Check in codegen test expectations.

test/codegen/expect/language/namer2_test.js

Index: test/codegen/expect/language/namer2_test.js
diff --git a/test/codegen/expect/language/namer2_test.js b/test/codegen/expect/language/namer2_test.js
new file mode 100644
index 0000000000000000000000000000000000000000..518f5c291e0d20071e2504eef7340fb246fdf9f6
--- /dev/null
+++ b/test/codegen/expect/language/namer2_test.js
@@ -0,0 +1,40 @@
+dart_library.library('language/namer2_test', null, /* Imports */[
+  'dart_sdk',
+  'expect'
+], function load__namer2_test(exports, dart_sdk, expect) {
+  'use strict';
+  const core = dart_sdk.core;
+  const _interceptors = dart_sdk._interceptors;
+  const dart = dart_sdk.dart;
+  const dartx = dart_sdk.dartx;
+  const expect$ = expect.expect;
+  const namer2_test = Object.create(null);
+  let A = () => (A = dart.constFn(namer2_test.A$()))();
+  let JSArrayOfA = () => (JSArrayOfA = dart.constFn(_interceptors.JSArray$(namer2_test.A)))();
+  let AOfint = () => (AOfint = dart.constFn(namer2_test.A$(core.int)))();
+  let AOfString = () => (AOfString = dart.constFn(namer2_test.A$(core.String)))();
+  let VoidTodynamic = () => (VoidTodynamic = dart.constFn(dart.definiteFunctionType(dart.dynamic, [])))();
+  namer2_test.A$ = dart.generic(T => {
+    class A extends core.Object {
+      new() {
+        this.$isA = null;
+        this.$eq = null;
+        this.$builtinTypeInfo = null;
+      }
+    }
+    dart.addTypeTests(A);
+    return A;
+  });
+  namer2_test.A = A();
+  namer2_test.main = function() {
+    let c = JSArrayOfA().of([new namer2_test.A()]);
+    expect$.Expect.isTrue(namer2_test.A.is(c[dartx.get](0)));
+    expect$.Expect.isTrue(dart.equals(c[dartx.get](0), c[dartx.get](0)));
+    c = JSArrayOfA().of([new (AOfint())()]);
+    c[dartx.get](0).$builtinTypeInfo = 42;
+    expect$.Expect.isTrue(!AOfString().is(c[dartx.get](0)));
+  };
+  dart.fn(namer2_test.main, VoidTodynamic());
+  // Exports:
+  exports.namer2_test = namer2_test;
+});