Ask HN: Accessibility Testing for JavaScript apps

There are a number of tools out there that help with accessibility but most of the focus seems to be on web PAGES and web SITES not web APPS. My employer takes a11y seriously and we have a dedicated testing group for this however their tools which work well on classic server-response page loads, fail horribly on more dynamic, ajaxy js apps. I'd really like to be able to point this testing group to some better tools, rather than just telling them their tools are terrible for testing my apps.