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Check settings

Check generates a screenshot of the current page and adds it to the Applitools Eyes Test.

Syntax​

eyes.Check(checkSettings)

Holds the checkpoint's configuration. This is defined using a fluent API, starting with Target.

Page screenshot​

  • To take a viewport screenshot, call Target.Window().
  • To take a full page screenshot, call Target.Window().Fully().

Region screenshot​

To take a region screenshot, you can specify either a selector or the element representation itself. For example:

// region by selector
eyes.Check(Target.Region(".banner"));

// region by locator
ILocator locator = page.Locator(".banner");
eyes.Check(Target.Region(locator));

// region by element
await IElementHandle element = page.Locator(".banner").ElementHandleAsync();
eyes.Check(Target.Region(element));

You can specify the absolute coordinates for the required region:

// region by coordinates
eyes.Check(
    Target.Region(new Region(10, 20, 200, 80))
);

For all the above options, you can take the entire content of an element that can be scrolled using .Fully().

Frames​

For taking screenshots of elements inside iframes, you can specify the frame using the Target.Frame fluent API. For example:

// element inside frame
eyes.Check(
  Target.Frame("frame-1").Region(".element-inside frame")
);

To take a screenshot of the entire frame:

// entire frame
eyes.Check(
  Target.Frame("frame-1").Fully()
);

To create a "frame chain" with multiple calls: 

// element inside nested frames
eyes.Check(
  Target.Frame("frame-1").Frame("frame-1-1").Region(".nested-element")
)

Ignore regions​

The test will not report any mismatches in an ignore region. This is useful for example for areas on the screen whose content is different on every run such as a time of day field.

// single region
eyes.Check(
    "viewport screenshot with ignore region",
    Target.Window()
        .Ignore(".dynamic-content-here")
)

// multiple regions
var element = await page.Locator("selector").ElementHandleAsync()
eyes.Check(
    "viewport screenshot with ignore region",
    Target.Window()
        .Ignore(".dynamic-content-here")
        .Ignore(page.Locator("selector")) // some Locator
        .Ignore(element) // some ElementHandle
        .Ignore(new Region(10, 20, 30, 40))
)

Possible input types:

  • string (interpreted as css selector)
  • locator
  • element
  • coordinates (new Region(left, top, width, height))

Floating regions​

In a Floating Region, the position of a region may move without reporting a mismatch.

// viewport screenshot with floating region
eyes.Check(
    Target
        .Window()
        .Floating(".Floating-area", 10, 10, 10, 10) // up, down, left, right
)

// multiple regions
var element = await page.Locator(".floating-area").ElementHandleAsync()
eyes.Check(
    Target
        .Window()
        .Floating(page.Locator(".floating-area"), 10, 10, 10, 10) // Playwright Locator
        .Floating(10, ".floating-area")
        .Floating(10, page.Locator(".floating-area")) // up, down, left, right all equal to 10
        .Floating(10, element) // up, down, left, right all equal to 10
        .Floating(10, new Region(10, 20, 30, 40))
        .Floating(new Region(10, 20, 30, 40), 10, 10, 10, 10)
)

Possible input types:

  • string (interpreted as css selector)
  • ILocator
  • IElementHandle
  • coordinates (new Region(left, top, width, height))

Region match levels​

You can set the following match levels for a region:

  • Strict: Detect any mismatch visible to the human eye.
  • Ignore colors: Similar to the strict match level but ignores changes in colors.
  • Layout: Check only the layout and ignore actual text and graphics.
// viewport screenshot with strict region
eyes.Check(Target.Window().Strict(".some-element"));

// viewport screenshot with ignore colors region
eyes.Check(Target.Window().IgnoreColors(".some-element"));

// viewport screenshot with layout region
eyes.Check(Target.Window().Layout(".some-element"));

// multiple regions
Target.Window().IgnoreColors(region1).IgnoreColors(region2).IgnoreColors(region3);
Target.Window().Strict(region1).Strict(region2).Strict(region3);
Target.Window().Layout(region1).Layout(region2).Layout(region3);

Possible input types:

  • string (interpreted as css selector)
  • ILocator
  • IElementHandle
  • coordinates (new Region(left, top, width, height))

Accessibility regions​

Defines an accessibility region and its type. The type can be IgnoreContrast, RegularText, LargeText, BoldText, or GraphicalObject.

// viewport screenshot with accessibility region
eyes.Check(
    Target.Window().Accessibility(".some-element", AccessibilityRegionType.LargeText)
);

// multiple regions is done by chaining the same method
eyes.Check(
    Target.Window()
        .Accessibility(".element-1", AccessibilityRegionType.LargeText)
        .Accessibility(".element-2", AccessibilityRegionType.IgnoreContrast)
        .Accessibility(".element-3", AccessibilityRegionType.BoldText)
);

Possible input types:

  • string (interpreted as css selector)
  • ILocator
  • IElementHandle
  • coordinates (new Region(left, top, width, height))

Scroll root element​

Normally, Eyes selects the most appropriate element to scroll to execute the Fully keyword. You can use the scrollRootElement element to specify the element to scroll explicitly.

// full page with custom scroll root element
eyes.Check(
    Target.Window().Fully().ScrollRootElement(".main-content")
);

Possible input types:

  • string (interpreted as css selector)
  • ILocator
  • IElementHandle

Before capture screenshot​

Script that runs after the page is loaded but before capturing the screenshot.

eyes.Check("tag", Target.Window().BeforeRenderScreenshotHook(hook));

Tag (WithName)​

Defines a name for the checkpoint in the Eyes Test Manager. The name may be any string and serves to identify the step to the user in the Test manager.

You can change the tag value without impacting testing in any way since Eyes does not use the tag to identify the baseline step that corresponds to the checkpoint; Eyes matches steps based on their content and position in the sequences of images of the test. See How Eyes compares checkpoints and baseline images for details.

// Tag
eyes.Check(Target.Window().WithName("Main page"));

Lazy loading (LazyLoad)​

You can use the SDK to scroll the entire page, or a specific length of the page, to make sure all lazily loaded assets are on the page before performing a check.

// lazy loads with sensible defaults
eyes.Check(Target.Window().LazyLoad());

// lazy loads with options specified
eyes.Check(Target.Window().LazyLoad(
  new LazyLoadOptions(
    scrollLength: 250, // amount of pixels to use for each scroll attempt
    waitingTime: 500, // milliseconds to wait in-between each scroll attempt
    maxAmountToScroll: 1000 // total pixels of the page to be scrolled
  )
));

Possible input types:

  • nothing (enables sensible defaults)
  • options object (new LazyLoadOptions(maxAmountToScroll, waitingTime, scrollLength))

Other details:

  • If an option is omitted, the sensible default for that value will be used
  • The SDK will repeatedly scroll the page using the scrollLength until either the page cannot be scrolled further or the maxAmountToScroll has been reached (whichever happens first)

Other checkSettings configuration​

  • HideScrollbars
  • HideCaret
  • IgnoreDisplacements
  • UseDom
  • EnablePatterns