59 lines
1.8 KiB
JavaScript
59 lines
1.8 KiB
JavaScript
/**
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* Copyright (c) 2013-present, Facebook, Inc.
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* All rights reserved.
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*
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* This source code is licensed under the BSD-style license found in the
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* LICENSE file in the root directory of this source tree. An additional grant
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* of patent rights can be found in the PATENTS file in the same directory.
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*
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*/
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'use strict';
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jest.unmock('truncate');
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describe('truncate', () => {
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var truncate = require('truncate');
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it('should truncate', () => {
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expect(truncate('Hello, world.', 5))
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.toBe('He...');
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});
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it('should not truncate', () => {
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expect(truncate('Hello, world.', 50))
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.toBe('Hello, world.');
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});
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it('should not truncate more than minDelta chars.', () => {
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expect(truncate('Hello, world.', 7, {minDelta: 10}))
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.toBe('Hello, world.');
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expect(truncate('Hello, world.', 7, {minDelta: 9}))
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.toBe('Hell...');
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});
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it('should break in the middle of words', () => {
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expect(truncate('Hello, world. How are you?', 18, {breakOnWords: false}))
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.toBe('Hello, world. H...');
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expect(truncate('Hello, world.\nHow are you?', 18, {breakOnWords: false}))
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.toBe('Hello, world.\nHo...');
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});
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it('should break at word boundaries', () => {
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expect(truncate('Hello, world. How are you?', 18, {breakOnWords: true}))
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.toBe('Hello, world....');
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expect(truncate('Hello, world.\nHow are you?', 18, {breakOnWords: true}))
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.toBe('Hello, world....');
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});
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it('should uses custom elipses', () => {
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expect(truncate('Hello, world.', 9, {elipsis: '·'}))
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.toBe('He·');
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});
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it('shouldn\'t barf with weird input', () => {
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expect(truncate('Hello, world.', 0))
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.toBe('Hello,...');
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expect(truncate('Hello, world.', -132))
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.toBe('...');
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expect(truncate('', 0))
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.toBe('');
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expect(truncate(null, 0))
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.toBe(null);
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});
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});
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