tests: Assert for /proc being a mountpoint for cross-fs tests

Skip cross-fs tests if /proc is not a mountpoint. This handles cases
when /proc exists but is not mounted which is quite normal
e.g. on Gentoo/FreeBSD.

3 files changed, 14 insertions, 2 deletions

diff --git a/tests/test_find_top_level.py b/tests/test_find_top_level.py
index a326384..17f83c4 100644
--- a/tests/test_find_top_level.py
+++ b/tests/test_find_top_level.py
@@ -159,8 +159,8 @@ class TestCrossDevice(TempDirTestCase):
     }
 
     def setUp(self):
-        if not os.path.exists('/proc'):
-            raise unittest.SkipTest('/proc does not exist')
+        if not os.path.ismount('/proc'):
+            raise unittest.SkipTest('/proc is not a mountpoint')
         super(TestCrossDevice, self).setUp()
         os.symlink('/proc', os.path.join(self.dir, 'test'))
 
diff --git a/tests/test_recursiveloader.py b/tests/test_recursiveloader.py
index 019c29f..ae757f2 100644
--- a/tests/test_recursiveloader.py
+++ b/tests/test_recursiveloader.py
@@ -1548,6 +1548,8 @@ DATA sub/version 0 MD5 d41d8cd98f00b204e9800998ecf8427e
     }
 
     def setUp(self):
+        if not os.path.ismount('/proc'):
+            raise unittest.SkipTest('/proc is not a mountpoint')
         super(CrossDeviceManifestTest, self).setUp()
         os.symlink('/proc', os.path.join(self.dir, 'sub'))
 
@@ -1593,6 +1595,8 @@ class CrossDeviceEmptyManifestTest(TempDirTestCase):
     }
 
     def setUp(self):
+        if not os.path.ismount('/proc'):
+            raise unittest.SkipTest('/proc is not a mountpoint')
         super(CrossDeviceEmptyManifestTest, self).setUp()
         os.symlink('/proc', os.path.join(self.dir, 'sub'))
 
@@ -1633,6 +1637,8 @@ IGNORE sub
     }
 
     def setUp(self):
+        if not os.path.ismount('/proc'):
+            raise unittest.SkipTest('/proc is not a mountpoint')
         super(CrossDeviceIgnoreManifestTest, self).setUp()
         os.symlink('/proc', os.path.join(self.dir, 'sub'))
 
diff --git a/tests/test_verify.py b/tests/test_verify.py
index a255068..d244c0b 100644
--- a/tests/test_verify.py
+++ b/tests/test_verify.py
@@ -278,6 +278,9 @@ class EmptyFileVerificationTest(unittest.TestCase):
                 (False, [('__exists__', False, True)]))
 
     def testCrossFilesystem(self):
+        if not os.path.ismount('/proc'):
+            raise unittest.SkipTest('/proc is not a mountpoint')
+
         try:
             st = os.stat('/proc')
         except OSError:
@@ -352,6 +355,9 @@ class EmptyFileVerificationTest(unittest.TestCase):
             })
 
     def test_update_cross_filesystem(self):
+        if not os.path.ismount('/proc'):
+            raise unittest.SkipTest('/proc is not a mountpoint')
+
         try:
             st = os.stat('/proc')
         except OSError: