Xcode lost button test in xctest

Question

I working on Xcode 6. When I coding XCTest, Xcode has been crash. When I reopen my Xcode, and it lost little diamond run button.

It should be:

But it got:

I open other project and it don't have this error. But when I create new target, it get same error (in other project).

I checked Target Membership, but it checked in target name. When I choose Test in Product>Test it run but the button not show.

Thank a lot, sorry for my bad english.

Answer 1

Prefix func name with test

Also try changing the targets