icasefs: refactor "test-casecollision-merge.t" to reuse in succeeding fixes
This patch refactors "test-casecollision-merge.t" to increase
reusability in succeeding patches.
It is confirmed that changed test also can detect issue3370.
#!/usr/bin/env python
import errno, os, sys
for f in sys.argv[1:]:
try:
print f, '->', os.readlink(f)
except OSError, err:
if err.errno != errno.EINVAL:
raise
print f, 'not a symlink'
sys.exit(0)