Fix PytestReturnNotNoneWarning

```
test_examples.py::test_printcap
  /usr/local/lib/python3.9/dist-packages/_pytest/python.py:199: PytestReturnNotNoneWarning: Expected None, but test_examples.py::test_printcap returned ((7, 38), {'FUSE_CAP_READDIRPLUS_AUTO', 'FUSE_CAP_ASYNC_DIO', 'FUSE_CAP_SPLICE_READ', 'FUSE_CAP_CACHE_SYMLINKS', 'FUSE_CAP_IOCTL_DIR', 'FUSE_CAP_NO_OPENDIR_SUPPORT', 'FUSE_CAP_NO_OPEN_SUPPORT', 'FUSE_CAP_POSIX_LOCKS', 'FUSE_CAP_READDIRPLUS', 'FUSE_CAP_POSIX_ACL', 'FUSE_CAP_ATOMIC_O_TRUNC', 'FUSE_CAP_SPLICE_MOVE', 'FUSE_CAP_EXPORT_SUPPORT', 'FUSE_CAP_FLOCK_LOCKS', 'FUSE_CAP_EXPLICIT_INVAL_DATA', 'FUSE_CAP_EXPIRE_ONLY', 'FUSE_CAP_DONT_MASK', 'FUSE_CAP_WRITEBACK_CACHE', 'FUSE_CAP_AUTO_INVAL_DATA', 'FUSE_CAP_PARALLEL_DIROPS', 'FUSE_CAP_SPLICE_WRITE', 'FUSE_CAP_ASYNC_READ'}), which will be an error in a future version of pytest.  Did you mean to use `assert` instead of `return`?
    warnings.warn(
```

diff --git a/test/util.py b/test/util.py
index 8bef26509e3ad5397598151c23e85fcfe8909168..0a1fa93cdf27b9ab4d14d3f87fb5944eb72afa94 100644 (file)
--- a/test/util.py
+++ b/test/util.py
@@ -11,7 +11,7 @@ import itertools
 
 basename = pjoin(os.path.dirname(__file__), '..')
 
-def test_printcap():
+def get_printcap():
     cmdline = base_cmdline + [ pjoin(basename, 'example', 'printcap') ]
     proc = subprocess.Popen(cmdline, stdout=subprocess.PIPE,
                             universal_newlines=True)
@@ -31,6 +31,8 @@ def test_printcap():
 
     return (proto, caps)
 
+def test_printcap():
+    get_printcap()
 
 def wait_for_mount(mount_process, mnt_dir,
                    test_fn=os.path.ismount):
@@ -163,7 +165,7 @@ os.environ['PATH'] = '%s:%s' % (pjoin(basename, 'util'), os.environ['PATH'])
 os.environ['PATH'] = '%s:%s' % (pjoin(basename, 'example'), os.environ['PATH'])
 
 try:
-    (fuse_proto, fuse_caps) = test_printcap()
+    (fuse_proto, fuse_caps) = get_printcap()
 except:
     # Rely on test to raise error
     fuse_proto = (0,0)