mirror of
https://github.com/jerryscript-project/jerryscript.git
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fde0d556ac
A list of changes: - 'es2015-subset' profile is deprecated, and an 'es.next' profile is added. - The default profile is changed to 'es.next' - Renamed the JERRY_ES2015 guard to JERRY_ESNEXT - Renamed JERRY_ES2015_BUILTIN_* guards to JERRY_BUILTIN_* - Moved es2015 specific tests to a new 'es.next' subdirectory - Updated docs, targets, and test runners to reflect these changes Resolves #3737. JerryScript-DCO-1.0-Signed-off-by: Dániel Bátyai dbatyai@inf.u-szeged.hu
98 lines
2.8 KiB
JavaScript
98 lines
2.8 KiB
JavaScript
// Copyright JS Foundation and other contributors, http://js.foundation
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// Test %GeneratorPrototype%
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(function () {
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function* generatorFn(){}
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var ownProto = Object.getPrototypeOf(generatorFn());
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var sharedProto = Object.getPrototypeOf(ownProto);
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assert(ownProto === generatorFn.prototype);
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assert(sharedProto !== Object.prototype);
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assert(sharedProto === Object.getPrototypeOf(function*(){}.prototype));
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assert(sharedProto.hasOwnProperty('next'));
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})();
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// Test %GeneratorPrototype% prototype chain
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(function () {
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function* generatorFn(){}
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var g = generatorFn();
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var ownProto = Object.getPrototypeOf(g);
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var sharedProto = Object.getPrototypeOf(ownProto);
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var iterProto = Object.getPrototypeOf(sharedProto);
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assert(ownProto === generatorFn.prototype);
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assert(iterProto.hasOwnProperty(Symbol.iterator));
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assert(!sharedProto.hasOwnProperty(Symbol.iterator));
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assert(!ownProto.hasOwnProperty(Symbol.iterator));
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assert(g[Symbol.iterator]() === g);
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})();
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// Test %GeneratorPrototype% prototype chain
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(function () {
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function* g(){}
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var iterator = new g.constructor("a","b","c","() => yield\n yield a; yield b; yield c;")(1,2,3);
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var item = iterator.next();
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assert(item.value === 1);
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assert(item.done === false);
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item = iterator.next();
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assert(item.value === 2);
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assert(item.done === false);
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item = iterator.next();
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assert(item.value === 3);
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assert(item.done === false);
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item = iterator.next();
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assert(item.value === undefined);
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assert(item.done === true);
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assert(g.constructor === (function*(){}).constructor);
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})();
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// Test GeneratorFunction parsing
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(function () {
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function *f() {};
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try {
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Object.getPrototypeOf(f).constructor("yield", "");
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} catch (e) {
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assert(e instanceof SyntaxError);
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}
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})();
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// Test correct property membership
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(function () {
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function *f() {};
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Object.getPrototypeOf(f).xx = 5;
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assert(Object.getPrototypeOf(f).prototype.constructor.xx === 5);
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})();
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// Test GetPrototypeFromConstructor
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(function () {
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function *f() {};
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var originalProto = f.prototype;
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f.prototype = 5;
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assert(Object.getPrototypeOf(f()) === Object.getPrototypeOf(originalProto));
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var fakeProto = { x : 6 };
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f.prototype = fakeProto;
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assert(Object.getPrototypeOf(f()) === fakeProto);
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assert(f.next === undefined);
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})();
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