olemus
kasutuslikkuse testimise osa, mis peab silmas toote kasutamist mõjutavaid puudeid
= a subset of usability testing where the users under consideration have disabilities that affect how they use the product

ülevaateid
https://www.browserstack.com/accessibility-testing/what-is-accessibility-testing
https://info.usablenet.com/accessibility-testing
https://katalon.com/resources-center/blog/accessibility-testing
https://qalified.com/blog/step-by-step-guide-to-accessibility-testing/