Check in codegen test expectations.

test/codegen/expect/language/function_subtype_local0_test.js

Index: test/codegen/expect/language/function_subtype_local0_test.js
diff --git a/test/codegen/expect/language/function_subtype_local0_test.js b/test/codegen/expect/language/function_subtype_local0_test.js
new file mode 100644
index 0000000000000000000000000000000000000000..924e94053198be2abf24cc5260f2652292481e2a
--- /dev/null
+++ b/test/codegen/expect/language/function_subtype_local0_test.js
@@ -0,0 +1,51 @@
+dart_library.library('language/function_subtype_local0_test', null, /* Imports */[
+  'dart_sdk',
+  'expect'
+], function load__function_subtype_local0_test(exports, dart_sdk, expect) {
+  'use strict';
+  const core = dart_sdk.core;
+  const dart = dart_sdk.dart;
+  const dartx = dart_sdk.dartx;
+  const expect$ = expect.expect;
+  const function_subtype_local0_test = Object.create(null);
+  let bool__Toint = () => (bool__Toint = dart.constFn(dart.definiteFunctionType(core.int, [core.bool], [core.String])))();
+  let bool__Toint$ = () => (bool__Toint$ = dart.constFn(dart.definiteFunctionType(core.int, [core.bool], {b: core.String})))();
+  let bool__Toint$0 = () => (bool__Toint$0 = dart.constFn(dart.definiteFunctionType(core.int, [core.bool], {b: core.int})))();
+  let VoidTodynamic = () => (VoidTodynamic = dart.constFn(dart.definiteFunctionType(dart.dynamic, [])))();
+  function_subtype_local0_test.Foo = dart.typedef('Foo', () => dart.functionType(core.int, [core.bool], [core.String]));
+  function_subtype_local0_test.Bar = dart.typedef('Bar', () => dart.functionType(core.int, [core.bool], [core.String]));
+  function_subtype_local0_test.Baz = dart.typedef('Baz', () => dart.functionType(core.int, [core.bool], {b: core.String}));
+  function_subtype_local0_test.Boz = dart.typedef('Boz', () => dart.functionType(core.int, [core.bool]));
+  function_subtype_local0_test.main = function() {
+    function foo(a, b) {
+      if (b === void 0) b = null;
+      return null;
+    }
+    dart.fn(foo, bool__Toint());
+    function baz(a, opts) {
+      let b = opts && 'b' in opts ? opts.b : null;
+      return null;
+    }
+    dart.fn(baz, bool__Toint$());
+    function boz(a, opts) {
+      let b = opts && 'b' in opts ? opts.b : null;
+      return null;
+    }
+    dart.fn(boz, bool__Toint$0());
+    expect$.Expect.isTrue(function_subtype_local0_test.Foo.is(foo), 'foo is Foo');
+    expect$.Expect.isTrue(function_subtype_local0_test.Bar.is(foo), 'foo is Bar');
+    expect$.Expect.isFalse(function_subtype_local0_test.Baz.is(foo), 'foo is Baz');
+    expect$.Expect.isTrue(function_subtype_local0_test.Boz.is(foo), 'foo is Boz');
+    expect$.Expect.isFalse(function_subtype_local0_test.Foo.is(baz), 'baz is Foo');
+    expect$.Expect.isFalse(function_subtype_local0_test.Bar.is(baz), 'baz is Bar');
+    expect$.Expect.isTrue(function_subtype_local0_test.Baz.is(baz), 'baz is Baz');
+    expect$.Expect.isTrue(function_subtype_local0_test.Boz.is(baz), 'baz is Boz');
+    expect$.Expect.isFalse(function_subtype_local0_test.Foo.is(boz), 'boz is Foo');
+    expect$.Expect.isFalse(function_subtype_local0_test.Bar.is(boz), 'boz is Bar');
+    expect$.Expect.isFalse(function_subtype_local0_test.Baz.is(boz), 'boz is Baz');
+    expect$.Expect.isTrue(function_subtype_local0_test.Boz.is(boz), 'boz is Boz');
+  };
+  dart.fn(function_subtype_local0_test.main, VoidTodynamic());
+  // Exports:
+  exports.function_subtype_local0_test = function_subtype_local0_test;
+});