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fix: toBeVisible ignoring Details element (#184)
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lourenci authored and gnapse committed Jan 22, 2020
1 parent d87dfee commit e4d61c2
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2 changes: 2 additions & 0 deletions README.md
Original file line number Diff line number Diff line change
Expand Up @@ -46,6 +46,7 @@ clear to read and to maintain.
<!-- START doctoc generated TOC please keep comment here to allow auto update -->
<!-- DON'T EDIT THIS SECTION, INSTEAD RE-RUN doctoc TO UPDATE -->


- [Installation](#installation)
- [Usage](#usage)
- [Custom matchers](#custom-matchers)
Expand Down Expand Up @@ -378,6 +379,7 @@ An element is visible if **all** the following conditions are met:
- it does not have the
[`hidden`](https://developer.mozilla.org/en-US/docs/Web/HTML/Global_attributes/hidden)
attribute
- if `<details />` it has the `open` attribute

#### Examples

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276 changes: 244 additions & 32 deletions src/__tests__/to-be-visible.js
Original file line number Diff line number Diff line change
@@ -1,35 +1,247 @@
import {render} from './helpers/test-utils'

test('.toBeVisible', () => {
const {container} = render(`
<div>
<header>
<h1 style="display: none">Main title</h1>
<h2 style="visibility: hidden">Secondary title</h2>
<h3 style="visibility: collapse">Secondary title</h3>
<h4 style="opacity: 0">Secondary title</h4>
<h5 style="opacity: 0.1">Secondary title</h5>
</header>
<button hidden>Hidden button</button>
<section style="display: block; visibility: hidden">
<p>Hello <strong>World</strong></p>
</section>
</div>
`)

expect(container.querySelector('header')).toBeVisible()
expect(container.querySelector('h1')).not.toBeVisible()
expect(container.querySelector('h2')).not.toBeVisible()
expect(container.querySelector('h3')).not.toBeVisible()
expect(container.querySelector('h4')).not.toBeVisible()
expect(container.querySelector('h5')).toBeVisible()
expect(container.querySelector('button')).not.toBeVisible()
expect(container.querySelector('strong')).not.toBeVisible()

expect(() =>
expect(container.querySelector('header')).not.toBeVisible(),
).toThrowError()
expect(() =>
expect(container.querySelector('p')).toBeVisible(),
).toThrowError()
// eslint-disable-next-line max-lines-per-function
describe('.toBeVisible', () => {
it('returns the visibility of an element', () => {
const {container} = render(`
<div>
<header>
<h1 style="display: none">Main title</h1>
<h2 style="visibility: hidden">Secondary title</h2>
<h3 style="visibility: collapse">Secondary title</h3>
<h4 style="opacity: 0">Secondary title</h4>
<h5 style="opacity: 0.1">Secondary title</h5>
</header>
<button hidden>Hidden button</button>
<section style="display: block; visibility: hidden">
<p>Hello <strong>World</strong></p>
</section>
</div>
`)

expect(container.querySelector('header')).toBeVisible()
expect(container.querySelector('h1')).not.toBeVisible()
expect(container.querySelector('h2')).not.toBeVisible()
expect(container.querySelector('h3')).not.toBeVisible()
expect(container.querySelector('h4')).not.toBeVisible()
expect(container.querySelector('h5')).toBeVisible()
expect(container.querySelector('button')).not.toBeVisible()
expect(container.querySelector('strong')).not.toBeVisible()

expect(() =>
expect(container.querySelector('header')).not.toBeVisible(),
).toThrowError()
expect(() =>
expect(container.querySelector('p')).toBeVisible(),
).toThrowError()
})

// eslint-disable-next-line max-lines-per-function
describe('with a <details /> element', () => {
let subject

afterEach(() => {
subject = undefined
})

describe('when the details is opened', () => {
beforeEach(() => {
subject = render(`
<details open>
<summary>Title of visible</summary>
<div>Visible <small>details</small></div>
</details>
`)
})

it('returns true to the details content', () => {
expect(subject.container.querySelector('div')).toBeVisible()
})

it('returns true to the most inner details content', () => {
expect(subject.container.querySelector('small')).toBeVisible()
})

it('returns true to the details summary', () => {
expect(subject.container.querySelector('summary')).toBeVisible()
})

describe('when the user clicks on the summary', () => {
beforeEach(() => subject.container.querySelector('summary').click())

it('returns false to the details content', () => {
expect(subject.container.querySelector('div')).not.toBeVisible()
})

it('returns true to the details summary', () => {
expect(subject.container.querySelector('summary')).toBeVisible()
})
})
})

describe('when the details is not opened', () => {
beforeEach(() => {
subject = render(`
<details>
<summary>Title of hidden</summary>
<div>Hidden details</div>
</details>
`)
})

it('returns false to the details content', () => {
expect(subject.container.querySelector('div')).not.toBeVisible()
})

it('returns true to the summary content', () => {
expect(subject.container.querySelector('summary')).toBeVisible()
})

describe('when the user clicks on the summary', () => {
beforeEach(() => subject.container.querySelector('summary').click())

it('returns true to the details content', () => {
expect(subject.container.querySelector('div')).toBeVisible()
})

it('returns true to the details summary', () => {
expect(subject.container.querySelector('summary')).toBeVisible()
})
})
})

describe('when the details is opened but it is hidden', () => {
beforeEach(() => {
subject = render(`
<details open hidden>
<summary>Title of visible</summary>
<div>Visible details</div>
</details>
`)
})

it('returns false to the details content', () => {
expect(subject.container.querySelector('div')).not.toBeVisible()
})

it('returns false to the details summary', () => {
expect(subject.container.querySelector('summary')).not.toBeVisible()
})
})

describe('with a nested <details /> element', () => {
describe('when the nested <details /> is opened', () => {
beforeEach(() => {
subject = render(`
<details open>
<summary>Title of visible</summary>
<div>Outer content</div>
<details open>
<summary>Title of nested details</summary>
<div>Inner content</div>
</details>
</details>
`)
})

it('returns true to the nested details content', () => {
expect(
subject.container.querySelector('details > details > div'),
).toBeVisible()
})

it('returns true to the nested details summary', () => {
expect(
subject.container.querySelector('details > details > summary'),
).toBeVisible()
})

it('returns true to the outer details content', () => {
expect(subject.container.querySelector('details > div')).toBeVisible()
})

it('returns true to the outer details summary', () => {
expect(
subject.container.querySelector('details > summary'),
).toBeVisible()
})
})

describe('when the nested <details /> is not opened', () => {
beforeEach(() => {
subject = render(`
<details open>
<summary>Title of visible</summary>
<div>Outer content</div>
<details>
<summary>Title of nested details</summary>
<div>Inner content</div>
</details>
</details>
`)
})

it('returns false to the nested details content', () => {
expect(
subject.container.querySelector('details > details > div'),
).not.toBeVisible()
})

it('returns true to the nested details summary', () => {
expect(
subject.container.querySelector('details > details > summary'),
).toBeVisible()
})

it('returns true to the outer details content', () => {
expect(subject.container.querySelector('details > div')).toBeVisible()
})

it('returns true to the outer details summary', () => {
expect(
subject.container.querySelector('details > summary'),
).toBeVisible()
})
})

describe('when the outer <details /> is not opened and the nested one is opened', () => {
beforeEach(() => {
subject = render(`
<details>
<summary>Title of visible</summary>
<div>Outer content</div>
<details open>
<summary>Title of nested details</summary>
<div>Inner content</div>
</details>
</details>
`)
})

it('returns false to the nested details content', () => {
expect(
subject.container.querySelector('details > details > div'),
).not.toBeVisible()
})

it('returns false to the nested details summary', () => {
expect(
subject.container.querySelector('details > details > summary'),
).not.toBeVisible()
})

it('returns false to the outer details content', () => {
expect(
subject.container.querySelector('details > div'),
).not.toBeVisible()
})

it('returns true to the outer details summary', () => {
expect(
subject.container.querySelector('details > summary'),
).toBeVisible()
})
})
})
})
})
15 changes: 12 additions & 3 deletions src/to-be-visible.js
Original file line number Diff line number Diff line change
Expand Up @@ -14,11 +14,20 @@ function isStyleVisible(element) {
)
}

function isElementVisible(element) {
function isAttributeVisible(element, previousElement) {
return (
isStyleVisible(element) &&
!element.hasAttribute('hidden') &&
(!element.parentElement || isElementVisible(element.parentElement))
(element.nodeName === 'DETAILS' && previousElement.nodeName !== 'SUMMARY'
? element.hasAttribute('open')
: true)
)
}

function isElementVisible(element, previousElement) {
return (
isStyleVisible(element) &&
isAttributeVisible(element, previousElement) &&
(!element.parentElement || isElementVisible(element.parentElement, element))
)
}

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