util: Add find_mtimes helper

mopidy/utils/path.py

@@ -200,6 +200,11 @@ def find_files(path):
     return results.iterkeys()
 
 
+def find_mtimes(root):
+    results, errors = _find(root, hidden=False, relative=False)
+    return dict((f, int(st.st_mtime)) for f, st in results.iteritems())
+
+
 def check_file_path_is_inside_base_dir(file_path, base_path):
     assert not file_path.endswith(os.sep), (
         'File path %s cannot end with a path separator' % file_path)

tests/utils/test_path.py

@@ -11,7 +11,7 @@ import glib
 
 from mopidy.utils import path
 
-from tests import path_to_data_dir
+from tests import any_int, path_to_data_dir
 
 
 class GetOrCreateDirTest(unittest.TestCase):
@@ -235,6 +235,36 @@ class FindFilesTest(unittest.TestCase):
                 is_bytes(name), '%s is not bytes object' % repr(name))
 
 
+class FindMTimesTest(unittest.TestCase):
+    maxDiff = None
+
+    def find(self, value):
+        return path.find_mtimes(path_to_data_dir(value))
+
+    def test_basic_dir(self):
+        self.assert_(self.find(''))
+
+    def test_nonexistant_dir(self):
+        self.assertEqual(self.find('does-not-exist'), {})
+
+    def test_file(self):
+        self.assertEqual({path_to_data_dir('blank.mp3'): any_int},
+                         self.find('blank.mp3'))
+
+    def test_files(self):
+        mtimes = self.find('find')
+        expected_files = [
+            b'find/foo/bar/file', b'find/foo/file', b'find/baz/file']
+        expected = {path_to_data_dir(p): any_int for p in expected_files}
+        self.assertEqual(expected, mtimes)
+
+    def test_names_are_bytestrings(self):
+        is_bytes = lambda f: isinstance(f, bytes)
+        for name in self.find(''):
+            self.assert_(
+                is_bytes(name), '%s is not bytes object' % repr(name))
+
+
 # TODO: kill this in favour of just os.path.getmtime + mocks
 class MtimeTest(unittest.TestCase):
     def tearDown(self):