test(test000_setup): fallback for when os.path.relpath throws

Happens on Windows only. It is only used for logging, so no functional change.

autotest/test000_setup.py

@@ -26,6 +26,14 @@
 mfexe_pth = 'temp/mfexes'
 
 
+def relpath_fallback(pth):
+ try:
+ # throws ValueError on Windows if pth is on a different drive
+ return os.path.relpath(pth)
+ except ValueError:
+ return os.path.abspath(pth)
+
+
 def create_dir(pth):
  # remove pth directory if it exists
  if os.path.exists(pth):
@@ -173,7 +181,7 @@ def test_build_modflow6():
  pymake.main(srcdir, target, fc=fc, cc=cc, include_subdirs=True,
  fflags=fflags)
 
- msg = '{} does not exist.'.format(os.path.relpath(target))
+ msg = '{} does not exist.'.format(relpath_fallback(target))
  assert os.path.isfile(target), msg
 
 
@@ -197,7 +205,7 @@ def test_build_mf5to6():
  pymake.main(srcdir, target, fc=fc, cc=cc, include_subdirs=True,
  extrafiles=extrafiles)
 
- msg = '{} does not exist.'.format(os.path.relpath(target))
+ msg = '{} does not exist.'.format(relpath_fallback(target))
  assert os.path.isfile(target), msg
 
 
@@ -219,7 +227,7 @@ def test_build_zonebudget():
 
  pymake.main(srcdir, target, fc=fc, cc=cc, extrafiles=extrafiles)
 
- msg = '{} does not exist.'.format(os.path.relpath(target))
+ msg = '{} does not exist.'.format(relpath_fallback(target))
  assert os.path.isfile(target), msg