Check in codegen test expectations.

test/codegen/expect/lib/html/audiocontext_test.js

+dart_library.library('lib/html/audiocontext_test', null, /* Imports */[
+  'dart_sdk',
+  'unittest'
+], function load__audiocontext_test(exports, dart_sdk, unittest) {
+  'use strict';
+  const core = dart_sdk.core;
+  const web_audio = dart_sdk.web_audio;
+  const dart = dart_sdk.dart;
+  const dartx = dart_sdk.dartx;
+  const html_individual_config = unittest.html_individual_config;
+  const src__matcher__core_matchers = unittest.src__matcher__core_matchers;
+  const unittest$ = unittest.unittest;
+  const src__matcher__expect = unittest.src__matcher__expect;
+  const audiocontext_test = Object.create(null);
+  let dynamicTobool = () => (dynamicTobool = dart.constFn(dart.definiteFunctionType(core.bool, [dart.dynamic])))();
+  let VoidTodynamic = () => (VoidTodynamic = dart.constFn(dart.definiteFunctionType(dart.dynamic, [])))();
+  let VoidTovoid = () => (VoidTovoid = dart.constFn(dart.definiteFunctionType(dart.void, [])))();
+  audiocontext_test.main = function() {
+    html_individual_config.useHtmlIndividualConfiguration();
+    let isAudioContext = src__matcher__core_matchers.predicate(dart.fn(x => web_audio.AudioContext.is(x), dynamicTobool()), 'is an AudioContext');
+    unittest$.group('supported', dart.fn(() => {
+      unittest$.test('supported', dart.fn(() => {
+        src__matcher__expect.expect(web_audio.AudioContext[dartx.supported], true);
+      }, VoidTodynamic()));
+    }, VoidTovoid()));
+    unittest$.group('functional', dart.fn(() => {
+      let context = null;
+      if (dart.test(web_audio.AudioContext[dartx.supported])) {
+        context = web_audio.AudioContext.new();
+      }
+      unittest$.test('constructorTest', dart.fn(() => {
+        if (dart.test(web_audio.AudioContext[dartx.supported])) {
+          src__matcher__expect.expect(context, src__matcher__core_matchers.isNotNull);
+          src__matcher__expect.expect(context, isAudioContext);
+        }
+      }, VoidTodynamic()));
+      unittest$.test('audioRenames', dart.fn(() => {
+        if (dart.test(web_audio.AudioContext[dartx.supported])) {
+          let gainNode = web_audio.GainNode._check(dart.dsend(context, 'createGain'));
+          gainNode[dartx.connectNode](web_audio.AudioNode._check(dart.dload(context, 'destination')));
+          src__matcher__expect.expect(web_audio.GainNode.is(gainNode), src__matcher__core_matchers.isTrue);
+          src__matcher__expect.expect(web_audio.AnalyserNode.is(dart.dsend(context, 'createAnalyser')), src__matcher__core_matchers.isTrue);
+          src__matcher__expect.expect(web_audio.AudioNode.is(dart.dsend(context, 'createChannelMerger')), src__matcher__core_matchers.isTrue);
+          src__matcher__expect.expect(web_audio.AudioNode.is(dart.dsend(context, 'createChannelSplitter')), src__matcher__core_matchers.isTrue);
+          src__matcher__expect.expect(web_audio.OscillatorNode.is(dart.dsend(context, 'createOscillator')), src__matcher__core_matchers.isTrue);
+          src__matcher__expect.expect(web_audio.PannerNode.is(dart.dsend(context, 'createPanner')), src__matcher__core_matchers.isTrue);
+          src__matcher__expect.expect(web_audio.ScriptProcessorNode.is(dart.dsend(context, 'createScriptProcessor', 4096)), src__matcher__core_matchers.isTrue);
+        }
+      }, VoidTodynamic()));
+      unittest$.test('oscillatorTypes', dart.fn(() => {
+        if (dart.test(web_audio.AudioContext[dartx.supported])) {
+          let oscillator = web_audio.OscillatorNode._check(dart.dsend(context, 'createOscillator'));
+          oscillator[dartx.connectNode](web_audio.AudioNode._check(dart.dload(context, 'destination')));
+          oscillator[dartx.type] = 'sawtooth';
+          src__matcher__expect.expect(oscillator[dartx.type], src__matcher__core_matchers.equals('sawtooth'));
+          oscillator[dartx.type] = 'sine';
+          src__matcher__expect.expect(oscillator[dartx.type], src__matcher__core_matchers.equals('sine'));
+          oscillator[dartx.type] = 'square';
+          src__matcher__expect.expect(oscillator[dartx.type], src__matcher__core_matchers.equals('square'));
+          oscillator[dartx.type] = 'triangle';
+          src__matcher__expect.expect(oscillator[dartx.type], src__matcher__core_matchers.equals('triangle'));
+          src__matcher__expect.expect(oscillator[dartx.type], src__matcher__core_matchers.equals('triangle'));
+          src__matcher__expect.expect(oscillator[dartx.type], src__matcher__core_matchers.equals('triangle'));
+        }
+      }, VoidTodynamic()));
+    }, VoidTovoid()));
+  };
+  dart.fn(audiocontext_test.main, VoidTodynamic());
+  // Exports:
+  exports.audiocontext_test = audiocontext_test;
+});