add a test suite for App(), only two tests for now

kivy/tests/test_app.py

@@ -0,0 +1,18 @@
+import unittest
+from kivy.app import App
+from kivy.clock import Clock
+
+
+class AppTest(unittest.TestCase):
+    def test_start_raw_app(self):
+        a = App()
+        Clock.schedule_once(a.stop, .1)
+        a.run()
+
+    def test_start_app_with_kv(self):
+        class TestKvApp(App):
+            pass
+
+        a = TestKvApp()
+        Clock.schedule_once(a.stop, .1)
+        a.run()

kivy/tests/testkv.kv

@@ -0,0 +1 @@
+#:kivy 1.4.1