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Filename : jest-setup.js
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/*
 * Copyright (C) 2019 - present Instructure, Inc.
 *
 * This file is part of Canvas.
 *
 * Canvas is free software: you can redistribute it and/or modify it under
 * the terms of the GNU Affero General Public License as published by the Free
 * Software Foundation, version 3 of the License.
 *
 * Canvas is distributed in the hope that it will be useful, but WITHOUT ANY
 * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
 * A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
 * details.
 *
 * You should have received a copy of the GNU Affero General Public License along
 * with this program. If not, see <http://www.gnu.org/licenses/>.
 */

import filterUselessConsoleMessages from '@instructure/filter-console-messages'

// because InstUI themeable components need an explicit "dir" attribute on the <html> element
document.documentElement.setAttribute('dir', 'ltr')

require('@instructure/ui-themes')

// set up mocks for native APIs
if (!('MutationObserver' in window)) {
  Object.defineProperty(window, 'MutationObserver', {
    value: require('@sheerun/mutationobserver-shim'),
  })
}

window.scroll = () => {}

/**
 * We want to ensure errors and warnings get appropriate eyes. If
 * you are seeing an exception from here, it probably means you
 * have an unintended consequence from your changes. If you expect
 * the warning/error, add it to the ignore list below.
 */
/* eslint-disable no-console */
const globalError = global.console.error
const ignoredErrors = [/A theme registry has already been initialized/]
const globalWarn = global.console.warn
const ignoredWarnings = [
  /Translation for .* in "en" is missing/,
  /Exactly one focusable child is required/,
]
global.console = {
  log: console.log,
  error: error => {
    if (ignoredErrors.some(regex => regex.test(error))) {
      return
    }
    globalError(error)
    throw new Error(
      `Looks like you have an unhandled error. Keep our test logs clean by handling or filtering it. ${error}`
    )
  },
  warn: warning => {
    if (ignoredWarnings.some(regex => regex.test(warning))) {
      return
    }
    globalWarn(warning)
    throw new Error(
      `Looks like you have an unhandled warning. Keep our test logs clean by handling or filtering it. ${warning}`
    )
  },
  info: console.info,
  debug: console.debug,
}
/* eslint-enable no-console */
filterUselessConsoleMessages(global.console)

if (typeof window.URL.createObjectURL === 'undefined') {
  Object.defineProperty(window.URL, 'createObjectURL', {value: () => 'http://example.com/whatever'})
}

if (typeof window.URL.revokeObjectURL === 'undefined') {
  Object.defineProperty(window.URL, 'revokeObjectURL', {value: () => undefined})
}

global.DataTransferItem = global.DataTransferItem || class DataTransferItem {}