1 files changed, 12 insertions, 0 deletions
diff --git a/Lib/test/test_pathlib.py b/Lib/test/test_pathlib.py
index 16bfee0..962adde 100644
--- a/Lib/test/test_pathlib.py
+++ b/Lib/test/test_pathlib.py
@@ -1880,6 +1880,18 @@ class _BasePathTest(object):
             self.assertFalse((P / 'linkB').is_file())
             self.assertFalse((P/ 'brokenLink').is_file())
 
+    @only_posix
+    def test_is_mount(self):
+        P = self.cls(BASE)
+        R = self.cls('/')  # TODO: Work out windows
+        self.assertFalse((P / 'fileA').is_mount())
+        self.assertFalse((P / 'dirA').is_mount())
+        self.assertFalse((P / 'non-existing').is_mount())
+        self.assertFalse((P / 'fileA' / 'bah').is_mount())
+        self.assertTrue(R.is_mount())
+        if support.can_symlink():
+            self.assertFalse((P / 'linkA').is_mount())
+
     def test_is_symlink(self):
         P = self.cls(BASE)
         self.assertFalse((P / 'fileA').is_symlink())