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Method Options

Methods options are the options that can be set per method. If the option has the same key as an option that has been set during the instantiation of the plugin, this method option will override the plugin option value.

Save Options​

disableCSSAnimation​

  • Type: boolean
  • Mandatory: No
  • Default: false
  • Used with: All methods
  • Supported: Web, Hybrid App (Webview)

En/Disable all CSS animations and the input caret in the application. If set to true all animations will be disabled before taking a screenshot and reset when done

enableLayoutTesting​

  • Type: boolean
  • Mandatory: No
  • Default: false
  • Used with: All methods
  • Supported: Web

This will hide all text on a page so only the layout will be used for comparison. Hiding will be done by adding the style 'color': 'transparent !important' to each element.

For the output see Test Output

info

By using this flag each element that contains text (so not only p, h1, h2, h3, h4, h5, h6, span, a, li, but also div|button|..) will get this property. There is no option to tailor this.

hideScrollBars​

  • Type: boolean
  • Mandatory: No
  • Default: true
  • Used with: All methods
  • Supported: Web, Hybrid App (Webview)

Hide scrollbar(s) in the application. If set to true all scrollbar(s) will be disabled before taking a screenshot. This is set to default true to prevent extra issues.

hideElements​

  • Type: array
  • Mandatory: no
  • Used with: All methods
  • Supported: Web, Hybrid App (Webview), Native App

This method can hide 1 or multiple elements by adding the property visibility: hidden to them by providing an array of elements.

removeElements​

  • Type: array
  • Mandatory: no
  • Used with: All methods
  • Supported: Web, Hybrid App (Webview), Native App

This method can remove 1 or multiple elements by adding the property display: none to them by providing an array of elements.

resizeDimensions​

  • Type: object
  • Mandatory: no
  • Default: { top: 0, right: 0, bottom: 0, left: 0}
  • Used with: Only for saveElement or checkElement
  • Supported: Web, Hybrid App (Webview), Native App

An object that needs to hold a top, right, bottom and left amount of pixels that need to make the element cutout bigger.

fullPageScrollTimeout​

The timeout in milliseconds to wait after a scroll. This might help identify pages with lazy loading.

hideAfterFirstScroll​

This method will hide one or multiple elements by adding the property visibility: hidden to them by providing an array of elements. This will be handy when a page for example holds sticky elements that will scroll with the page if the page is scrolled but will give an annoying effect when a full-page screenshot is made

waitForFontsLoaded​

  • Type: boolean
  • Mandatory: No
  • Default: true
  • Used with: All methods
  • Supported: Web, Hybrid App (Webview)

Fonts, including third-party fonts, can be loaded synchronously or asynchronously. Asynchronous loading means that fonts might load after WebdriverIO determines that a page has fully loaded. To prevent font rendering issues, this module, by default, will wait for all fonts to be loaded before taking a screenshot.

Compare (Check) Options​

Compare options are options that influence the way the comparison, by ResembleJS is being executed.

NOTE
  • All options from the Save Options can be used for the Compare methods
  • All compare options can be used during service instantiation or for every single check method. If a method option has the same key as an option that has been set during the instantiation of the service, then the method compare option will override the service compare option value.
  • All options can be used for:
    • Web
    • Hybrid App
    • Native App

ignoreAlpha​

  • Type: boolean
  • Default: false
  • Mandatory: no

Compare images and discard alpha.

blockOutSideBar​

  • Type: boolean
  • Default: true
  • Mandatory: no
  • Remark: Can only be used for checkScreen(). This is iPad only

Automatically block out the sidebar for iPads in landscape mode during comparisons. This prevents failures on the tab/private/bookmark native component.

blockOutStatusBar​

  • Type: boolean
  • Default: true
  • Mandatory: no
  • Remark: This is Mobile only

Automatically block out the status and address bar during comparisons. This prevents failures on time, wifi or battery status.

blockOutToolBar​

  • Type: boolean
  • Default: true
  • Mandatory: no
  • Remark: This is Mobile only

Automatically block out the toolbar.

ignoreAntialiasing​

  • Type: boolean
  • Default: false
  • Mandatory: no

Compare images and discard anti-aliasing.

ignoreColors​

  • Type: boolean
  • Default: false
  • Mandatory: no

Even though the images are in color, the comparison will compare 2 black/white images

ignoreLess​

  • Type: boolean
  • Default: false
  • Mandatory: no

Compare images and compare with red = 16, green = 16, blue = 16, alpha = 16, minBrightness=16, maxBrightness=240

ignoreNothing​

  • Type: boolean
  • Default: false
  • Mandatory: no

Compare images and compare with red = 0, green = 0, blue = 0, alpha = 0, minBrightness=0, maxBrightness=255

ignoreTransparentPixel​

  • Type: boolean
  • Default: false
  • Mandatory: no

Compare images and it will ignore all pixels that have some transparency in one of the images

rawMisMatchPercentage​

  • Type: boolean
  • Default: false
  • Mandatory: no

If true the return percentage will be like 0.12345678, default is 0.12

returnAllCompareData​

  • Type: boolean
  • Default: false
  • Mandatory: no

This will return all compare data, not only the mismatch percentage

saveAboveTolerance​

  • Type: number
  • Default: 0
  • Mandatory: no

Allowable value of misMatchPercentage that prevents saving images with differences

largeImageThreshold​

  • Type: number
  • Default: 0
  • Mandatory: no

Comparing large images can lead to performance issues. When providing a number for the number of pixels here (higher than 0), the comparison algorithm skips pixels when the image width or height is larger than largeImageThreshold pixels.

scaleImagesToSameSize​

  • Type: boolean
  • Default: false
  • Mandatory: no

Scales 2 images to the same size before execution of comparison. Highly recommended to enable ignoreAntialiasing and ignoreAlpha

Folder options​

The baseline folder and screenshot folders(actual, diff) are options that can be set during the instantiation of the plugin or method. To set the folder options on a particular method, pass in folder options to the methods option object. This can be used for:

  • Web
  • Hybrid App
  • Native App
import path from 'node:path'

const methodOptions = {
actualFolder: path.join(process.cwd(), 'customActual'),
baselineFolder: path.join(process.cwd(), 'customBaseline'),
diffFolder: path.join(process.cwd(), 'customDiff'),
}

// You can use this for all methods
await expect(
await browser.checkFullPageScreen("checkFullPage", methodOptions)
).toEqual(0)

actualFolder​

  • Type: string
  • Mandatory: no

Folder for the snapshot that has been captured in the test.

baselineFolder​

  • Type: string
  • Mandatory: no

Folder for the baseline image that is being used to compare against.

diffFolder​

  • Type: string
  • Mandatory: no

Folder for the image difference rendered by ResembleJS.

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