Test core functions without importing EV3 module

WasabiFan · WasabiFan · commit bb76ce30a5ff · 2016-09-02T21:15:56.000-07:00
Importing the EV3 module attempts to register LEDs, which fails in the test environment.
diff --git a/tests/api_tests.py b/tests/api_tests.py
@@ -9,7 +9,7 @@
 from populate_arena import populate_arena
 from clean_arena    import clean_arena
 
-import ev3dev.ev3 as ev3
+import ev3dev.core as ev3
 
 ev3.Device.DEVICE_ROOT_PATH = os.path.join(FAKE_SYS, 'arena')
 
