LayoutTests for Accessibility

General Info on LayoutTests: Building and Running the Tests

See Layout Tests for general info on how to build and run layout tests.

Old vs. New

There are two styles of accessibility layout tests:

  • Using a -expected.txt (now deprecated)
  • Unit-style tests with assertions

Use the unit-style tests. An example is aria-modal.html.

Methodology and Bindings

These tests check the accessibility tree directly in Blink using AccessibilityController, which is just a test helper.

The code that implements the bindings is here:

  • content/shell/test_runner/accessibility_controller.cc
  • content/shell/test_runner/web_ax_object_proxy.cc

You‘ll probably find bindings for the features you want to test already. If not, it’s not hard to add new ones.