Reported in T105589#1970175
Reproduced on local instance of mediawiki-vagrant with multimediaviewer role enabled.
$ bundle exec cucumber features/mmv.performance.feature:4 @en.wikipedia.beta.wmflabs.org @custom-browser @mediawiki.org @firefox @internet_explorer_8 @internet_explorer_9 @internet_explorer_10 @internet_explorer_11 @test2.wikipedia.org Feature: Multimedia Viewer performance Background: # features/mmv.performance.feature:4 Given I am using a custom user agent # features/step_definitions/mmv_performance_steps.rb:26 undefined method `test_name' for #<MediawikiSelenium::Environment:0x007f9a36bb0df0> (NoMethodError) ./features/step_definitions/mmv_performance_steps.rb:27:in `/^I am using a custom user agent$/' features/mmv.performance.feature:5:in `Given I am using a custom user agent' And I am at a wiki article with at least two embedded pictures # features/step_definitions/mmv_steps.rb:3 0 scenarios 2 steps (1 failed, 1 skipped) 0m0.027s