Accessibility checks - Githubissues

The W3C defines mobile accessibility guidelines. Google provides an Accessibility test framework for Android that integrates with Espresso.

When Espresso loads a view, the following 16 accessibility checks are run. It'd be great to have similar support in EarlGrey.

TouchTargetSizeViewCheck - Check to ensure that a view has a touch target that is at least 48x48dp.
TextContrastViewCheck - Check to ensure that a TextView has sufficient contrast between text color and background color. Large text is 3:1, Normal text is 4.5:1
DuplicateSpeakableTextViewHierarchyCheck - Check Views in a hierarchy don't have the same speakable text.
SpeakableTextPresentViewCheck - Check to ensure that a view has a content description for a screen reader.
EditableContentDescViewCheck - Check to ensure that an editable TextView is not labeled by a contentDescription.
ClickableSpanViewCheck - Check to ensure that ClickableSpan is not being used in a TextView. ClickableSpan#onClick can't be called by accessibility services.
RedundantContentDescViewCheck - Checks to ensure that speakable text does not contain redundant information about the view's type.
DuplicateClickableBoundsViewCheck - Check that containers marked clickable process click events.

EditableContentDescInfoCheck - Check to ensure that editable nodes are not also labeled with a contentDescription.
SpeakableTextPresentInfoCheck - Check to ensure that an info has speakable text for a screen reader.
ClickableSpanInfoCheck - Check to ensure that ClickableSpan is not being used in a TextView. ClickableSpan#onClick can't be called by accessibility services.
TouchTargetSizeInfoCheck - Check to ensure that a node has a touch target that is at least 48x48dp.
RedundantContentDescInfoCheck - Checks to ensure that speakable text does not contain redundant information about the node's type.
DuplicateClickableBoundsInfoCheck - Check that containers marked clickable process click events.
ContrastInfoCheck - Check to ensure that a TextView has sufficient contrast between text color and background color. Large text is 3:1, Normal text is 4.5:1

AnnouncementEventCheck - Check which flags the use of View#announceForAccessibility and AccessibilityEvent#TYPE_ANNOUNCEMENT because they can be disruptive to the user.

google / EarlGrey