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'use strict';
self.getterRejects = (t, obj, getterName, target) => {
const getter = Object.getOwnPropertyDescriptor(obj, getterName).get;
return promise_rejects_js(t, TypeError, getter.call(target), getterName + ' should reject with a TypeError');
};
self.getterRejectsForAll = (t, obj, getterName, targets) => {
return Promise.all(targets.map(target => self.getterRejects(t, obj, getterName, target)));
};
self.methodRejects = (t, obj, methodName, target, args) => {
const method = obj[methodName];
return promise_rejects_js(t, TypeError, method.apply(target, args),
methodName + ' should reject with a TypeError');
};
self.methodRejectsForAll = (t, obj, methodName, targets, args) => {
return Promise.all(targets.map(target => self.methodRejects(t, obj, methodName, target, args)));
};
self.getterThrows = (obj, getterName, target) => {
const getter = Object.getOwnPropertyDescriptor(obj, getterName).get;
assert_throws_js(TypeError, () => getter.call(target), getterName + ' should throw a TypeError');
};
self.getterThrowsForAll = (obj, getterName, targets) => {
targets.forEach(target => self.getterThrows(obj, getterName, target));
};
self.methodThrows = (obj, methodName, target, args) => {
const method = obj[methodName];
assert_equals(typeof method, 'function', methodName + ' should exist');
assert_throws_js(TypeError, () => method.apply(target, args), methodName + ' should throw a TypeError');
};
self.methodThrowsForAll = (obj, methodName, targets, args) => {
targets.forEach(target => self.methodThrows(obj, methodName, target, args));
};
self.constructorThrowsForAll = (constructor, firstArgs) => {
firstArgs.forEach(firstArg => assert_throws_js(TypeError, () => new constructor(firstArg),
'constructor should throw a TypeError'));
};
self.garbageCollect = () => {
if (self.gc) {
// Use --expose_gc for V8 (and Node.js)
// to pass this flag at chrome launch use: --js-flags="--expose-gc"
// Exposed in SpiderMonkey shell as well
self.gc();
} else if (self.GCController) {
// Present in some WebKit development environments
GCController.collect();
} else {
console.warn('Tests are running without the ability to do manual garbage collection. They will still work, but ' +
'coverage will be suboptimal.');
/* eslint-enable no-console */
}
};
self.delay = ms => new Promise(resolve => step_timeout(resolve, ms));
// For tests which verify that the implementation doesn't do something it shouldn't, it's better not to use a
// timeout. Instead, assume that any reasonable implementation is going to finish work after 2 times around the event
// loop, and use flushAsyncEvents().then(() => assert_array_equals(...));
// Some tests include promise resolutions which may mean the test code takes a couple of event loop visits itself. So go
// around an extra 2 times to avoid complicating those tests.
self.flushAsyncEvents = () => delay(0).then(() => delay(0)).then(() => delay(0)).then(() => delay(0));
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