diff --git a/tests/__init__.py b/tests/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/tests/test_user_manager.py b/tests/test_user_manager.py
new file mode 100644
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--- /dev/null
+++ b/tests/test_user_manager.py
@@ -0,0 +1,92 @@
+#! /usr/bin/env python
+# -*- coding: utf-8 -*-
+# vim:fenc=utf-8
+#
+# Copyright © 2017 Óscar García Amor <ogarcia@connectical.com>
+#
+# Distributed under terms of the GNU GPLv3 license.
+
+from supysonic import db
+from supysonic.managers.user import UserManager
+
+import unittest
+import uuid
+
+class UserManagerTestCase(unittest.TestCase):
+    def setUp(self):
+        # Create an empty sqlite database in memory
+        self.store = db.get_store("sqlite:")
+        # Read schema from file
+        with open('schema/sqlite.sql') as sql:
+            schema = sql.read()
+        # Create tables on memory database
+        for command in schema.split(';'):
+            self.store.execute(command)
+        # Create some users
+        self.assertEqual(UserManager.add(self.store, 'alice', 'alice', 'test@example.com', True), UserManager.SUCCESS)
+        self.assertEqual(UserManager.add(self.store, 'bob', 'bob', 'bob@example.com', False), UserManager.SUCCESS)
+        self.assertEqual(UserManager.add(self.store, 'charlie', 'charlie', 'charlie@example.com', False), UserManager.SUCCESS)
+
+    def test_encrypt_password(self):
+        self.assertEqual(UserManager._UserManager__encrypt_password('password','salt'), ('59b3e8d637cf97edbe2384cf59cb7453dfe30789', 'salt'))
+        self.assertEqual(UserManager._UserManager__encrypt_password('pass-word','pepper'), ('d68c95a91ed7773aa57c7c044d2309a5bf1da2e7', 'pepper'))
+
+    def test_get_user(self):
+        # Get existing users
+        for name in ['alice', 'bob', 'charlie']:
+            user = self.store.find(db.User, db.User.name == name).one()
+            self.assertEqual(UserManager.get(self.store, user.id), (UserManager.SUCCESS, user))
+        # Get with invalid UUID
+        self.assertEqual(UserManager.get(self.store, 'invalid-uuid'), (UserManager.INVALID_ID, None))
+        # Non-existent user
+        self.assertEqual(UserManager.get(self.store, uuid.uuid4()), (UserManager.NO_SUCH_USER, None))
+
+    def test_add_user(self):
+        # Create duplicate
+        self.assertEqual(UserManager.add(self.store, 'alice', 'alice', 'test@example.com', True), UserManager.NAME_EXISTS)
+
+    def test_delete_user(self):
+        # Delete existing users
+        for name in ['alice', 'bob', 'charlie']:
+            user = self.store.find(db.User, db.User.name == name).one()
+            self.assertEqual(UserManager.delete(self.store, user.id), UserManager.SUCCESS)
+        # Delete invalid UUID
+        self.assertEqual(UserManager.delete(self.store, 'invalid-uuid'), UserManager.INVALID_ID)
+        # Delete non-existent user
+        self.assertEqual(UserManager.delete(self.store, uuid.uuid4()), UserManager.NO_SUCH_USER)
+
+    def test_try_auth(self):
+        # Test authentication
+        for name in ['alice', 'bob', 'charlie']:
+            user = self.store.find(db.User, db.User.name == name).one()
+            self.assertEqual(UserManager.try_auth(self.store, name, name), (UserManager.SUCCESS, user))
+        # Wrong password
+        self.assertEqual(UserManager.try_auth(self.store, name, 'bad'), (UserManager.WRONG_PASS, None))
+        # Non-existent user
+        self.assertEqual(UserManager.try_auth(self.store, 'null', 'null'), (UserManager.NO_SUCH_USER, None))
+
+    def test_change_password(self):
+        # With existing users
+        for name in ['alice', 'bob', 'charlie']:
+            user = self.store.find(db.User, db.User.name == name).one()
+            # God password
+            self.assertEqual(UserManager.change_password(self.store, user.id, name, 'newpass'), UserManager.SUCCESS)
+            self.assertEqual(UserManager.try_auth(self.store, name, 'newpass'), (UserManager.SUCCESS, user))
+            # Wrong password
+            self.assertEqual(UserManager.change_password(self.store, user.id, 'badpass', 'newpass'), UserManager.WRONG_PASS)
+        # With invalid UUID
+        self.assertEqual(UserManager.change_password(self.store, 'invalid-uuid', 'oldpass', 'newpass'), UserManager.INVALID_ID)
+        # Non-existent user
+        self.assertEqual(UserManager.change_password(self.store, uuid.uuid4(), 'oldpass', 'newpass'), UserManager.NO_SUCH_USER)
+
+    def test_change_password2(self):
+        # With existing users
+        for name in ['alice', 'bob', 'charlie']:
+            self.assertEqual(UserManager.change_password2(self.store, name, 'newpass'), UserManager.SUCCESS)
+            user = self.store.find(db.User, db.User.name == name).one()
+            self.assertEqual(UserManager.try_auth(self.store, name, 'newpass'), (UserManager.SUCCESS, user))
+        # Non-existent user
+        self.assertEqual(UserManager.change_password2(self.store, 'null', 'newpass'), UserManager.NO_SUCH_USER)
+
+if __name__ == '__main__':
+    unittest.main()