Update choosetests.jl

Author: DilumAluthge

test/choosetests.jl

@@ -113,7 +113,7 @@ function choosetests(choices = [])
     requested_all     = "all"     in tests
     requested_default = "default" in tests
     if isempty(tests) || requested_all || requested_default
-        append!(main_thing, TESTNAMES)
+        append!(tests, TESTNAMES)
     end
     filter!(x -> x != "all",     tests)
     filter!(x -> x != "default", tests)