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doc: use async-await to explain APIs in README (#1032)
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@rhysd
rhysd committed Feb 2, 2022
1 parent 25f6cd4 commit c4b429f
Showing 1 changed file with 58 additions and 76 deletions.
134 changes: 58 additions & 76 deletions README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -70,15 +70,15 @@ cd test
Then simply include the following in your first `spec.js`.

```js
const Application = require('spectron').Application
const { Application } = require('spectron')
const assert = require('assert')
const electronPath = require('electron') // Require Electron from the binaries included in node_modules.
const path = require('path')

describe('Application launch', function () {
this.timeout(10000)

beforeEach(function () {
beforeEach(async function () {
this.app = new Application({
// Your electron path can be any binary
// i.e for OSX an example path could be '/Applications/MyApp.app/Contents/MacOS/MyApp'
Expand All @@ -100,21 +100,20 @@ describe('Application launch', function () {
// and the package.json located 1 level above.
args: [path.join(__dirname, '..')]
})
return this.app.start()
await this.app.start()
})

afterEach(function () {
afterEach(async function () {
if (this.app && this.app.isRunning()) {
return this.app.stop()
await this.app.stop()
}
})

it('shows an initial window', function () {
return this.app.client.getWindowCount().then(function (count) {
assert.equal(count, 1)
// Please note that getWindowCount() will return 2 if `dev tools` are opened.
// assert.equal(count, 2)
})
it('shows an initial window', async function () {
const count = await this.app.client.getWindowCount()
assert.equal(count, 1)
// Please note that getWindowCount() will return 2 if `dev tools` are opened.
// assert.equal(count, 2)
})
})
```
Expand Down Expand Up @@ -233,11 +232,9 @@ All the commands return a `Promise`.
So if you wanted to get the text of an element you would do:

```js
app.client.$('#error-alert').then(function (element) {
element.getText().then(function (errorText) {
console.log('The #error-alert text content is ' + errorText)
})
})
const element = await app.client.$('#error-alert')
const errorText = await element.getText()
console.log('The #error-alert text content is ' + errorText)
```

#### electron
Expand Down Expand Up @@ -268,9 +265,8 @@ So if you wanted to check if the current window is visible in your tests you
would do:

```js
app.browserWindow.isVisible().then(function (visible) {
console.log('window is visible? ' + visible)
})
const visible = await app.browserWindow.isVisible()
console.log('window is visible? ' + visible)
```

It is named `browserWindow` instead of `window` so that it doesn't collide
Expand All @@ -283,9 +279,8 @@ returns a `Promise` that resolves to a `Buffer` that is the image data of
screenshot.

```js
app.browserWindow.capturePage().then(function (imageBuffer) {
fs.writeFile('page.png', imageBuffer)
})
const imageBuffer = await app.browserWindow.capturePage()
fs.writeFile('page.png', imageBuffer)
```

#### webContents
Expand All @@ -311,12 +306,12 @@ returns a `Promise` that will raise any errors and resolve to `undefined` when
complete.

```js
app.webContents.savePage('/Users/kevin/page.html', 'HTMLComplete')
.then(function () {
console.log('page saved')
}).catch(function (error) {
console.error('saving page failed', error.message)
})
try {
await app.webContents.savePage('/Users/kevin/page.html', 'HTMLComplete')
console.log('page saved')
catch (error) {
console.error('saving page failed', error.message)
}
```
##### executeJavaScript
Expand All @@ -325,10 +320,8 @@ returns a `Promise` that will resolve with the result of the last statement of t
script.
```js
app.webContents.executeJavaScript('1 + 2')
.then(function (result) {
console.log(result) // prints 3
})
const result = await app.webContents.executeJavaScript('1 + 2')
console.log(result) // prints 3
```
#### mainProcess
Expand All @@ -342,9 +335,8 @@ So if you wanted to get the `argv` for the main process in your tests you would
do:
```js
app.mainProcess.argv().then(function (argv) {
console.log('main process args: ' + argv)
})
const argv = await app.mainProcess.argv()
console.log('main process args: ' + argv)
```
Properties on the `process` are exposed as functions that return promises so
Expand All @@ -362,9 +354,8 @@ So if you wanted to get the environment variables for the renderer process in
your tests you would do:
```js
app.rendererProcess.env().then(function (env) {
console.log('renderer process env variables: ' + env)
})
const env = await app.rendererProcess.env()
console.log('renderer process env variables: ' + env)
```
### Methods
Expand Down Expand Up @@ -406,10 +397,9 @@ after they are returned.
Returns a `Promise` that resolves to an array of string log messages
```js
app.client.getMainProcessLogs().then(function (logs) {
logs.forEach(function (log) {
console.log(log)
})
const logs = await app.client.getMainProcessLogs()
logs.forEach(function (log) {
console.log(log)
})
```
Expand All @@ -421,12 +411,11 @@ after they are returned.
Returns a `Promise` that resolves to an array of log objects.
```js
app.client.getRenderProcessLogs().then(function (logs) {
logs.forEach(function (log) {
console.log(log.message)
console.log(log.source)
console.log(log.level)
})
const logs = await app.client.getRenderProcessLogs()
logs.forEach(function (log) {
console.log(log.message)
console.log(log.source)
console.log(log.level)
})
```
Expand All @@ -435,9 +424,8 @@ app.client.getRenderProcessLogs().then(function (logs) {
Get the selected text in the current window.
```js
app.client.getSelectedText().then(function (selectedText) {
console.log(selectedText)
})
const selectedText = await app.client.getSelectedText()
console.log(selectedText)
```
#### client.getWindowCount()
Expand All @@ -446,9 +434,8 @@ Gets the number of open windows.
`<webview>` tags are also counted as separate windows.
```js
app.client.getWindowCount().then(function (count) {
console.log(count)
})
const count = await app.client.getWindowCount()
console.log(count)
```
#### client.waitUntilTextExists(selector, text, [timeout])
Expand Down Expand Up @@ -520,11 +507,10 @@ Returns an `audit` Object with the following properties:
* `url` - A String URL providing more details about the failed rule
```js
app.client.auditAccessibility().then(function (audit) {
if (audit.failed) {
console.error(audit.message)
}
})
const audit = await app.client.auditAccessibility()
if (audit.failed) {
console.error(audit.message)
}
```
See https://github.com/GoogleChrome/accessibility-developer-tools/wiki/Audit-Rules
Expand All @@ -535,24 +521,20 @@ page and the `<webview>`'s page then you will need to do the following:
```js
// Focus main page and audit it
app.client.windowByIndex(0).then(function() {
app.client.auditAccessibility().then(function (audit) {
if (audit.failed) {
console.error('Main page failed audit')
console.error(audit.message)
}
await app.client.windowByIndex(0)
const audit = await app.client.auditAccessibility()
if (audit.failed) {
console.error('Main page failed audit')
console.error(audit.message)
}

//Focus <webview> tag and audit it
app.client.windowByIndex(1).then(function() {
app.client.auditAccessibility().then(function (audit) {
if (audit.failed) {
console.error('<webview> page failed audit')
console.error(audit.message)
}
})
})
})
})
//Focus <webview> tag and audit it
await app.client.windowByIndex(1)
const audit = await app.client.auditAccessibility()
if (audit.failed) {
console.error('<webview> page failed audit')
console.error(audit.message)
}
```
## Continuous Integration
Expand Down

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