I was working on this mustachio fork called Morestachio and changed the Default Encoding from "Encoding.Default" to UTF8 while creating a .NetStandard version of it. After i have created everything i thought "Hey just for the lolz run my tests again" ...

@jespersh They are code page 1201 (BigEndian) or 1200. There where 4 tests that did not changed the encoding for the tests so the Framework returned an UTF8 string that was compared by Nunit with an native c# string. This was my fault. But still very interesting error page from Nunit^^

Pascal string?