Check in codegen test expectations.

test/codegen/expect/language/param2_test.js

+dart_library.library('language/param2_test', null, /* Imports */[
+  'dart_sdk',
+  'expect'
+], function load__param2_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 param2_test = Object.create(null);
+  let JSArrayOfint = () => (JSArrayOfint = dart.constFn(_interceptors.JSArray$(core.int)))();
+  let intToint = () => (intToint = dart.constFn(dart.definiteFunctionType(core.int, [core.int])))();
+  let dynamicTodynamic = () => (dynamicTodynamic = dart.constFn(dart.definiteFunctionType(dart.dynamic, [dart.dynamic])))();
+  let dynamicTobool = () => (dynamicTobool = dart.constFn(dart.definiteFunctionType(core.bool, [dart.dynamic])))();
+  let VoidTodynamic = () => (VoidTodynamic = dart.constFn(dart.definiteFunctionType(dart.dynamic, [])))();
+  param2_test.Param2Test = class Param2Test extends core.Object {
+    static forEach(a, f) {
+      for (let i = 0; i < dart.notNull(a[dartx.length]); i++) {
+        a[dartx.set](i, dart.dcall(f, a[dartx.get](i)));
+      }
+    }
+    static apply(f, arg) {
+      let res = f(arg);
+      return core.int._check(res);
+    }
+    static exists(a, f) {
+      for (let i = 0; i < dart.notNull(a[dartx.length]); i++) {
+        if (dart.test(dart.dcall(f, a[dartx.get](i)))) return true;
+      }
+      return false;
+    }
+    static testMain() {
+      function square(x) {
+        return dart.notNull(x) * dart.notNull(x);
+      }
+      dart.fn(square, intToint());
+      expect$.Expect.equals(4, param2_test.Param2Test.apply(square, 2));
+      expect$.Expect.equals(100, param2_test.Param2Test.apply(square, 10));
+      let v = JSArrayOfint().of([1, 2, 3, 4, 5, 6]);
+      param2_test.Param2Test.forEach(v, square);
+      expect$.Expect.equals(1, v[dartx.get](0));
+      expect$.Expect.equals(4, v[dartx.get](1));
+      expect$.Expect.equals(9, v[dartx.get](2));
+      expect$.Expect.equals(16, v[dartx.get](3));
+      expect$.Expect.equals(25, v[dartx.get](4));
+      expect$.Expect.equals(36, v[dartx.get](5));
+      function isOdd(element) {
+        return dart.equals(dart.dsend(element, '%', 2), 1);
+      }
+      dart.fn(isOdd, dynamicTodynamic());
+      expect$.Expect.equals(true, param2_test.Param2Test.exists(JSArrayOfint().of([3, 5, 7, 11, 13]), isOdd));
+      expect$.Expect.equals(false, param2_test.Param2Test.exists(JSArrayOfint().of([2, 4, 10]), isOdd));
+      expect$.Expect.equals(false, param2_test.Param2Test.exists(JSArrayOfint().of([]), isOdd));
+      v = JSArrayOfint().of([4, 5, 7]);
+      expect$.Expect.equals(true, param2_test.Param2Test.exists(v, dart.fn(e => dart.equals(dart.dsend(e, '%', 2), 1), dynamicTobool())));
+      expect$.Expect.equals(false, param2_test.Param2Test.exists(v, dart.fn(e => dart.equals(e, 6), dynamicTobool())));
+      let isZero = dart.fn(e => dart.equals(e, 0), dynamicTobool());
+      expect$.Expect.equals(false, param2_test.Param2Test.exists(v, isZero));
+    }
+  };
+  dart.setSignature(param2_test.Param2Test, {
+    statics: () => ({
+      forEach: dart.definiteFunctionType(dart.dynamic, [core.List$(core.int), dart.functionType(core.int, [dart.dynamic])]),
+      apply: dart.definiteFunctionType(core.int, [dart.functionType(dart.dynamic, [core.int]), core.int]),
+      exists: dart.definiteFunctionType(dart.dynamic, [core.List$(core.int), dart.functionType(dart.dynamic, [dart.dynamic])]),
+      testMain: dart.definiteFunctionType(dart.dynamic, [])
+    }),
+    names: ['forEach', 'apply', 'exists', 'testMain']
+  });
+  param2_test.main = function() {
+    param2_test.Param2Test.testMain();
+  };
+  dart.fn(param2_test.main, VoidTodynamic());
+  // Exports:
+  exports.param2_test = param2_test;
+});