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// |reftest| skip-if(!Intl.Segmenter) -- Intl.Segmenter is not enabled unconditionally
// Copyright 2018 Igalia, S.L. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-Intl.Segmenter
description: Checks that Segmenter can be subclassed.
info: |
Intl.Segmenter ( [ locales [ , options ] ] )
2. Let segmenter be ? OrdinaryCreateFromConstructor(NewTarget, "%SegmenterPrototype%", « [[InitializedSegmenter]] »).
includes: [compareArray.js]
features: [Intl.Segmenter]
---*/
function segments(iterator) {
return [...iterator].map(result => result.segment);
}
class CustomSegmenter extends Intl.Segmenter {
constructor(locales, options) {
super(locales, options);
this.isCustom = true;
}
}
const locale = "de";
const value = "Hello";
const real_segmenter = new Intl.Segmenter(locale);
assert.sameValue(real_segmenter.isCustom, undefined, "Custom property");
const custom_segmenter = new CustomSegmenter(locale);
assert.sameValue(custom_segmenter.isCustom, true, "Custom property");
assert.compareArray(segments(custom_segmenter.segment(value)),
segments(real_segmenter.segment(value)),
"Direct call");
assert.compareArray(segments(Intl.Segmenter.prototype.segment.call(custom_segmenter, value)),
segments(Intl.Segmenter.prototype.segment.call(real_segmenter, value)),
"Indirect call");
assert.sameValue(Object.getPrototypeOf(custom_segmenter), CustomSegmenter.prototype, "Prototype");
assert.sameValue(Object.getPrototypeOf(CustomSegmenter), Intl.Segmenter,
"Object.getPrototypeOf(CustomSegmenter) returns Intl.Segmenter");
assert.sameValue(Object.getPrototypeOf(CustomSegmenter.prototype), Intl.Segmenter.prototype,
"Object.getPrototypeOf(CustomSegmenter.prototype) returns Intl.Segmenter.prototype");
assert.sameValue(custom_segmenter instanceof Intl.Segmenter, true,
"The result of `custom_segmenter instanceof Intl.Segmenter` is true");
assert.throws(TypeError, function() {
CustomSegmenter();
});
reportCompare(0, 0);