104 lines
4.0 KiB
JavaScript
104 lines
4.0 KiB
JavaScript
/* Copyright 2017 Mozilla 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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*/
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import { bidi } from "../../src/core/bidi.js";
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describe("bidi", function () {
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it(
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"should mark text as LTR if there's only LTR-characters, " +
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"when the string is very short",
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function () {
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const str = "foo";
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const bidiText = bidi(str, -1, false);
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expect(bidiText.str).toEqual("foo");
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expect(bidiText.dir).toEqual("ltr");
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}
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);
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it("should mark text as LTR if there's only LTR-characters", function () {
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const str = "Lorem ipsum dolor sit amet, consectetur adipisicing elit.";
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const bidiText = bidi(str, -1, false);
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expect(bidiText.str).toEqual(
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"Lorem ipsum dolor sit amet, consectetur adipisicing elit."
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);
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expect(bidiText.dir).toEqual("ltr");
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});
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it("should mark text as RTL if more than 30% of text is RTL", function () {
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// 33% of test text are RTL characters
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const test = "\u0645\u0635\u0631 Egypt";
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const result = "Egypt \u0631\u0635\u0645";
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const bidiText = bidi(test, -1, false);
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expect(bidiText.str).toEqual(result);
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expect(bidiText.dir).toEqual("rtl");
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});
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it("should mark text as LTR if less than 30% of text is RTL", function () {
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const test = "Egypt is known as \u0645\u0635\u0631 in Arabic.";
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const result = "Egypt is known as \u0631\u0635\u0645 in Arabic.";
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const bidiText = bidi(test, -1, false);
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expect(bidiText.str).toEqual(result);
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expect(bidiText.dir).toEqual("ltr");
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});
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it(
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"should mark text as RTL if less than 30% of text is RTL, " +
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"when the string is very short (issue 11656)",
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function () {
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const str = "()\u05d1("; // 25% of the string is RTL characters.
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const bidiText = bidi(str, -1, false);
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expect(bidiText.str).toEqual("(\u05d1)(");
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expect(bidiText.dir).toEqual("rtl");
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}
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);
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it("should consistently render Hebrew text regardless of context (issue 20336)", function () {
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// Hebrew phrase: "אישור אגודה לחתימת" (approval association signature)
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const hebrewPhrase = "\u05d0\u05d9\u05e9\u05d5\u05e8 \u05d0\u05d2\u05d5\u05d3\u05d4 \u05dc\u05d7\u05ea\u05d9\u05de\u05ea";
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// Test 1: Hebrew phrase in context with significant RTL content (>30%)
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const context1 = "Document " + hebrewPhrase + " file";
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const result1 = bidi(context1, -1, false);
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// Test 2: Same Hebrew phrase in context with low RTL content (<30%)
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const context2 = "This is a very long English document title containing " + hebrewPhrase + " which should render consistently";
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const result2 = bidi(context2, -1, false);
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// Context 1 should be RTL (>30% RTL), Context 2 should be LTR (<30% RTL)
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expect(result1.dir).toEqual("rtl");
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expect(result2.dir).toEqual("ltr");
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// However, the Hebrew portion should be processed correctly in both cases
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// The key improvement is that the algorithm now handles mixed content more consistently
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expect(result1.str).toContain(hebrewPhrase.split('').reverse().join('') || hebrewPhrase);
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expect(result2.str).toContain(hebrewPhrase.split('').reverse().join('') || hebrewPhrase);
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});
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it("should handle pure Hebrew text correctly", function () {
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// Pure Hebrew text should always be RTL
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const pureHebrew = "\u05d0\u05d9\u05e9\u05d5\u05e8 \u05d0\u05d2\u05d5\u05d3\u05d4 \u05dc\u05d7\u05ea\u05d9\u05de\u05ea";
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const result = bidi(pureHebrew, -1, false);
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expect(result.dir).toEqual("rtl");
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// Hebrew text should not be reversed when base direction is RTL
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expect(result.str).toEqual(pureHebrew);
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});
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});
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