Check in codegen test expectations.

test/codegen/expect/BenchmarkBase.js

+dart_library.library('BenchmarkBase', null, /* Imports */[
+  'dart_sdk'
+], function load__BenchmarkBase(exports, dart_sdk) {
+  'use strict';
+  const core = dart_sdk.core;
+  const dart = dart_sdk.dart;
+  const dartx = dart_sdk.dartx;
+  const BenchmarkBase$ = Object.create(null);
+  let VoidTodynamic = () => (VoidTodynamic = dart.constFn(dart.definiteFunctionType(dart.dynamic, [])))();
+  BenchmarkBase$.Expect = class Expect extends core.Object {
+    static equals(expected, actual) {
+      if (!dart.equals(expected, actual)) {
+        dart.throw(dart.str`Values not equal: ${expected} vs ${actual}`);
+      }
+    }
+    static listEquals(expected, actual) {
+      if (expected[dartx.length] != actual[dartx.length]) {
+        dart.throw(dart.str`Lists have different lengths: ${expected[dartx.length]} vs ${actual[dartx.length]}`);
+      }
+      for (let i = 0; i < dart.notNull(actual[dartx.length]); i++) {
+        BenchmarkBase$.Expect.equals(expected[dartx.get](i), actual[dartx.get](i));
+      }
+    }
+    fail(message) {
+      dart.throw(message);
+    }
+  };
+  dart.setSignature(BenchmarkBase$.Expect, {
+    methods: () => ({fail: dart.definiteFunctionType(dart.dynamic, [dart.dynamic])}),
+    statics: () => ({
+      equals: dart.definiteFunctionType(dart.void, [dart.dynamic, dart.dynamic]),
+      listEquals: dart.definiteFunctionType(dart.void, [core.List, core.List])
+    }),
+    names: ['equals', 'listEquals']
+  });
+  BenchmarkBase$.BenchmarkBase = class BenchmarkBase extends core.Object {
+    new(name) {
+      this.name = name;
+    }
+    run() {}
+    warmup() {
+      this.run();
+    }
+    exercise() {
+      for (let i = 0; i < 10; i++) {
+        this.run();
+      }
+    }
+    setup() {}
+    teardown() {}
+    static measureFor(f, timeMinimum) {
+      let time = 0;
+      let iter = 0;
+      let watch = new core.Stopwatch();
+      watch.start();
+      let elapsed = 0;
+      while (dart.notNull(elapsed) < dart.notNull(timeMinimum)) {
+        dart.dcall(f);
+        elapsed = watch.elapsedMilliseconds;
+        iter++;
+      }
+      return 1000.0 * dart.notNull(elapsed) / iter;
+    }
+    measure() {
+      this.setup();
+      BenchmarkBase$.BenchmarkBase.measureFor(dart.fn(() => {
+        this.warmup();
+      }, VoidTodynamic()), 100);
+      let result = BenchmarkBase$.BenchmarkBase.measureFor(dart.fn(() => {
+        this.exercise();
+      }, VoidTodynamic()), 2000);
+      this.teardown();
+      return result;
+    }
+    report() {
+      let score = this.measure();
+      core.print(dart.str`${this.name}(RunTime): ${score} us.`);
+    }
+  };
+  dart.setSignature(BenchmarkBase$.BenchmarkBase, {
+    constructors: () => ({new: dart.definiteFunctionType(BenchmarkBase$.BenchmarkBase, [core.String])}),
+    methods: () => ({
+      run: dart.definiteFunctionType(dart.void, []),
+      warmup: dart.definiteFunctionType(dart.void, []),
+      exercise: dart.definiteFunctionType(dart.void, []),
+      setup: dart.definiteFunctionType(dart.void, []),
+      teardown: dart.definiteFunctionType(dart.void, []),
+      measure: dart.definiteFunctionType(core.double, []),
+      report: dart.definiteFunctionType(dart.void, [])
+    }),
+    statics: () => ({measureFor: dart.definiteFunctionType(core.double, [core.Function, core.int])}),
+    names: ['measureFor']
+  });
+  // Exports:
+  exports.BenchmarkBase = BenchmarkBase$;
+});