test: add a test for %imacro
test: add a test for %imacro

Add a test for case-insensitive matching of %imacro.

Distrotech/nasm,Distrotech/nasm,turingstudio/nasm,techkey/nasm,turingstudio/nasm,projedi/nasm,techkey/nasm,letolabs/nasm,techkey/nasm,projedi/nasm,letolabs/nasm,Distrotech/nasm,projedi/nasm,techkey/nasm,projedi/nasm,techkey/nasm,Distrotech/nasm,letolabs/nasm,projedi/nasm,turingstudio/nasm,turingstudio/nasm