feat(helpers): add seeInClipboard, seeClipboardEquals and clearClipboard

docs/webapi/clearClipboard.mustache

@@ -0,0 +1,8 @@
+Clears the system clipboard.
+
+```js
+I.clearClipboard();
+I.seeClipboardEquals('');
+```
+
+@returns {void} automatically synchronized promise through #recorder

docs/webapi/grabFromClipboard.mustache

@@ -0,0 +1,12 @@
+Grabs the text content of the system clipboard and returns it to test.
+Resumes test execution, so **should be used inside async function with `await`** operator.
+
+```js
+I.click('Copy to clipboard');
+let url = await I.grabFromClipboard();
+```
+
+Reading the clipboard requires a secure context (`https` or `localhost`) and is supported
+in Chromium-based browsers, where read access is granted automatically.
+
+@returns {Promise<string>} the system clipboard contents.

docs/webapi/seeClipboardEquals.mustache

@@ -0,0 +1,12 @@
+Checks that the system clipboard is equal to the given text.
+
+```js
+I.click('Copy to clipboard');
+I.seeClipboardEquals('https://codecept.io');
+```
+
+Reading the clipboard requires a secure context (`https` or `localhost`) and is supported
+in Chromium-based browsers, where read access is granted automatically.
+
+@param {string} text value to check.
+@returns {void} automatically synchronized promise through #recorder

docs/webapi/seeInClipboard.mustache

@@ -0,0 +1,12 @@
+Checks that the system clipboard contains the given text.
+
+```js
+I.click('Copy to clipboard');
+I.seeInClipboard('https://codecept.io');
+```
+
+Reading the clipboard requires a secure context (`https` or `localhost`) and is supported
+in Chromium-based browsers, where read access is granted automatically.
+
+@param {string} text value to check.
+@returns {void} automatically synchronized promise through #recorder

lib/helper/Appium.js

@@ -1534,6 +1534,29 @@ class Appium extends Webdriver {
     return this.browser.closeApp()
   }
 
+  /**
+   * {{> clearClipboard }}
+   *
+   * Appium: support both Android and iOS
+   */
+  async clearClipboard() {
+    if (typeof this.browser.setClipboard !== 'function') return super.clearClipboard()
+    return this.browser.setClipboard('', 'plaintext')
+  }
+
+  /**
+   * {{> grabFromClipboard }}
+   *
+   * Appium: support both Android and iOS
+   */
+  async grabFromClipboard() {
+    if (typeof this.browser.getClipboard !== 'function') return super.grabFromClipboard()
+    const encoded = await this.browser.getClipboard('plaintext')
+    const clipboard = Buffer.from(encoded || '', 'base64').toString('utf8')
+    this.debugSection('Clipboard', clipboard)
+    return clipboard
+  }
+
   /**
    * {{> appendField }}
    *

lib/helper/CDPBrowser.js

@@ -18,6 +18,7 @@ import { isColorProperty, convertColorToRGBA } from '../colorUtils.js'
 import WebElement from '../element/WebElement.js'
 import CDPElementHandle from './extras/CDPElementHandle.js'
 import { checkFocusBeforeType, checkFocusBeforePressKey } from './extras/focusCheck.js'
+import { CLIPBOARD_READ_TIMEOUT_MS, readClipboardScript, writeClipboardScript, clipboardExpression } from './extras/clipboard.js'
 import { dontSeeTraffic, seeTraffic, grabRecordedNetworkTraffics, flushNetworkTraffics } from './network/actions.js'
 import { assembleApng, isPng } from './extras/apngAssembler.js'
 
@@ -1940,6 +1941,89 @@ class CDPBrowser extends Helper {
     }
   }
 
+  /**
+   * Checks that the system clipboard contains the given text.
+   *
+   * ```js
+   * I.click('Copy to clipboard');
+   * I.seeInClipboard('https://codecept.io');
+   * ```
+   *
+   * Reading the clipboard requires a secure context (`https` or `localhost`).
+   *
+   * @param {string} text value to check.
+   * @returns {Promise<void>}
+   */
+  async seeInClipboard(text) {
+    const clipboard = await this.grabFromClipboard()
+    return stringIncludes('clipboard').assert(text, clipboard)
+  }
+
+  /**
+   * Checks that the system clipboard is equal to the given text.
+   *
+   * ```js
+   * I.click('Copy to clipboard');
+   * I.seeClipboardEquals('https://codecept.io');
+   * ```
+   *
+   * Reading the clipboard requires a secure context (`https` or `localhost`).
+   *
+   * @param {string} text value to check.
+   * @returns {Promise<void>}
+   */
+  async seeClipboardEquals(text) {
+    const clipboard = await this.grabFromClipboard()
+    return equals('clipboard').assert(clipboard, text)
+  }
+
+  /**
+   * Clears the system clipboard.
+   *
+   * ```js
+   * I.clearClipboard();
+   * I.seeClipboardEquals('');
+   * ```
+   *
+   * @returns {Promise<void>}
+   */
+  async clearClipboard() {
+    await this._grantClipboardAccess()
+    await this._evaluate(clipboardExpression(writeClipboardScript, ''))
+  }
+
+  /**
+   * Grabs the text content of the system clipboard.
+   * Resumes test execution, so **should be used inside async function with `await`** operator.
+   *
+   * ```js
+   * I.click('Copy to clipboard');
+   * const url = await I.grabFromClipboard();
+   * ```
+   *
+   * @returns {Promise<string>} the system clipboard contents.
+   */
+  async grabFromClipboard() {
+    await this._grantClipboardAccess()
+    const clipboard = await this._evaluate(clipboardExpression(readClipboardScript, CLIPBOARD_READ_TIMEOUT_MS))
+    this.debugSection('Clipboard', clipboard)
+    return clipboard
+  }
+
+  /**
+   * Brings the current target to front and grants it clipboard read/write access, so
+   * `navigator.clipboard` does not reject with a permission or focus error. Failures are ignored:
+   * a browser without `Browser.grantPermissions` surfaces its own error from the read instead.
+   *
+   * @protected
+   */
+  async _grantClipboardAccess() {
+    await this.cdp.send('Page.bringToFront', {}, this.sessionId).catch(() => null)
+    const origin = await this._evaluate('window.location.origin').catch(() => null)
+    if (!origin || !origin.startsWith('http')) return
+    await this.cdp.send('Browser.grantPermissions', { origin, permissions: ['clipboardReadWrite', 'clipboardSanitizedWrite'] }).catch(() => null)
+  }
+
   /**
    * Saves a screenshot to the output folder (set in codecept.conf.ts or codecept.conf.js).
    * Filename is relative to the output folder.

lib/helper/Playwright.js

@@ -8,6 +8,7 @@ import Locator from '../locator.js'
 import recorder from '../recorder.js'
 import store from '../store.js'
 import { checkFocusBeforeType, checkFocusBeforePressKey } from './extras/focusCheck.js'
+import { CLIPBOARD_READ_TIMEOUT_MS, readClipboardScript, writeClipboardScript } from './extras/clipboard.js'
 import { includes as stringIncludes } from '../assert/include.js'
 import { urlEquals, equals } from '../assert/equal.js'
 import { empty } from '../assert/empty.js'
@@ -2659,6 +2660,49 @@ class Playwright extends Helper {
     return this.browserContext.clearCookies()
   }
 
+  /**
+   * {{> seeInClipboard }}
+   */
+  async seeInClipboard(text) {
+    const clipboard = await this.grabFromClipboard()
+    stringIncludes('clipboard').assert(text, clipboard)
+  }
+
+  /**
+   * {{> seeClipboardEquals }}
+   */
+  async seeClipboardEquals(text) {
+    const clipboard = await this.grabFromClipboard()
+    return equals('clipboard').assert(clipboard, text)
+  }
+
+  /**
+   * {{> grabFromClipboard }}
+   */
+  async grabFromClipboard() {
+    await this._grantClipboardAccess()
+    const clipboard = await this.page.evaluate(readClipboardScript, CLIPBOARD_READ_TIMEOUT_MS)
+    this.debugSection('Clipboard', clipboard)
+    return clipboard
+  }
+
+  /**
+   * {{> clearClipboard }}
+   */
+  async clearClipboard() {
+    await this._grantClipboardAccess()
+    return this.page.evaluate(writeClipboardScript, '')
+  }
+
+  async _grantClipboardAccess() {
+    await this.page.bringToFront().catch(() => {})
+    if (this.options.browser !== 'chromium') return
+    await this.page
+      .context()
+      .grantPermissions(['clipboard-read', 'clipboard-write'])
+      .catch(() => {})
+  }
+
   /**
    * Executes a script on the page:
    *

lib/helper/Puppeteer.js

@@ -9,6 +9,7 @@ import Locator from '../locator.js'
 import recorder from '../recorder.js'
 import store from '../store.js'
 import { checkFocusBeforeType, checkFocusBeforePressKey } from './extras/focusCheck.js'
+import { CLIPBOARD_READ_TIMEOUT_MS, readClipboardScript, writeClipboardScript } from './extras/clipboard.js'
 import { includes as stringIncludes } from '../assert/include.js'
 import { urlEquals, equals } from '../assert/equal.js'
 import { empty } from '../assert/empty.js'
@@ -1960,6 +1961,55 @@ class Puppeteer extends Helper {
     return this.page.deleteCookie(cookie[0])
   }
 
+  /**
+   * {{> seeInClipboard }}
+   */
+  async seeInClipboard(text) {
+    const clipboard = await this.grabFromClipboard()
+    stringIncludes('clipboard').assert(text, clipboard)
+  }
+
+  /**
+   * {{> seeClipboardEquals }}
+   */
+  async seeClipboardEquals(text) {
+    const clipboard = await this.grabFromClipboard()
+    return equals('clipboard').assert(clipboard, text)
+  }
+
+  /**
+   * {{> grabFromClipboard }}
+   */
+  async grabFromClipboard() {
+    await this._grantClipboardAccess()
+    const clipboard = await this.page.evaluate(readClipboardScript, CLIPBOARD_READ_TIMEOUT_MS)
+    this.debugSection('Clipboard', clipboard)
+    return clipboard
+  }
+
+  /**
+   * {{> clearClipboard }}
+   */
+  async clearClipboard() {
+    await this._grantClipboardAccess()
+    return this.page.evaluate(writeClipboardScript, '')
+  }
+
+  async _grantClipboardAccess() {
+    await this.page.bringToFront().catch(() => {})
+    let origin
+    try {
+      origin = new URL(this.page.url()).origin
+    } catch (err) {
+      return
+    }
+    if (!origin.startsWith('http')) return
+    await this.page
+      .browserContext()
+      .overridePermissions(origin, ['clipboard-read', 'clipboard-write', 'clipboard-sanitized-write'])
+      .catch(() => {})
+  }
+
   /**
    * If a function returns a Promise, tt will wait for its resolution.
    *
@@ -3709,4 +3759,3 @@ async function proceedSelect(context, el, option) {
 
   return this._waitForAction()
 }
-

lib/helper/WebDriver.js

@@ -11,6 +11,7 @@ import { includes as stringIncludes } from '../assert/include.js'
 import { urlEquals, equals } from '../assert/equal.js'
 import store from '../store.js'
 import { checkFocusBeforeType, checkFocusBeforePressKey } from './extras/focusCheck.js'
+import { CLIPBOARD_READ_TIMEOUT_MS, readClipboardScript, writeClipboardScript, clipboardAsyncScript } from './extras/clipboard.js'
 import output from '../output.js'
 const { debug } = output
 import { empty } from '../assert/empty.js'
@@ -2091,6 +2092,48 @@ class WebDriver extends Helper {
     return cookie[0]
   }
 
+  /**
+   * {{> seeInClipboard }}
+   */
+  async seeInClipboard(text) {
+    const clipboard = await this.grabFromClipboard()
+    return stringIncludes('clipboard').assert(text, clipboard)
+  }
+
+  /**
+   * {{> seeClipboardEquals }}
+   */
+  async seeClipboardEquals(text) {
+    const clipboard = await this.grabFromClipboard()
+    return equals('clipboard').assert(clipboard, text)
+  }
+
+  /**
+   * {{> grabFromClipboard }}
+   */
+  async grabFromClipboard() {
+    await this._grantClipboardAccess()
+    const result = (await this.browser.executeAsync(clipboardAsyncScript(readClipboardScript), CLIPBOARD_READ_TIMEOUT_MS)) || {}
+    if (result.error) throw new Error(`Could not read the clipboard: ${result.error}`)
+    this.debugSection('Clipboard', result.value)
+    return result.value
+  }
+
+  /**
+   * {{> clearClipboard }}
+   */
+  async clearClipboard() {
+    await this._grantClipboardAccess()
+    const result = (await this.browser.executeAsync(clipboardAsyncScript(writeClipboardScript), '')) || {}
+    if (result.error) throw new Error(`Could not write to the clipboard: ${result.error}`)
+  }
+
+  async _grantClipboardAccess() {
+    if (typeof this.browser.setPermissions !== 'function') return
+    await this.browser.setPermissions({ name: 'clipboard-read' }, 'granted').catch(() => {})
+    await this.browser.setPermissions({ name: 'clipboard-write' }, 'granted').catch(() => {})
+  }
+
   /**
    * {{> waitForCookie }}
    */

lib/helper/extras/clipboard.js

@@ -0,0 +1,31 @@
+export const CLIPBOARD_READ_TIMEOUT_MS = 5000
+
+export function readClipboardScript(timeout) {
+  if (!navigator.clipboard || !navigator.clipboard.readText) {
+    throw new Error('Clipboard API is not available on this page, it requires a secure context (https or localhost)')
+  }
+  return Promise.race([navigator.clipboard.readText(), new Promise((resolve, reject) => setTimeout(() => reject(new Error('timed out while reading the clipboard')), timeout))])
+}
+
+export function writeClipboardScript(text) {
+  if (!navigator.clipboard || !navigator.clipboard.writeText) {
+    throw new Error('Clipboard API is not available on this page, it requires a secure context (https or localhost)')
+  }
+  return navigator.clipboard.writeText(text)
+}
+
+export function clipboardExpression(script, arg) {
+  return `(${script.toString()})(${JSON.stringify(arg)})`
+}
+
+export function clipboardAsyncScript(script) {
+  return `
+    var done = arguments[arguments.length - 1]
+    var fail = function (err) { done({ error: (err && err.message) || String(err) }) }
+    try {
+      (${script.toString()})(arguments[0]).then(function (value) { done({ value: value }) }, fail)
+    } catch (err) {
+      fail(err)
+    }
+  `
+}