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// Copyright 2016 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// This is intended for permanent JS behavior changes for mocking out
// non-deterministic behavior. For temporary suppressions, please refer to
// v8_suppressions.js.
// This file is loaded before each correctness test cases and won't get
// minimized.
// This will be overridden in the test cases. The override can be minimized.
var prettyPrinted = function prettyPrinted(msg) { return msg; };
// Mock Math.random.
(function () {
var index = 0
Math.random = function() {
index = (index + 1) % 10;
return index / 10.0;
}
})();
// Mock Date.
(function () {
var index = 0
var mockDate = 1477662728696
var mockDateNow = function() {
index = (index + 1) % 10
mockDate = mockDate + index + 1
return mockDate
}
var origDate = Date;
var constructDate = function(args) {
if (args.length == 1) {
var result = new origDate(args[0]);
} else if (args.length == 2) {
var result = new origDate(args[0], args[1]);
} else if (args.length == 3) {
var result = new origDate(args[0], args[1], args[2]);
} else if (args.length == 4) {
var result = new origDate(args[0], args[1], args[2], args[3]);
} else if (args.length == 5) {
var result = new origDate(args[0], args[1], args[2], args[3], args[4]);
} else if (args.length == 6) {
var result = new origDate(
args[0], args[1], args[2], args[3], args[4], args[5]);
} else if (args.length >= 7) {
var result = new origDate(
args[0], args[1], args[2], args[3], args[4], args[5], args[6]);
} else {
var result = new origDate(mockDateNow());
}
result.constructor = function(...args) { return constructDate(args); }
Object.defineProperty(
result, "constructor", { configurable: false, writable: false });
return result
}
var handler = {
apply: function (target, thisArg, args) {
return constructDate(args)
},
construct: function (target, args, newTarget) {
return constructDate(args)
},
get: function(target, property, receiver) {
if (property == "now") {
return mockDateNow;
}
if (property == "prototype") {
return origDate.prototype
}
},
}
Date = new Proxy(Date, handler);
})();
// Mock performace.now().
(function () {
performance.now = function () { return 1.2; }
})();
// Mock stack traces.
Error.prepareStackTrace = function (error, structuredStackTrace) {
return "";
};
Object.defineProperty(
Error, 'prepareStackTrace', { configurable: false, writable: false });
// Mock buffer access in float typed arrays because of varying NaN patterns.
// Note, for now we just use noop forwarding proxies, because they already
// turn off optimizations.
(function () {
var mock = function(arrayType) {
var handler = {
construct: function(target, args) {
var obj = new (Function.prototype.bind.apply(arrayType, [null].concat(args)));
return new Proxy(obj, {
get: function(x, prop) {
if (typeof x[prop] == "function")
return x[prop].bind(obj)
return x[prop];
},
});
},
};
return new Proxy(arrayType, handler);
}
Float32Array = mock(Float32Array);
Float64Array = mock(Float64Array);
})();
// Mock Worker.
(function () {
var index = 0;
// TODO(machenbach): Randomize this for each test case, but keep stable
// during comparison. Also data and random above.
var workerMessages = [
undefined, 0, -1, "", "foo", 42, [], {}, [0], {"x": 0}
];
Worker = function(code){
try {
print(prettyPrinted(eval(code)));
} catch(e) {
print(prettyPrinted(e));
}
this.getMessage = function(){
index = (index + 1) % 10;
return workerMessages[index];
}
this.postMessage = function(msg){
print(prettyPrinted(msg));
}
};
})();