adafruit-mirror/adafruit-beaglebone-io-python
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Add cleanup before each test, to avoid cascading failures due to already-setup pins

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This commit is contained in:
Matthew West 2016-08-10 09:07:40 -07:00
parent 472e2f964d
commit 08ea892889
1 changed files with 39 additions and 14 deletions
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49
test/test_pwm_setup.py
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@ -1,9 +1,9 @@
import pytest
import glob
import os
import platform
import glob
import Adafruit_BBIO.PWM as PWM
import pytest
kernel = platform.release()
@ -14,6 +14,7 @@ def teardown_module(module):
class TestPwmSetup:
def test_start_pwm(self):
PWM.cleanup()
PWM.start("P9_14", 0)
if kernel >= '4.1.0':
@ -29,9 +30,9 @@ class TestPwmSetup:
pwm_dir = results[0]
else:
files = os.listdir('/sys/devices')
ocp = '/sys/devices/'+[s for s in files if s.startswith('ocp')][0]
ocp = '/sys/devices/' + [s for s in files if s.startswith('ocp')][0]
files = os.listdir(ocp)
pwm_dir = ocp+'/'+[s for s in files if s.startswith('pwm_test_P9_14')][0]
pwm_dir = ocp + '/' + [s for s in files if s.startswith('pwm_test_P9_14')][0]
assert os.path.exists(pwm_dir)
if kernel >= '4.1.0':
@ -44,15 +45,16 @@ class TestPwmSetup:
PWM.cleanup()
def test_start_pwm_with_polarity_one(self):
PWM.cleanup()
PWM.start("P9_14", 0, 2000, 1)
if kernel >= '4.1.0':
pwm_dir = "/sys/devices/platform/ocp/48302000.epwmss/48302200.ehrpwm/pwm/pwmchip2/pwm0"
else:
files = os.listdir('/sys/devices')
ocp = '/sys/devices/'+[s for s in files if s.startswith('ocp')][0]
ocp = '/sys/devices/' + [s for s in files if s.startswith('ocp')][0]
files = os.listdir(ocp)
pwm_dir = ocp+'/'+[s for s in files if s.startswith('pwm_test_P9_14')][0]
pwm_dir = ocp + '/' + [s for s in files if s.startswith('pwm_test_P9_14')][0]
assert os.path.exists(pwm_dir)
if kernel >= '4.1.0':
@ -71,15 +73,16 @@ class TestPwmSetup:
PWM.cleanup()
def test_start_pwm_with_polarity_default(self):
PWM.cleanup()
PWM.start("P9_14", 0, 2000)
if kernel >= '4.1.0':
pwm_dir = "/sys/devices/platform/ocp/48302000.epwmss/48302200.ehrpwm/pwm/pwmchip2/pwm0"
else:
files = os.listdir('/sys/devices')
ocp = '/sys/devices/'+[s for s in files if s.startswith('ocp')][0]
ocp = '/sys/devices/' + [s for s in files if s.startswith('ocp')][0]
files = os.listdir(ocp)
pwm_dir = ocp+'/'+[s for s in files if s.startswith('pwm_test_P9_14')][0]
pwm_dir = ocp + '/' + [s for s in files if s.startswith('pwm_test_P9_14')][0]
assert os.path.exists(pwm_dir)
if kernel >= '4.1.0':
@ -98,15 +101,16 @@ class TestPwmSetup:
PWM.cleanup()
def test_start_pwm_with_polarity_zero(self):
PWM.cleanup()
PWM.start("P9_14", 0, 2000, 0)
if kernel >= '4.1.0':
pwm_dir = "/sys/devices/platform/ocp/48302000.epwmss/48302200.ehrpwm/pwm/pwmchip2/pwm0"
else:
files = os.listdir('/sys/devices')
ocp = '/sys/devices/'+[s for s in files if s.startswith('ocp')][0]
ocp = '/sys/devices/' + [s for s in files if s.startswith('ocp')][0]
files = os.listdir(ocp)
pwm_dir = ocp+'/'+[s for s in files if s.startswith('pwm_test_P9_14')][0]
pwm_dir = ocp + '/' + [s for s in files if s.startswith('pwm_test_P9_14')][0]
assert os.path.exists(pwm_dir)
if kernel >= '4.1.0':
@ -125,61 +129,73 @@ class TestPwmSetup:
PWM.cleanup()
def test_pwm_start_invalid_pwm_key(self):
PWM.cleanup()
with pytest.raises(ValueError):
PWM.start("P8_25", -1)
def test_pwm_start_invalid_duty_cycle_negative(self):
PWM.cleanup()
with pytest.raises(ValueError):
PWM.start("P9_14", -1)
def test_pwm_start_valid_duty_cycle_min(self):
PWM.cleanup()
# testing an exception isn't thrown
PWM.start("P9_14", 0)
PWM.cleanup()
def test_pwm_start_valid_duty_cycle_max(self):
PWM.cleanup()
# testing an exception isn't thrown
PWM.start("P9_14", 100)
PWM.cleanup()
def test_pwm_start_invalid_duty_cycle_high(self):
PWM.cleanup()
with pytest.raises(ValueError):
PWM.start("P9_14", 101)
def test_pwm_start_invalid_duty_cycle_string(self):
PWM.cleanup()
with pytest.raises(TypeError):
PWM.start("P9_14", "1")
def test_pwm_start_invalid_frequency_negative(self):
PWM.cleanup()
with pytest.raises(ValueError):
PWM.start("P9_14", 0, -1)
def test_pwm_start_invalid_frequency_string(self):
PWM.cleanup()
with pytest.raises(TypeError):
PWM.start("P9_14", 0, "1")
def test_pwm_start_negative_polarity(self):
PWM.cleanup()
with pytest.raises(ValueError):
PWM.start("P9_14", 0, 100, -1)
def test_pwm_start_invalid_positive_polarity(self):
PWM.cleanup()
with pytest.raises(ValueError):
PWM.start("P9_14", 0, 100, 2)
def test_pwm_start_invalid_polarity_type(self):
PWM.cleanup()
with pytest.raises(TypeError):
PWM.start("P9_14", 0, 100, "1")
def test_pwm_duty_modified(self):
PWM.cleanup()
PWM.start("P9_14", 0)
if kernel >= '4.1.0':
pwm_dir = "/sys/devices/platform/ocp/48302000.epwmss/48302200.ehrpwm/pwm/pwmchip2/pwm0"
else:
files = os.listdir('/sys/devices')
ocp = '/sys/devices/'+[s for s in files if s.startswith('ocp')][0]
ocp = '/sys/devices/' + [s for s in files if s.startswith('ocp')][0]
files = os.listdir(ocp)
pwm_dir = ocp+'/'+[s for s in files if s.startswith('pwm_test_P9_14')][0]
pwm_dir = ocp + '/' + [s for s in files if s.startswith('pwm_test_P9_14')][0]
assert os.path.exists(pwm_dir)
if kernel >= '4.1.0':
@ -201,51 +217,60 @@ class TestPwmSetup:
PWM.cleanup()
def test_pwm_duty_cycle_non_setup_key(self):
PWM.cleanup()
with pytest.raises(RuntimeError):
PWM.set_duty_cycle("P9_14", 100)
PWM.cleanup()
def test_pwm_duty_cycle_invalid_key(self):
PWM.cleanup()
with pytest.raises(ValueError):
PWM.set_duty_cycle("P9_15", 100)
PWM.cleanup()
def test_pwm_duty_cycle_invalid_value_high(self):
PWM.cleanup()
PWM.start("P9_14", 0)
with pytest.raises(ValueError):
PWM.set_duty_cycle("P9_14", 101)
PWM.cleanup()
def test_pwm_duty_cycle_invalid_value_negative(self):
PWM.cleanup()
PWM.start("P9_14", 0)
with pytest.raises(ValueError):
PWM.set_duty_cycle("P9_14", -1)
PWM.cleanup()
def test_pwm_duty_cycle_invalid_value_string(self):
PWM.cleanup()
PWM.start("P9_14", 0)
with pytest.raises(TypeError):
PWM.set_duty_cycle("P9_14", "a")
PWM.cleanup()
def test_pwm_frequency_invalid_value_negative(self):
PWM.cleanup()
PWM.start("P9_14", 0)
with pytest.raises(ValueError):
PWM.set_frequency("P9_14", -1)
PWM.cleanup()
def test_pwm_frequency_invalid_value_string(self):
PWM.cleanup()
PWM.start("P9_14", 0)
with pytest.raises(TypeError):
PWM.set_frequency("P9_14", "11")
PWM.cleanup()
def test_pwm_freq_non_setup_key(self):
PWM.cleanup()
with pytest.raises(RuntimeError):
PWM.set_frequency("P9_14", 100)
PWM.cleanup()
def test_pwm_freq_non_setup_invalid_key(self):
PWM.cleanup()
with pytest.raises(ValueError):
PWM.set_frequency("P9_15", 100)
PWM.cleanup()