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163 changes: 163 additions & 0 deletions
163
x-pack/plugins/security_solution/public/common/components/line_clamp/index.test.tsx
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,163 @@ | ||
| /* | ||
| * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one | ||
| * or more contributor license agreements. Licensed under the Elastic License | ||
| * 2.0; you may not use this file except in compliance with the Elastic License | ||
| * 2.0. | ||
| */ | ||
|
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| import { mount } from 'enzyme'; | ||
| import { repeat } from 'lodash/fp'; | ||
| import React from 'react'; | ||
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| import { LineClamp } from '.'; | ||
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| describe('LineClamp', () => { | ||
| const message = repeat(1000, 'abcdefghij '); // 10 characters, with a trailing space | ||
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| describe('no overflow', () => { | ||
| test('it does NOT render the expanded line clamp when isOverflow is falsy', () => { | ||
| const wrapper = mount(<LineClamp content={message} />); | ||
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| expect(wrapper.find('[data-test-subj="expanded-line-clamp"]').exists()).toBe(false); | ||
| }); | ||
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| test('it does NOT render the styled line clamp expanded when isOverflow is falsy', () => { | ||
| const wrapper = mount(<LineClamp content={message} />); | ||
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| expect(wrapper.find('[data-test-subj="styled-line-clamp"]').exists()).toBe(false); | ||
| }); | ||
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| test('it renders the default line clamp when isOverflow is falsy', () => { | ||
| const wrapper = mount(<LineClamp content={message} />); | ||
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| expect(wrapper.find('[data-test-subj="default-line-clamp"]').first().text()).toBe(message); | ||
| }); | ||
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| test('it does NOT render the `Read More` button when isOverflow is falsy', () => { | ||
| const wrapper = mount(<LineClamp content={message} />); | ||
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| expect(wrapper.find('[data-test-subj="summary-view-readmore"]').exists()).toBe(false); | ||
| }); | ||
| }); | ||
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| describe('overflow', () => { | ||
| const clientHeight = 400; | ||
| const scrollHeight = clientHeight + 100; // scrollHeight is > clientHeight | ||
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| beforeAll(() => { | ||
| Object.defineProperty(HTMLElement.prototype, 'clientHeight', { | ||
| configurable: true, | ||
| value: clientHeight, | ||
| }); | ||
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| Object.defineProperty(HTMLElement.prototype, 'scrollHeight', { | ||
| configurable: true, | ||
| value: scrollHeight, | ||
| }); | ||
| }); | ||
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| test('it does NOT render the expanded line clamp by default when isOverflow is true', () => { | ||
| const wrapper = mount(<LineClamp content={message} />); | ||
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| expect(wrapper.find('[data-test-subj="expanded-line-clamp"]').exists()).toBe(false); | ||
| }); | ||
|
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| test('it renders the styled line clamp when isOverflow is true', () => { | ||
| const wrapper = mount(<LineClamp content={message} />); | ||
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| expect(wrapper.find('[data-test-subj="styled-line-clamp"]').first().text()).toBe(message); | ||
| }); | ||
|
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| test('it does NOT render the default line clamp when isOverflow is true', () => { | ||
| const wrapper = mount(<LineClamp content={message} />); | ||
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| expect(wrapper.find('[data-test-subj="default-line-clamp"]').exists()).toBe(false); | ||
| }); | ||
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| test('it renders the `Read More` button with the expected (default) text when isOverflow is true', () => { | ||
| const wrapper = mount(<LineClamp content={message} />); | ||
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| expect(wrapper.find('[data-test-subj="summary-view-readmore"]').first().text()).toBe( | ||
| 'Read More' | ||
| ); | ||
| }); | ||
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| describe('clicking the Read More button', () => { | ||
| test('it displays the `Read Less` button text after the user clicks the `Read More` button when isOverflow is true', () => { | ||
| const wrapper = mount(<LineClamp content={message} />); | ||
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| wrapper.find('[data-test-subj="summary-view-readmore"]').first().simulate('click'); | ||
| wrapper.update(); | ||
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| expect(wrapper.find('[data-test-subj="summary-view-readmore"]').first().text()).toBe( | ||
| 'Read Less' | ||
| ); | ||
| }); | ||
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| test('it renders the expanded content after the user clicks the `Read More` button when isOverflow is true', () => { | ||
| const wrapper = mount(<LineClamp content={message} />); | ||
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| wrapper.find('[data-test-subj="summary-view-readmore"]').first().simulate('click'); | ||
| wrapper.update(); | ||
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| expect(wrapper.find('[data-test-subj="expanded-line-clamp"]').first().text()).toBe(message); | ||
| }); | ||
| }); | ||
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| test('it renders the expanded content with a max-height of one third the view height when isOverflow is true', () => { | ||
| const wrapper = mount(<LineClamp content={message} />); | ||
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| wrapper.find('[data-test-subj="summary-view-readmore"]').first().simulate('click'); | ||
| wrapper.update(); | ||
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| expect(wrapper.find('[data-test-subj="expanded-line-clamp"]').first()).toHaveStyleRule( | ||
| 'max-height', | ||
| '33vh' | ||
| ); | ||
| }); | ||
|
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| test('it automatically vertically scrolls the content when isOverflow is true', () => { | ||
| const wrapper = mount(<LineClamp content={message} />); | ||
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| wrapper.find('[data-test-subj="summary-view-readmore"]').first().simulate('click'); | ||
| wrapper.update(); | ||
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| expect(wrapper.find('[data-test-subj="expanded-line-clamp"]').first()).toHaveStyleRule( | ||
| 'overflow-y', | ||
| 'auto' | ||
| ); | ||
| }); | ||
|
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| test('it does NOT render the styled line clamp after the user clicks the `Read More` button when isOverflow is true', () => { | ||
| const wrapper = mount(<LineClamp content={message} />); | ||
|
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| wrapper.find('[data-test-subj="summary-view-readmore"]').first().simulate('click'); | ||
| wrapper.update(); | ||
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| expect(wrapper.find('[data-test-subj="styled-line-clamp"]').exists()).toBe(false); | ||
| }); | ||
|
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| test('it does NOT render the default line clamp after the user clicks the `Read More` button when isOverflow is true', () => { | ||
| const wrapper = mount(<LineClamp content={message} />); | ||
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| wrapper.find('[data-test-subj="summary-view-readmore"]').first().simulate('click'); | ||
| wrapper.update(); | ||
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| expect(wrapper.find('[data-test-subj="default-line-clamp"]').exists()).toBe(false); | ||
| }); | ||
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| test('it once again displays the `Read More` button text after the user clicks the `Read Less` when isOverflow is true', () => { | ||
| const wrapper = mount(<LineClamp content={message} />); | ||
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| wrapper.find('[data-test-subj="summary-view-readmore"]').first().simulate('click'); | ||
| wrapper.update(); // 1st toggle | ||
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| wrapper.find('[data-test-subj="summary-view-readmore"]').first().simulate('click'); | ||
| wrapper.update(); // 2nd toggle | ||
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| expect(wrapper.find('[data-test-subj="summary-view-readmore"]').first().text()).toBe( | ||
| 'Read More' // after the 2nd toggle, the button once-again says `Read More` | ||
| ); | ||
| }); | ||
| }); | ||
| }); |
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