add test for Motor device

mpf/tests/machine_files/motor/config/config.yaml

@@ -0,0 +1,24 @@
+#config_version=4
+
+switches:
+    s_position_up:
+        number:
+    s_position_down:
+        number:
+
+coils:
+    c_motor_run:
+        number:
+        allow_enable: True
+
+motors:
+    motorized_drop_target_bank:
+        motor_coil: c_motor_run
+        position_switches:
+            up: s_position_up
+            down: s_position_down
+        reset_position: down
+        go_to_position:
+            go_up: up
+            go_down: down
+            go_down2: down

mpf/tests/test_Motors.py

@@ -0,0 +1,68 @@
+from unittest.mock import MagicMock
+
+from mpf.tests.MpfTestCase import MpfTestCase
+
+
+class TestMotors(MpfTestCase):
+
+    def getConfigFile(self):
+        return 'config.yaml'
+
+    def getMachinePath(self):
+        return 'tests/machine_files/motor/'
+
+    def testMotorizedDropTargetBank(self):
+        motor = self.machine.motors.motorized_drop_target_bank
+        coil = self.machine.coils.c_motor_run
+        coil.enable = MagicMock()
+        coil.disable = MagicMock()
+
+        # reset should move it down
+        motor.reset()
+        self.advance_time_and_run()
+        coil.enable.assert_called_with()
+        coil.enable = MagicMock()
+        assert not coil.disable.called
+
+        # it goes up. nothing should happen
+        self.hit_switch_and_run("s_position_up", 1)
+        assert not coil.enable.called
+        assert not coil.disable.called
+
+        # it leaves up position
+        self.release_switch_and_run("s_position_up", 1)
+        assert not coil.enable.called
+        assert not coil.disable.called
+
+        self.advance_time_and_run(5)
+        # it goes down. motor should stop
+        self.hit_switch_and_run("s_position_down", 1)
+        assert not coil.enable.called
+        coil.disable.assert_called_with()
+        coil.disable = MagicMock()
+
+        # should not start motor
+        self.post_event("go_down2")
+        self.advance_time_and_run()
+        assert not coil.enable.called
+        coil.disable.assert_called_with()
+        coil.disable = MagicMock()
+
+        # go up
+        self.post_event("go_up")
+        self.advance_time_and_run()
+        coil.enable.assert_called_with()
+        coil.enable = MagicMock()
+        assert not coil.disable.called
+
+        # it leaves down position
+        self.release_switch_and_run("s_position_down", 0)
+        assert not coil.enable.called
+        assert not coil.disable.called
+
+        self.advance_time_and_run(5)
+        # it goes up. motor should stop
+        self.hit_switch_and_run("s_position_up", 1)
+        assert not coil.enable.called
+        coil.disable.assert_called_with()
+        coil.disable = MagicMock()