71 lines
2.7 KiB
TypeScript
71 lines
2.7 KiB
TypeScript
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// Copyright 2021 Signal Messenger, LLC
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// SPDX-License-Identifier: AGPL-3.0-only
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import { assert } from 'chai';
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import { graphemeAndLinkAwareSlice } from '../../util/graphemeAndLinkAwareSlice';
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describe('graphemeAndLinkAwareSlice', () => {
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it('returns entire string when shorter than maximum', () => {
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const shortString = 'Hello, Signal!';
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const result = graphemeAndLinkAwareSlice(shortString, 50);
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assert.strictEqual(result.text, shortString);
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assert.isFalse(result.hasReadMore);
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});
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it('should return string longer than max but within buffer', () => {
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const input = 'Hello, Signal!';
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const result = graphemeAndLinkAwareSlice(input, 5, 10);
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assert.strictEqual(result.text, input);
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assert.isFalse(result.hasReadMore);
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});
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it('should include entire url and detect no more to read', () => {
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const input = 'Hello, Signal! https://signal.org';
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const result = graphemeAndLinkAwareSlice(input, 16, 0);
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assert.strictEqual(result.text, input);
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assert.isFalse(result.hasReadMore);
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});
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it('should include entire url and detect more to read', () => {
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const input = 'Hello, Signal! https://signal.org additional text';
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const inputProperlyTruncated = 'Hello, Signal! https://signal.org';
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const result = graphemeAndLinkAwareSlice(input, 16, 0);
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assert.strictEqual(result.text, inputProperlyTruncated);
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assert.isTrue(result.hasReadMore);
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});
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it('should truncate normally when url present after truncation', () => {
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const input = 'Hello, Signal! https://signal.org additional text';
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const inputProperlyTruncated = 'Hello, Signal!';
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const result = graphemeAndLinkAwareSlice(input, 14, 0);
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assert.strictEqual(result.text, inputProperlyTruncated);
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assert.isTrue(result.hasReadMore);
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});
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it('truncates after url when url present before and at truncation point', () => {
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const input =
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'Hello, Signal! https://signal.org additional text https://example.com/example more text';
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const inputProperlyTruncated =
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'Hello, Signal! https://signal.org additional text https://example.com/example';
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const result = graphemeAndLinkAwareSlice(input, 55, 0);
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assert.strictEqual(result.text, inputProperlyTruncated);
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assert.isTrue(result.hasReadMore);
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});
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it('truncates after url when url present at and after truncation point', () => {
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const input =
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'Hello, Signal! https://signal.org additional text https://example.com/example more text';
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const inputProperlyTruncated = 'Hello, Signal! https://signal.org';
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const result = graphemeAndLinkAwareSlice(input, 26, 0);
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assert.strictEqual(result.text, inputProperlyTruncated);
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assert.isTrue(result.hasReadMore);
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});
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});
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