e76e44f088
Add position to the return of %SegmentIterator%.next() which newly added to the spec in https://github.com/tc39/proposal-intl-segmenter/pull/42 Bug: v8:8305 Cq-Include-Trybots: luci.v8.try:v8_linux_noi18n_rel_ng Change-Id: I8de7102acb670a6c529ab3e35601c78a8dc7703c Reviewed-on: https://chromium-review.googlesource.com/c/1278636 Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org> Reviewed-by: Daniel Ehrenberg <littledan@chromium.org> Commit-Queue: Frank Tang <ftang@chromium.org> Cr-Commit-Position: refs/heads/master@{#56963}
92 lines
3.2 KiB
JavaScript
92 lines
3.2 KiB
JavaScript
// Copyright 2018 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Flags: --harmony-intl-segmenter
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let seg = new Intl.Segmenter();
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let descriptor = Object.getOwnPropertyDescriptor(
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Intl.Segmenter, "supportedLocalesOf");
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assertTrue(descriptor.writable);
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assertFalse(descriptor.enumerable);
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assertTrue(descriptor.configurable);
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// ecma402 #sec-Intl.Segmenter.prototype
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// Intl.Segmenter.prototype
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// The value of Intl.Segmenter.prototype is %SegmenterPrototype%.
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// This property has the attributes
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// { [[Writable]]: false, [[Enumerable]]: false, [[Configurable]]: false }.
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descriptor = Object.getOwnPropertyDescriptor(Intl.Segmenter, "prototype");
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assertFalse(descriptor.writable);
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assertFalse(descriptor.enumerable);
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assertFalse(descriptor.configurable);
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for (let func of ["segment", "resolvedOptions"]) {
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let descriptor = Object.getOwnPropertyDescriptor(
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Intl.Segmenter.prototype, func);
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assertTrue(descriptor.writable);
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assertFalse(descriptor.enumerable);
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assertTrue(descriptor.configurable);
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}
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let segmentIterator = seg.segment('text');
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let prototype = Object.getPrototypeOf(segmentIterator);
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for (let func of ["next", "following", "preceding"]) {
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let descriptor = Object.getOwnPropertyDescriptor(prototype, func);
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assertTrue(descriptor.writable);
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assertFalse(descriptor.enumerable);
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assertTrue(descriptor.configurable);
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}
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function checkGetterProperty(prototype, property) {
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let desc = Object.getOwnPropertyDescriptor(prototype, property);
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assertEquals(`get ${property}`, desc.get.name);
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assertEquals('function', typeof desc.get)
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assertEquals(undefined, desc.set);
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assertFalse(desc.enumerable);
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assertTrue(desc.configurable);
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}
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// Test the descriptor is correct for properties.
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checkGetterProperty(prototype, 'position');
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checkGetterProperty(prototype, 'breakType');
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// Test the SegmentIteratorPrototype methods are called with same
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// receiver and won't throw.
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assertDoesNotThrow(() => prototype.next.call(segmentIterator));
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assertDoesNotThrow(() => prototype.following.call(segmentIterator));
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assertDoesNotThrow(() => prototype.preceding.call(segmentIterator));
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// Test the SegmentIteratorPrototype methods are called with a different
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// receiver and correctly throw.
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var otherReceivers = [
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1, 123.45, undefined, null, "string", true, false,
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Intl, Intl.Segmenter, Intl.Segmenter.prototype,
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prototype,
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new Intl.Segmenter(),
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new Intl.Collator(),
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new Intl.DateTimeFormat(),
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new Intl.NumberFormat(),
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];
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for (let rec of otherReceivers) {
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assertThrows(() => prototype.next.call(rec), TypeError);
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assertThrows(() => prototype.following.call(rec), TypeError);
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assertThrows(() => prototype.preceding.call(rec), TypeError);
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}
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// Check the property of the return object of next()
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let nextReturn = segmentIterator.next();
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function checkProperty(obj, property) {
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let desc = Object.getOwnPropertyDescriptor(obj, property);
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assertTrue(desc.writable);
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assertTrue(desc.enumerable);
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assertTrue(desc.configurable);
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}
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checkProperty(nextReturn, 'done');
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checkProperty(nextReturn, 'value');
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checkProperty(nextReturn.value, 'segment');
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checkProperty(nextReturn.value, 'breakType');
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checkProperty(nextReturn.value, 'position');
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