An easier question: does anyone know of test suites for existing languages that are compact but thorough?

It took a bit of tooling, but Scala’s test suite is pretty nice for compactness, e.g.: • all

pos/**/*.scala

should compile but the output isn’t checked • all

neg/**/*.scala

should NOT compile, but the compile error messages aren’t checked • all

run/**/*.scala

are run, and their output compared to a

*.check

file alongside, e.g. run

foo.scala

and make sure

foo.check

contains the same output