Rename regression tests output file

[allredj]

Instead of naming the .out file after the file under test, we name it after the test description.
This prevents clashes when several test descriptions are present in the directory.
This should also go into master.

Addresses: diffblue/test-gen#680

[tautschnig]

Instead of naming the .out file after the file under test, we name it after the test description.
This prevents clashes when several test descriptions are present in the directory.

I don't quite understand the above - it seems "test descriptions" refers to different artifacts in those two sentences?

[allredj]

Currently for the following configuration:

under_test.java
test1.desc
test2.desc

the created output files will both have the name under_test.out (and thus will overwrite each other).

With my suggested modification, the output files will be named: test1.out and test2.out.

[tautschnig]

Ah, sorry, that was me being confused. But then I do wonder whether it is a good idea to have multiple .desc descriptions in a single directory...

[allredj]

The script is designed to fetch all .desc files. So it shouldn't be a problem. The idea is to be able to test several command lines on the same files. This is something that we would need in test-gen. Whether someone else has made the assumption that there would be only one .desc per directory, I don't know.

In the mean time, it seems I need to fix the case were a test fails.

[tautschnig]

The script is designed to fetch all .desc files.

That of course is enough of a reason to apply the change you are proposing.

[allredj]

This PR is now replaced by #1119.