Fix broken test in test_skipping and add one for strict xfail
Fix broken test in test_skipping and add one for strict xfail

hackebrot/pytest,pytest-dev/pytest,jaraco/pytest,tomviner/pytest,The-Compiler/pytest,rmfitzpatrick/pytest,RonnyPfannschmidt/pytest,nicoddemus/pytest,The-Compiler/pytest,davidszotten/pytest,Akasurde/pytest,txomon/pytest,etataurov/pytest,hpk42/pytest,skylarjhdownes/pytest,alfredodeza/pytest,ddboline/pytest,tareqalayan/pytest,eli-b/pytest,nicoddemus/pytest,MichaelAquilina/pytest,vmalloc/dessert,markshao/pytest,flub/pytest,hpk42/pytest,tgoodlet/pytest,pfctdayelise/pytest,tomviner/pytest,malinoff/pytest