Source

pylibftdi / tests / test_driver.py

Diff from to

tests/test_driver.py

         self.assertCalls(lambda: Device(), 'ftdi_usb_open')
         # and given a device_id, it should do a open_desc
         self.assertCalls(lambda: Device('bogus'), 'ftdi_usb_open_desc')
+        # check that opening a specific interface does that
+
+    def testOpenInterface(self):
+        self.assertCalls(lambda: Device(interface=1), 'ftdi_set_interface')
+        # check that opening a specific interface does that
+        self.assertNotCalls(lambda: Device(), 'ftdi_set_interface')
 
     def testReadWrite(self):
         with Device() as dev:
         self.assertEqual(d.readline(), 'Bye')
 
 
-
 if __name__ == "__main__":
     unittest.main()
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