Check in codegen test expectations.

test/codegen/expect/language/issue10783_test.js

+dart_library.library('language/issue10783_test', null, /* Imports */[
+  'dart_sdk',
+  'expect'
+], function load__issue10783_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 issue10783_test = Object.create(null);
+  let JSArrayOfObject = () => (JSArrayOfObject = dart.constFn(_interceptors.JSArray$(core.Object)))();
+  let ListOfObject = () => (ListOfObject = dart.constFn(core.List$(core.Object)))();
+  let JSArrayOfListOfObject = () => (JSArrayOfListOfObject = dart.constFn(_interceptors.JSArray$(ListOfObject())))();
+  let VoidTovoid = () => (VoidTovoid = dart.constFn(dart.definiteFunctionType(dart.void, [])))();
+  let dynamicTobool = () => (dynamicTobool = dart.constFn(dart.definiteFunctionType(core.bool, [dart.dynamic])))();
+  let VoidTodynamic = () => (VoidTodynamic = dart.constFn(dart.definiteFunctionType(dart.dynamic, [])))();
+  issue10783_test.C = class C extends core.Object {
+    foo(y) {
+      return y;
+    }
+  };
+  dart.setSignature(issue10783_test.C, {
+    methods: () => ({foo: dart.definiteFunctionType(dart.dynamic, [core.int])})
+  });
+  issue10783_test.main = function() {
+    for (let b of JSArrayOfListOfObject().of([JSArrayOfObject().of([false, 'pig'])])) {
+      let c = null;
+      if (dart.test(b[dartx.get](0))) c = new issue10783_test.C();
+      expect$.Expect.throws(dart.fn(() => core.print(dart.dsend(c, 'foo', b[dartx.get](1))), VoidTovoid()), dart.fn(e => core.NoSuchMethodError.is(e), dynamicTobool()));
+    }
+  };
+  dart.fn(issue10783_test.main, VoidTodynamic());
+  // Exports:
+  exports.issue10783_test = issue10783_test;
+});