python/testing/implementation/all/digitalio.py

   1 import unittest
   2 from testing import yes_no, await_true
   3 from testing.board import led_pin, default_pin
   4 import digitalio
   5 from digitalio import * # TODO refactor below for wildcard import
   6
   7
   8 class TestDigitalInOut(unittest.TestCase):
   9
  10     def test_default(self):
  11         """DigitalInOut is input with no pull when constructed"""
  12         with digitalio.DigitalInOut(default_pin) as dio:
  13             self.assertEqual(dio.direction, digitalio.Direction.INPUT)
  14             self.assertEqual(dio.pull, None)
  15
  16     def test_switch_to_output(self):
  17         """Default configuration of switch_to_output is respected"""
  18         with digitalio.DigitalInOut(default_pin) as dio:
  19             dio.switch_to_output()
  20             self.assertEqual(dio.direction, digitalio.Direction.OUTPUT)
  21             self.assertEqual(dio.value, 0)
  22             self.assertEqual(dio.drive_mode, digitalio.DriveMode.PUSH_PULL)
  23
  24     def test_switch_to_input(self):
  25         """Default configuration of switch_to_input is respected"""
  26         with digitalio.DigitalInOut(default_pin) as dio:
  27             dio.switch_to_output() # starts as input anyway
  28             dio.switch_to_input()
  29             self.assertEqual(dio.direction, digitalio.Direction.INPUT)
  30             self.assertEqual(dio.pull, None)
  31
  32
  33 class TestDigitalInOutInteractive(unittest.TestCase):
  34
  35     def test_blink(self):
  36         """LED blinks when proper attributes set"""
  37         from agnostic import sleep
  38         self.assertTrue(yes_no("Is LED wired to {}".format(led_pin)))
  39         with digitalio.DigitalInOut(led_pin) as led:
  40             led.direction = digitalio.Direction.OUTPUT
  41             # should now be OUT, PUSH_PULL, value=0, and LED should light
  42             self.assertTrue(yes_no("Is LED lit"))
  43             for count in range(2):
  44                 led.value = True
  45                 sleep(0.5)
  46                 led.value = False
  47                 sleep(0.5)
  48             self.assertTrue(yes_no("Did LED wink twice"))
  49
  50     def test_button_pull_up(self):
  51         """Pull-up button configured and detected"""
  52         if yes_no("Is Button wired to {} to GND".format(default_pin)):
  53             with digitalio.DigitalInOut(default_pin) as button:
  54                 button.direction = digitalio.Direction.INPUT
  55                 try:
  56                     button.pull = digitalio.Pull.UP
  57                 except NotImplementedError as e:
  58                     print(e)
  59                     return
  60                 self.assertTrue(button.value == 1)
  61                 self.assertTrue(await_true("button pressed", lambda: button.value == 0))
  62
  63     def test_button_pull_down(self):
  64         """Pull-down button configured and detected"""
  65         if(yes_no("Is Button wired from {} to VCC".format(default_pin))):
  66             with digitalio.DigitalInOut(default_pin) as button:
  67                 button.direction = digitalio.Direction.INPUT
  68                 try:
  69                     button.pull = digitalio.Pull.DOWN
  70                 except NotImplementedError as e:
  71                     print(e)
  72                     return
  73                 self.assertTrue(button.value == 0)
  74                 self.assertTrue(await_true("button pressed", lambda: button.value == 1))
  75