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import os
import sys
import time
import periphery
from .test import ptest, pokay, passert, AssertRaises
if sys.version_info[0] == 3:
raw_input = input
led_name = None
def test_arguments():
ptest()
# Invalid open types
with AssertRaises("invalid open types", TypeError):
periphery.LED("abc", "out")
with AssertRaises("invalid open types", TypeError):
periphery.LED(100, 100)
def test_open_close():
ptest()
# Open non-existent LED
with AssertRaises("non-existent led", LookupError):
periphery.LED("invalid_led_XXX", 0)
# Open legitimate LED
led = periphery.LED(led_name, 0)
passert("property name", led.name == led_name)
passert("fd >= 0", led.fd >= 0)
passert("max_brightness > 0", led.max_brightness > 0)
# Set brightness to True, check brightness
led.write(True)
time.sleep(0.01)
passert("brightness is max", led.read() == led.max_brightness)
# Set brightness to False, check brightness
led.write(False)
time.sleep(0.01)
passert("brightness is zero", led.read() == 0)
# Set brightness to 1, check brightness
led.write(1)
time.sleep(0.01)
passert("brightness is non-zero", led.read() >= 1)
# Set brightness to 0, check brightness
led.write(0)
time.sleep(0.01)
passert("brightness is zero", led.read() == 0)
# Set brightness to 1, check brightness
led.brightness = 1
time.sleep(0.01)
passert("brightness is non-zero", led.brightness >= 1)
# Set brightness to 0, check brightness
led.brightness = 0
time.sleep(0.01)
passert("brightness is zero", led.brightness == 0)
led.close()
def test_loopback():
ptest()
# No general way to do a loopback test for I2C without a real component, skipping...
def test_interactive():
ptest()
led = periphery.LED(led_name, False)
raw_input("Press enter to continue...")
# Check tostring
print("LED description: {}".format(str(led)))
passert("interactive success", raw_input("LED description looks ok? y/n ") == "y")
# Turn LED off
led.write(False)
passert("interactive success", raw_input("LED is off? y/n ") == "y")
# Turn LED on
led.write(True)
passert("interactive success", raw_input("LED is on? y/n ") == "y")
# Turn LED off
led.write(False)
passert("interactive success", raw_input("LED is off? y/n ") == "y")
# Turn LED on
led.write(True)
passert("interactive success", raw_input("LED is on? y/n ") == "y")
led.close()
if __name__ == "__main__":
if os.environ.get("CI") == "true":
test_arguments()
sys.exit(0)
if len(sys.argv) < 2:
print("Usage: python -m tests.test_led <LED name>")
print("")
print("[1/4] Arguments test: No requirements.")
print("[2/4] Open/close test: LED should be real.")
print("[3/4] Loopback test: No test.")
print("[4/4] Interactive test: LED should be observed.")
print("")
print("Hint: for Raspberry Pi 3, disable triggers for led1:")
print(" $ echo none > /sys/class/leds/led1/trigger")
print("Observe led1 (red power LED), and run this test:")
print(" python -m tests.test_led led1")
print("")
sys.exit(1)
led_name = sys.argv[1]
test_arguments()
pokay("Arguments test passed.")
test_open_close()
pokay("Open/close test passed.")
test_loopback()
pokay("Loopback test passed.")
test_interactive()
pokay("Interactive test passed.")
pokay("All tests passed!")
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