Check in codegen test expectations.

test/codegen/expect/language/and_operation_on_non_integer_operand_test.js

+dart_library.library('language/and_operation_on_non_integer_operand_test', null, /* Imports */[
+  'dart_sdk',
+  'expect'
+], function load__and_operation_on_non_integer_operand_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 and_operation_on_non_integer_operand_test = Object.create(null);
+  let dynamicTodynamic = () => (dynamicTodynamic = dart.constFn(dart.definiteFunctionType(dart.dynamic, [dart.dynamic])))();
+  let VoidTodynamic = () => (VoidTodynamic = dart.constFn(dart.definiteFunctionType(dart.dynamic, [])))();
+  and_operation_on_non_integer_operand_test.NotAnInt = class NotAnInt extends core.Object {
+    ['&'](b) {
+      return this;
+    }
+  };
+  dart.setSignature(and_operation_on_non_integer_operand_test.NotAnInt, {
+    methods: () => ({'&': dart.definiteFunctionType(and_operation_on_non_integer_operand_test.NotAnInt, [dart.dynamic])})
+  });
+  and_operation_on_non_integer_operand_test.id = function(x) {
+    return x;
+  };
+  dart.fn(and_operation_on_non_integer_operand_test.id, dynamicTodynamic());
+  and_operation_on_non_integer_operand_test.main = function() {
+    let a = and_operation_on_non_integer_operand_test.id(new and_operation_on_non_integer_operand_test.NotAnInt());
+    expect$.Expect.equals(a, dart.dsend(dart.dsend(a, '&', 5), '&', 2));
+  };
+  dart.fn(and_operation_on_non_integer_operand_test.main, VoidTodynamic());
+  // Exports:
+  exports.and_operation_on_non_integer_operand_test = and_operation_on_non_integer_operand_test;
+});