diff --git a/tests/test.py b/tests/test.py
index eae57fa8..5bf0b715 100644
--- a/tests/test.py
+++ b/tests/test.py
@@ -184,6 +184,16 @@ def patch_evdev():
             self.name = fixtures[path]['name']
             self.fd = self.name
 
+            def absinfo(axis):
+                return {
+                    evdev.ecodes.EV_ABS: evdev.AbsInfo(
+                        value=None, min=None, fuzz=None, flat=None,
+                        resolution=None, max=2**15
+                    )
+                }[axis]
+
+            self.absinfo = absinfo
+
         def grab(self):
             pass
 
diff --git a/tests/testcases/injector.py b/tests/testcases/injector.py
index dd351241..cd0e20d7 100644
--- a/tests/testcases/injector.py
+++ b/tests/testcases/injector.py
@@ -138,6 +138,11 @@ class TestInjector(unittest.TestCase):
         toggle_numlock()
         self.assertEqual(before, is_numlock_on())
 
+    def test_abs_to_rel(self):
+        # maps gamepad joystick events to mouse events
+        # TODO enable this somewhere so that map_abs_to_rel returns true
+        pass
+
     def test_injector(self):
         custom_mapping.change(8, 'k(q).k(w)')
         custom_mapping.change(9, 'a')