/src/base/processed_options_test.dart
+++ b/pkg/front_end/test/src/base/processed_options_test.dart
@@ -8,6 +8,7 @@ import 'package:front_end/compiler_options.dart';
 import 'package:front_end/memory_file_system.dart';
 import 'package:front_end/src/base/processed_options.dart';
 import 'package:front_end/src/fasta/fasta.dart' show ByteSink;
+import 'package:front_end/src/fasta/compiler_context.dart';
 import 'package:front_end/src/fasta/fasta_codes.dart';
 import 'package:kernel/binary/ast_to_binary.dart' show BinaryPrinter;
 import 'package:kernel/kernel.dart' show Program, Library, CanonicalName;
@@ -17,8 +18,10 @@ import 'package:test/test.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';
 
 main() {
-  defineReflectiveSuite(() {
-    defineReflectiveTests(ProcessedOptionsTest);
+  CompilerContext.runWithDefaultOptions((_) {

[Siggi Cherem (dart-lang), 2017/08/03 03:01:39]

FYI - this line is not needed for this CL, but helpful because otherwise a test
failure shows an error message about a missing context (that is caused when
trying to report the real error within the compiler).

I plan to revisit all of our tests to ensure we have a default context defined
in all of them and don't have this kind of mysterious messages.

+    defineReflectiveSuite(() {
+      defineReflectiveTests(ProcessedOptionsTest);
+    });
   });
 }
 
@@ -84,6 +87,58 @@ class ProcessedOptionsTest {
         mockSummary.libraries.single.importUri);
   }
 
+  test_getUriTranslator_explicitLibrariesSpec() async {
+    fileSystem
+        .entityForUri(Uri.parse('file:///.packages'))
+        .writeAsStringSync('');
+    fileSystem
+        .entityForUri(Uri.parse('file:///libraries.json'))
+        .writeAsStringSync('{"vm":{"libraries":{"foo":{"path":"bar.dart"}}}}');
+    var raw = new CompilerOptions()
+      ..packagesFileUri = Uri.parse('file:///.packages')
+      ..fileSystem = fileSystem
+      ..librariesSpecUri = Uri.parse('file:///libraries.json');
+    var processed = new ProcessedOptions(raw);
+    var uriTranslator = await processed.getUriTranslator();
+    expect(uriTranslator.dartLibraries.libraryInfoFor('foo').uri.path,
+        '/bar.dart');
+  }
+
+  test_getUriTranslator_inferredLibrariesSpec() async {
+    fileSystem
+        .entityForUri(Uri.parse('file:///.packages'))
+        .writeAsStringSync('');
+    fileSystem
+        .entityForUri(Uri.parse('file:///mysdk/lib/libraries.json'))
+        .writeAsStringSync('{"vm":{"libraries":{"foo":{"path":"bar.dart"}}}}');
+    var raw = new CompilerOptions()
+      ..fileSystem = fileSystem
+      ..packagesFileUri = Uri.parse('file:///.packages')
+      ..compileSdk = true
+      ..sdkRoot = Uri.parse('file:///mysdk/');
+    var processed = new ProcessedOptions(raw);
+    var uriTranslator = await processed.getUriTranslator();
+    expect(uriTranslator.dartLibraries.libraryInfoFor('foo').uri.path,
+        '/mysdk/lib/bar.dart');
+  }
+
+  test_getUriTranslator_notInferredLibrariesSpec() async {
+    fileSystem
+        .entityForUri(Uri.parse('file:///.packages'))
+        .writeAsStringSync('');
+    fileSystem
+        .entityForUri(Uri.parse('file:///mysdk/lib/libraries.json'))
+        .writeAsStringSync('{"vm":{"libraries":{"foo":{"path":"bar.dart"}}}}');
+    var raw = new CompilerOptions()
+      ..fileSystem = fileSystem
+      ..packagesFileUri = Uri.parse('file:///.packages')
+      ..compileSdk = false // libraries.json is only inferred if true
+      ..sdkRoot = Uri.parse('file:///mysdk/');
+    var processed = new ProcessedOptions(raw);
+    var uriTranslator = await processed.getUriTranslator();
+    expect(uriTranslator.dartLibraries.libraryInfoFor('foo'), isNull);
+  }
+
   checkPackageExpansion(
       String packageName, String packageDir, Packages packages) {
     var input = Uri.parse('package:$packageName/a.dart');