I would like to know if there is any way to tell Xcode to run unit tests in a specified order. I mean not in a same XCTestCase class file, but between all the class file.
For you exemple you can just rename the tests files on your project like this :
SitchozrSDKSessionTest -> t001_SitchozrSDKSessionTest SitchozrSDKMessageTest -> t002_SitchozrSDKMessageTest
Xcode treat the files using alphabetic order.