Add codegen support in smoke

pkg/smoke/test/codegen/end_to_end_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.
+
+/// And end-to-end test that generates code and checks that the output matches
+/// the code in `static_test.dart`. Techincally we could run the result in an
+/// isolate, but instead we decided to split that up in two tests. This test
+/// ensures that we generate the code as it was written in static_test, and
+/// separately static_test ensures that the smoke.static library behaves as
+/// expected.
+library smoke.test.codegen.end_to_end_test;
+
+import 'dart:io';
+import 'dart:isolate';
+
+import 'package:analyzer/src/generated/element.dart';
+import 'package:smoke/codegen/generator.dart';
+import 'package:smoke/codegen/recorder.dart';
+import 'package:unittest/unittest.dart';
+import 'package:path/path.dart' as path;
+
+import 'testing_resolver_utils.dart' show initAnalyzer;
+
+main(args) {
+  final updateStaticTest = args.length > 0 && args[0] == '--update_static_test';
+
+  test('static_test is up to date', () {
+    var scriptPath = Platform.script.path;
+    var testDir = path.dirname(path.dirname(scriptPath));
+    var commonPath = path.join(testDir, 'common.dart');
+    var testCode = new File('$commonPath').readAsStringSync();
+    var lib = initAnalyzer({'common.dart' : testCode})
+        .libraryFor('common.dart');
+    var coreLib = lib.visibleLibraries.firstWhere(
+        (l) => l.displayName == 'dart.core');
+    var generator = new SmokeCodeGenerator();
+    var recorder = new Recorder(generator, resolveImportUrl);
+
+    // Record all getters and setters we use in the tests.
+    generator.addGetter("i");
+    generator.addGetter("j");
+    generator.addGetter("j2");
+    generator.addGetter("inc0");
+    generator.addGetter("inc1");
+    generator.addGetter("inc2");
+    generator.addSetter("i");
+    generator.addSetter("j2");
+
+    // Record symbol convertions.
+    generator.addSymbol('i');
+
+    /// Record all parent-class relations that we explicitly request for 
+    recorder.lookupParent(lib.getType('AnnotB'));
+    recorder.lookupParent(lib.getType('A'));
+    recorder.lookupParent(lib.getType('B'));
+    recorder.lookupParent(lib.getType('D'));
+    recorder.lookupParent(lib.getType('H'));
+
+    // Record members for which we implicitly request their declaration in
+    // has-getter and has-setter tests.
+    recorder.lookupMember(lib.getType('A'), "i", recursive: true);
+    recorder.lookupMember(lib.getType('A'), "j2", recursive: true);
+    recorder.lookupMember(lib.getType('A'), "inc2", recursive: true);
+    recorder.lookupMember(lib.getType('B'), "a", recursive: true);
+    recorder.lookupMember(lib.getType('B'), "f", recursive: true);
+    recorder.lookupMember(lib.getType('D'), "i", recursive: true);
+    recorder.lookupMember(lib.getType('E'), "y", recursive: true);
+
+    // Record also lookups for non-exisiting members.
+    recorder.lookupMember(lib.getType('B'), "i", recursive: true);
+    recorder.lookupMember(lib.getType('E'), "x", recursive: true);
+    recorder.lookupMember(lib.getType('E'), "z", recursive: true);
+
+    // Record members for which we explicitly request their declaration.
+    recorder.lookupMember(lib.getType('B'), "a");
+    recorder.lookupMember(lib.getType('B'), "w");
+    recorder.lookupMember(lib.getType('A'), "inc1");
+    recorder.lookupMember(lib.getType('F'), "staticMethod");
+    recorder.lookupMember(lib.getType('G'), "b");
+    recorder.lookupMember(lib.getType('G'), "d");
+
+    // Lookups from no-such-method test.
+    recorder.lookupMember(lib.getType('A'), "noSuchMethod", recursive: true);
+    recorder.lookupMember(lib.getType('E'), "noSuchMethod", recursive: true);
+    recorder.lookupMember(lib.getType('E2'), "noSuchMethod", recursive: true);
+
+    // Lookups from has-instance-method and has-static-method tests.
+    recorder.lookupMember(lib.getType('A'), "inc0", recursive: true);
+    recorder.lookupMember(lib.getType('A'), "inc3", recursive: true);
+    recorder.lookupMember(lib.getType('C'), "inc", recursive: true);
+    recorder.lookupMember(lib.getType('D'), "inc", recursive: true);
+    recorder.lookupMember(lib.getType('D'), "inc0", recursive: true);
+    recorder.lookupMember(lib.getType('F'), "staticMethod", recursive: true);
+    recorder.lookupMember(lib.getType('F2'), "staticMethod", recursive: true);
+
+    // Record all queries done by the test.
+    recorder.runQuery(lib.getType('A'), new QueryOptions());
+    recorder.runQuery(lib.getType('D'),
+        new QueryOptions(includeInherited: true));
+
+    var vars = lib.definingCompilationUnit.topLevelVariables;
+    expect(vars[0].name, 'a1');
+    expect(vars[1].name, 'a2');
+    var options = new QueryOptions(includeInherited: true,
+        withAnnotations: [vars[0], vars[1], lib.getType('Annot')]);
+    recorder.runQuery(lib.getType('H'), options);
+
+    /// Create the isolate entrypoint
+    var code = _createEntrypoint(generator);
+
+    var staticTestFile = new File(path.join(testDir, 'static_test.dart'));
+    var existingCode = staticTestFile.readAsStringSync();
+    if (!updateStaticTest) {
+      expect(code, existingCode);
+    } else if (code == existingCode) {
+      print('static_test.dart is already up to date');
+    } else {
+      staticTestFile.writeAsStringSync(code);
+      print('static_test.dart has been updated.');
+    }
+  });
+}
+
+_createEntrypoint(SmokeCodeGenerator generator) {
+  var sb = new StringBuffer()
+      ..writeln('/// ---- AUTOGENERATED: DO NOT EDIT THIS FILE --------------')
+      ..writeln('/// To update this test file, call:')
+      ..writeln('/// > dart codegen/end_to_end_test.dart --update_static_test')
+      ..writeln('/// --------------------------------------------------------');
+  sb.write('\nlibrary smoke.test.static_test;\n\n');
+  sb.writeln("import 'package:unittest/unittest.dart';");
+  for (var import in generator.generateImports()) {
+    sb.writeln(import);
+  }
+  sb.writeln("import 'common.dart' as common show main;\n");
+  sb.writeln(generator.generateTopLevelDeclarations());
+  sb.writeln('_configure() {');
+  sb.write(generator.generateInitCall());
+  sb.writeln('}\n');
+  sb.writeln('main() {');
+  sb.writeln('  setUp(_configure);');
+  sb.writeln('  common.main();');
+  sb.writeln('}');
+  return sb.toString();
+}
+
+
+resolveImportUrl(LibraryElement lib) {
+  if (lib.isDartCore) return 'dart:core';
+  if (lib.displayName == 'smoke.test.common') return 'common.dart';
+  return 'unknown.dart';
+}