v8/test/fuzz-natives/base.js
danno@chromium.org afcfa7d2b7 Keep new arrays allocated with 'new Array(N)' in fast mode (revisited)
Also explicit length setting with a.length = N should remain in fast mode.

R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/416403002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22645 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2014-07-28 13:12:26 +00:00

104 lines
2.8 KiB
JavaScript

// Copyright 2014 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.
// Flags: --allow-natives-syntax
// TODO(jkummerow): There are many ways to improve these tests, e.g.:
// - more variance in randomized inputs
// - better time complexity management
// - better code readability and documentation of intentions.
var RUN_WITH_ALL_ARGUMENT_ENTRIES = false;
var kOnManyArgumentsRemove = 5;
function makeArguments() {
var result = [ ];
result.push(17);
result.push(-31);
result.push(new Array(100));
var a = %NormalizeElements([]);
a.length = 100003;
result.push(a);
result.push(Number.MIN_VALUE);
result.push("whoops");
result.push("x");
result.push({"x": 1, "y": 2});
var slowCaseObj = {"a": 3, "b": 4, "c": 5};
delete slowCaseObj.c;
result.push(slowCaseObj);
result.push(function () { return 8; });
return result;
}
var kArgObjects = makeArguments().length;
function makeFunction(name, argc) {
var args = [];
for (var i = 0; i < argc; i++)
args.push("x" + i);
var argsStr = args.join(", ");
return new Function(argsStr,
"return %" + name + "(" + argsStr + ");");
}
function testArgumentCount(name, argc) {
for (var i = 0; i < 10; i++) {
var func = null;
try {
func = makeFunction(name, i);
} catch (e) {
if (e != "SyntaxError: Illegal access") throw e;
}
if (func === null && i == argc) {
throw "unexpected exception";
}
var args = [ ];
for (var j = 0; j < i; j++)
args.push(0);
try {
func.apply(void 0, args);
} catch (e) {
// we don't care what happens as long as we don't crash
}
}
}
function testArgumentTypes(name, argc) {
var type = 0;
var hasMore = true;
var func = makeFunction(name, argc);
while (hasMore) {
var argPool = makeArguments();
// When we have 5 or more arguments we lower the amount of tests cases
// by randomly removing kOnManyArgumentsRemove entries
var numArguments = RUN_WITH_ALL_ARGUMENT_ENTRIES ?
kArgObjects : kArgObjects - kOnManyArgumentsRemove;
if (kArgObjects >= 5 && !RUN_WITH_ALL_ARGUMENT_ENTRIES) {
for (var i = 0; i < kOnManyArgumentsRemove; i++) {
var rand = Math.floor(Math.random() * (kArgObjects - i));
argPool.splice(rand, 1);
}
}
var current = type;
hasMore = false;
var argList = [ ];
for (var i = 0; i < argc; i++) {
var index = current % numArguments;
current = (current / numArguments) << 0;
if (index != (numArguments - 1))
hasMore = true;
argList.push(argPool[index]);
}
try {
func.apply(void 0, argList);
} catch (e) {
// we don't care what happens as long as we don't crash
}
type++;
}
}
testArgumentCount(NAME, ARGC);
testArgumentTypes(NAME, ARGC);