test/src/testing/universal/digitalio.py

   1 import unittest
   2 from testing import yes_no, await_true
   3 from testing.board import led_pin, default_pin, led_hardwired, led_inverted
   4 from digitalio import *
   5
   6 class TestDigitalInOut(unittest.TestCase):
   7
   8     def test_default(self):
   9         """DigitalInOut is input with no pull when constructed"""
  10         with DigitalInOut(default_pin) as dio:
  11             self.assertEqual(dio.direction, Direction.INPUT)
  12             self.assertEqual(dio.pull, None)
  13
  14     def test_switch_to_output(self):
  15         """Default configuration of switch_to_output is respected"""
  16         with DigitalInOut(default_pin) as dio:
  17             dio.switch_to_output()
  18             self.assertEqual(dio.direction, Direction.OUTPUT)
  19             self.assertEqual(dio.value, False)
  20             self.assertEqual(dio.drive_mode, DriveMode.PUSH_PULL)
  21
  22     def test_switch_to_input(self):
  23         """Default configuration of switch_to_input is respected"""
  24         with DigitalInOut(default_pin) as dio:
  25             dio.switch_to_output() # starts as input anyway
  26             dio.switch_to_input()
  27             self.assertEqual(dio.direction, Direction.INPUT)
  28             self.assertEqual(dio.pull, None)
  29
  30
  31 class TestDigitalInOutInteractive(unittest.TestCase):
  32
  33     def test_blink(self):
  34         """LED blinks when proper attributes set"""
  35         print()
  36         from adafruit_blinka.agnostic import sleep
  37         if not(led_hardwired) and not(yes_no("Is LED wired to {}".format(led_pin))):
  38             return # test trivially passed
  39         with DigitalInOut(led_pin) as led:
  40             led.direction = Direction.OUTPUT
  41             # should now be OUT, PUSH_PULL, value=0, and LED should light
  42             led.value = False if led_inverted else True
  43             self.assertTrue(yes_no("Is LED lit"))
  44             print("Winking LED...")
  45             for count in range(2):
  46                 led.value = not(led.value)
  47                 sleep(0.5)
  48                 led.value = not(led.value)
  49                 sleep(0.5)
  50             self.assertTrue(yes_no("Did LED wink twice"))
  51
  52     def test_button_pull_up(self):
  53         print()
  54         """Pull-up button configured and detected"""
  55         with DigitalInOut(default_pin) as button:
  56             #button.direction = Direction.INPUT # implied
  57             try:
  58                 button.pull = Pull.UP
  59             except NotImplementedError as e:
  60                 print(e)
  61                 return  # pull unsupported, test trivially passed
  62             except Exception as e:
  63                 print(e)
  64                 return  # pull unsupported, test trivially passed
  65             if yes_no("Is Button wired from {} to GND".format(default_pin)):
  66                 self.assertTrue(button.value == True)
  67                 self.assertTrue(await_true("button pressed", lambda: button.value == False))
  68
  69     def test_button_pull_down(self):
  70         print()
  71         """Pull-down button configured and detected"""
  72         with DigitalInOut(default_pin) as button:
  73             #button.direction = Direction.INPUT # implied
  74             try:
  75                 button.pull = Pull.DOWN
  76             except NotImplementedError as e:
  77                 print(e)
  78                 return  # pull unsupported, test trivially passed
  79             except Exception as e:
  80                 print(e)
  81                 return  # pull unsupported, test trivially passed
  82             if (yes_no("Is Button wired from {} to VCC".format(default_pin))):
  83                 self.assertTrue(button.value == False)
  84                 self.assertTrue(await_true("button pressed", lambda: button.value == True))
  85