+import unittest
+
+class TestMicrocontrollerModule(unittest.TestCase):
+
+ def test_pins_exist(self):
+ """The microcontroller module should contain pin references"""
+ import microcontroller
+ from microcontroller import pin
+ from testing.microcontroller import pin_count
+ entries = [getattr(pin, key) for key in dir(pin)]
+ # is this filter line needed? any other types valid in pin module?
+ entries = list(filter(lambda val: type(val) is microcontroller.Pin, entries))
+ self.assertTrue(len(entries) > 0)
+ self.assertTrue(len(entries) == pin_count)
\ No newline at end of file