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diff --git a/src/ceph/src/ceph-volume/ceph_volume/tests/devices/simple/test_scan.py b/src/ceph/src/ceph-volume/ceph_volume/tests/devices/simple/test_scan.py
new file mode 100644
index 0000000..d68fe63
--- /dev/null
+++ b/src/ceph/src/ceph-volume/ceph_volume/tests/devices/simple/test_scan.py
@@ -0,0 +1,52 @@
+import os
+import pytest
+from ceph_volume.devices.simple import scan
+
+
+class TestScan(object):
+
+    def test_main_spits_help_with_no_arguments(self, capsys):
+        scan.Scan([]).main()
+        stdout, stderr = capsys.readouterr()
+        assert 'Scan an OSD directory for files' in stdout
+
+
+class TestGetContents(object):
+
+    def test_multiple_lines_are_left_as_is(self, tmpfile):
+        magic_file = tmpfile(contents='first\nsecond\n')
+        scanner = scan.Scan([])
+        assert scanner.get_contents(magic_file) == 'first\nsecond\n'
+
+    def test_extra_whitespace_gets_removed(self, tmpfile):
+        magic_file = tmpfile(contents='first   ')
+        scanner = scan.Scan([])
+        assert scanner.get_contents(magic_file) == 'first'
+
+    def test_single_newline_values_are_trimmed(self, tmpfile):
+        magic_file = tmpfile(contents='first\n')
+        scanner = scan.Scan([])
+        assert scanner.get_contents(magic_file) == 'first'
+
+
+class TestEtcPath(object):
+
+    def test_directory_is_valid(self, tmpdir):
+        path = str(tmpdir)
+        scanner = scan.Scan([])
+        scanner._etc_path = path
+        assert scanner.etc_path == path
+
+    def test_directory_does_not_exist_gets_created(self, tmpdir):
+        path = os.path.join(str(tmpdir), 'subdir')
+        scanner = scan.Scan([])
+        scanner._etc_path = path
+        assert scanner.etc_path == path
+        assert os.path.isdir(path)
+
+    def test_complains_when_file(self, tmpfile):
+        path = tmpfile()
+        scanner = scan.Scan([])
+        scanner._etc_path = path
+        with pytest.raises(RuntimeError):
+            scanner.etc_path