[PATCH] scrrun/tests: Add some tests for ReadLine()

[Marvin]

Hi,

While running your changed tests on Windows, I think I found new failures.
Being a bot and all I'm not very good at pattern recognition, so I might be
wrong, but could you please double-check?
Full results can be found at
https://testbot.winehq.org/JobDetails.pl?Key=34921

Your paranoid android.


=== w2003std (32 bit filesystem) ===
filesystem.c:2276: Test failed: Failed to read text line, hr 0.
05c4:filesystem: unhandled exception c0000005 at 004122F0