Add Fasta tests.

pkg/fasta/lib/testing/suite.dart

+// Copyright (c) 2016, 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.md file.
+
+library fasta.testing.suite;
+
+import 'dart:async' show
+    Future;
+
+import 'dart:convert' show
+    JSON;
+
+import 'package:analyzer/src/generated/sdk.dart' show
+    DartSdk;
+
+import 'package:kernel/ast.dart' show
+    Library,
+    Program;
+
+import 'package:kernel/analyzer/loader.dart' show
+    DartLoader;
+
+import 'package:kernel/target/targets.dart' show
+    Target,
+    TargetFlags,
+    getTarget;
+
+import 'package:testing/testing.dart' show
+    Chain,
+    ExpectationSet,
+    Result,
+    Step,
+    TestDescription;
+
+import '../src/errors.dart' show
+    InputError;
+
+import 'kernel_chain.dart' show
+    MatchExpectation,
+    Print,
+    Run,
+    Verify,
+    TestContext,
+    WriteDill;
+
+import '../src/ticker.dart' show
+    Ticker;
+
+import '../src/translate_uri.dart' show
+    TranslateUri;
+
+import '../src/kernel/kernel_target.dart' show
+    KernelSourceTarget;
+
+import '../src/dill/dill_target.dart' show
+    DillTarget;
+
+import '../src/ast_kind.dart' show
+    AstKind;
+
+export 'kernel_chain.dart' show
+    TestContext;
+
+export 'package:testing/testing.dart' show
+    Chain,
+    runMe;
+
+export '../src/ast_kind.dart' show
+    AstKind;
+
+const String ENABLE_FULL_COMPILE = " full compile ";
+
+const String AST_KIND_INDEX = " AST kind index ";
+
+const String EXPECTATIONS = '''
+[
+  {
+    "name": "VerificationError",
+    "group": "Fail"
+  }
+]
+''';
+
+String shortenAstKindName(AstKind astKind) {
+  switch (astKind) {
+    case AstKind.Analyzer: return "dartk";
+    case AstKind.Kernel: return "direct";
+  }
+  throw "Unknown AST kind: $astKind";
+}
+
+class FeContext extends TestContext {
+  final TranslateUri uriTranslator;
+
+  final List<Step> steps;
+
+  final ExpectationSet expectationSet =
+      new ExpectationSet.fromJsonList(JSON.decode(EXPECTATIONS));
+
+  Future<Program> platform;
+
+  FeContext(String sdk, Uri vm, Uri packages, bool strongMode,
+      DartSdk dartSdk, bool updateExpectations, this.uriTranslator,
+      bool fullCompile, AstKind astKind)
+      : steps = <Step>[
+          new Outline(fullCompile, astKind),
+          const Print(),
+          new Verify(fullCompile),
+          new MatchExpectation(
+              fullCompile
+                  ? ".${shortenAstKindName(astKind)}.expect"
+                  : ".outline.expect",
+              updateExpectations: updateExpectations)
+        ],
+        super(sdk, vm, packages, strongMode, dartSdk) {
+    if (fullCompile) {
+      steps.add(const WriteDill());
+      steps.add(const Run());
+    }
+  }
+
+  Future<Program> createPlatform() {
+    return platform ??= new Future<Program>(() async {
+      DartLoader loader = await createLoader();
+      Target target = getTarget(
+          "vm", new TargetFlags(strongMode: options.strongMode));
+      Program program = loader.loadProgram(
+          Uri.base.resolve("pkg/fasta/test/platform.dart"), target: target);
+      target.transformProgram(program);
+      if (loader.errors.isNotEmpty) {
+        throw loader.errors.join("\n");
+      }
+      Library mainLibrary = program.mainMethod.enclosingLibrary;
+      program.uriToLineStarts.remove(mainLibrary.fileUri);
+      return new Program(
+          program.libraries.where((Library l) => l != mainLibrary).toList(),
+          program.uriToLineStarts);
+    });
+  }
+
+  static Future<FeContext> create(Chain suite, Map<String, String> environment,
+      String sdk, Uri vm, Uri packages, bool strongMode, DartSdk dartSdk,
+      bool updateExpectations) async {
+    TranslateUri uriTranslator = await TranslateUri.parse(packages);
+    String astKindString = environment[AST_KIND_INDEX];
+    AstKind astKind = astKindString == null
+        ? null : AstKind.values[int.parse(astKindString)];
+    return new FeContext(
+        sdk, vm, packages, strongMode, dartSdk, updateExpectations,
+        uriTranslator, environment.containsKey(ENABLE_FULL_COMPILE), astKind);
+  }
+}
+
+class Outline extends Step<TestDescription, Program, FeContext> {
+  final bool fullCompile;
+
+  final AstKind astKind;
+
+  const Outline(this.fullCompile, this.astKind);
+
+  String get name {
+    return fullCompile ? "${shortenAstKindName(astKind)} compile" : "outline";
+  }
+
+  bool get isCompiler => fullCompile;
+
+  Future<Result<Program>> run(
+      TestDescription description, FeContext context) async {
+    Program platform = await context.createPlatform();
+    Ticker ticker = new Ticker();
+    DillTarget dillTarget = new DillTarget(ticker, context.uriTranslator);
+    dillTarget.loader.setProgram(platform);
+    KernelSourceTarget sourceTarget =
+        new KernelSourceTarget(dillTarget, context.uriTranslator);
+    Program p;
+    try {
+      sourceTarget.read(description.uri);
+      await dillTarget.writeOutline(null);
+      p = await sourceTarget.writeOutline(null);
+      if (fullCompile) {
+        p = await sourceTarget.writeProgram(null, astKind);
+      }
+    } on InputError catch (e, s) {
+      return fail(null, e.error, s);
+    }
+    return pass(p);
+  }
+}