v8/test/mjsunit/es6/large-classes-properties.js
Jakob Kummerow b823bf1ba6 [test][cleanup] Revive --time, speed up some tests
This reimplements the "--time" option of run-tests.py to print the
20 slowest tests, on top of json_test_results infrastructure just
like the bots do it.
Additionally this CL speeds up a bunch of slow tests.

Bug: v8:9396
Change-Id: I40797d2c8c3bfdd310b72f15cd1a035844b7c6f3
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1803635
Commit-Queue: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#63786}
2019-09-16 11:24:11 +00:00

42 lines
1.3 KiB
JavaScript

// Copyright 2019 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
// This gets very slow with stress flags, and triggers optimization anyway:
// Flags: --nostress-opt --noalways-opt
(function testLargeClassesProperties(){
// This is to test for dictionary mode when there more than
// kMaxNumberOfDescriptors (1024) properties.
const kLimit = 1030;
let evalString = "function f(i) { " +
"let clazz = class { " +
" constructor(i) { this.value = i;";
for (let i = 0; i < kLimit ; i++) {
evalString += "this.property"+i +" = "+i+"; "
}
evalString += "}};" +
" return (new clazz(i)); }; f;";
let fn = eval(evalString);
%PrepareFunctionForOptimization(fn);
assertEquals(fn(1).value, 1);
assertEquals(fn(2).value, 2);
assertEquals(fn(3).value, 3);
%OptimizeFunctionOnNextCall(fn);
assertEquals(fn(4).value, 4);
let instance = fn(1);
assertEquals(Object.getOwnPropertyNames(instance).length, kLimit+1);
// Get and set all properties.
for (let i = 0; i < kLimit; i++) {
const key = "property" + i;
assertEquals(instance[key], i);
const value = "value"+i;
instance[key] = value;
assertEquals(instance[key], value);
}
})();