Backend.Tests: 2nd acceptance test for bug 242 #2918

Job	Run time
macOS--mono-only	2m 53s
macOS--dotnet6-only	2m 1s
windows--legacyFramework-only	11m 21s
windows--dotnet6-and-legacyFramework	3m 20s
macOS--dotnet6-and-mono	2m 43s
linux22-github--dotnet-and-mono	1m 48s
linux22-github--dotnet-and-newmono	2m 22s
linux22-vanilla--stockdotnet6-and-newmono	2m 51s
linux22-vanilla--stockdotnet6-and-stockmono	2m 1s
linux22-vanilla--stockdotnet6-only	1m 52s
linux22-vanilla--stockmono-only	2m 49s
windows--dotnet6-only	3m 48s
linux20-github--dotnet-and-mono	1m 47s
linux20-github--dotnet-and-newmono	1m 45s
linux20-vanilla--newmono-only	3m 56s
linux20-vanilla--stockmono-only	3m 29s
linux22-vanilla--newmono-only	3m 41s
conventions	0s
snap_pkg	0s
	54m 27s

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