[llvm-strings] Improve testing of llvm-strings

Authored by jhenderson on Aug 12 2019, 4:36 AM.


[llvm-strings] Improve testing of llvm-strings

This patch tidies up the llvm-strings testing by:

  1. Adding comments to every test.
  2. Getting rid of canned input files, and having the tests generate them on the fly (this makes the tests self-contained).
  3. Adding missing test coverage.
  4. Renaming some tests that weren't clear as to their purpose.
  5. Adding extra checking of various cases, formatting etc.
  6. Removing a test that didn't seem to have any useful purpose for testing llvm-strings.

Reviewed by: rupprecht, grimar, MaskRay

Differential Revision: https://reviews.llvm.org/D66015

llvm-svn: 368555