Check in codegen test expectations.

test/codegen/expect/language/truncdiv_test.js

+dart_library.library('language/truncdiv_test', null, /* Imports */[
+  'dart_sdk',
+  'expect'
+], function load__truncdiv_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 truncdiv_test = Object.create(null);
+  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, [])))();
+  let dynamicAnddynamicTodynamic = () => (dynamicAnddynamicTodynamic = dart.constFn(dart.definiteFunctionType(dart.dynamic, [dart.dynamic, dart.dynamic])))();
+  let dynamicTodynamic = () => (dynamicTodynamic = dart.constFn(dart.definiteFunctionType(dart.dynamic, [dart.dynamic])))();
+  truncdiv_test.main = function() {
+    for (let i = -30; i < 30; i++) {
+      expect$.Expect.equals(i[dartx['%']](9), truncdiv_test.foo(i, 9));
+      if (i < 0) {
+        expect$.Expect.equals((i / -i)[dartx.truncate](), truncdiv_test.foo2(i));
+      } else if (i > 0) {
+        expect$.Expect.equals((i / i)[dartx.truncate](), truncdiv_test.foo2(i));
+      }
+    }
+    expect$.Expect.throws(dart.fn(() => truncdiv_test.foo(12, 0), VoidTovoid()), dart.fn(e => core.IntegerDivisionByZeroException.is(e), dynamicTobool()));
+    expect$.Expect.throws(dart.fn(() => truncdiv_test.foo2(0), VoidTovoid()), dart.fn(e => core.IntegerDivisionByZeroException.is(e), dynamicTobool()));
+  };
+  dart.fn(truncdiv_test.main, VoidTodynamic());
+  truncdiv_test.foo = function(i, x) {
+    return dart.dsend(i, '%', x);
+  };
+  dart.fn(truncdiv_test.foo, dynamicAnddynamicTodynamic());
+  truncdiv_test.foo2 = function(i) {
+    let x = 0;
+    if (dart.test(dart.dsend(i, '<', 0))) {
+      x = core.int._check(dart.dsend(i, 'unary-'));
+    } else {
+      x = core.int._check(i);
+    }
+    return dart.dsend(i, '~/', x);
+  };
+  dart.fn(truncdiv_test.foo2, dynamicTodynamic());
+  // Exports:
+  exports.truncdiv_test = truncdiv_test;
+});