Feature: multiple line testcases

[Tishj]

Sometimes you need to set up some environment variables for a test, or you want to run a couple lines one after the other, would be nice if the tester had support for longer tests

[Tishj]

Possible format for the test file?

(longer tests have an empty line before and after the last line)

single line test
another single line test

test
with
multiple
lines


another
test with multiple lines

single line test