e669816e1f
Initial version of the correctness fuzzer harness for manual testing and experiments. For automated usage, some outstanding TODOs are left in the code. E.g. - Hash source file names in error case - Bundle script in out directory with executables - Some suppressions are tied to already fixed bugs. We'll keep it like that for now to test removing those suppressions in production later. BUG=chromium:673246 NOTRY=true Review-Url: https://codereview.chromium.org/2578503003 Cr-Commit-Position: refs/heads/master@{#41789}
77 lines
2.3 KiB
JavaScript
77 lines
2.3 KiB
JavaScript
// Copyright 2016 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// This is intended for permanent JS behavior changes for mocking out
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// non-deterministic behavior. For temporary suppressions, please refer to
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// v8_suppressions.js.
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// This file is loaded before each correctness test cases and won't get
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// minimized.
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// This will be overridden in the test cases. The override can be minimized.
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var __PrettyPrint = function __PrettyPrint(msg) { print(msg); };
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// All calls to f.arguments are replaced by f.mock_arguments by an external
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// script.
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Object.prototype.mock_arguments = ['x', 'y']
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// Mock Math.random.
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var __magic_index_for_mocked_random = 0
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Math.random = function(){
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__magic_index_for_mocked_random = (__magic_index_for_mocked_random + 1) % 10
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return __magic_index_for_mocked_random / 10.0;
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}
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// Mock Date.
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var __magic_index_for_mocked_date = 0
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var __magic_mocked_date = 1477662728696
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__magic_mocked_date_now = function(){
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__magic_index_for_mocked_date = (__magic_index_for_mocked_date + 1) % 10
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__magic_mocked_date = __magic_mocked_date + __magic_index_for_mocked_date + 1
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return __magic_mocked_date
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}
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var __original_date = Date;
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__magic_mock_date_handler = {
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construct: function(target, args, newTarget) {
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if (args.length > 0) {
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return new (Function.prototype.bind.apply(__original_date, [null].concat(args)));
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} else {
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return new __original_date(__magic_mocked_date_now());
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}
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},
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get: function(target, property, receiver) {
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if (property == "now") {
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return __magic_mocked_date_now;
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}
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},
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}
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Date = new Proxy(Date, __magic_mock_date_handler);
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// Mock Worker.
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var __magic_index_for_mocked_worker = 0
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// TODO(machenbach): Randomize this for each test case, but keep stable during
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// comparison. Also data and random above.
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var __magic_mocked_worker_messages = [
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undefined, 0, -1, "", "foo", 42, [], {}, [0], {"x": 0}
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]
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Worker = function(code){
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try {
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__PrettyPrint(eval(code));
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} catch(e) {
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__PrettyPrint(e);
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}
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this.getMessage = function(){
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__magic_index_for_mocked_worker = (__magic_index_for_mocked_worker + 1) % 10
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return __magic_mocked_worker_messages[__magic_index_for_mocked_worker];
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}
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this.postMessage = function(msg){
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__PrettyPrint(msg);
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}
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}
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