From 67dd919fedd951338508cc781937e3ad95bf688b Mon Sep 17 00:00:00 2001
From: "Brady L. Hurlburt" <bradyhurlburt@gmail.com>
Date: Fri, 6 May 2016 17:07:01 +0000
Subject: [PATCH] Adds softpwm test

---
 test/test_softpwm_setup.py | 104 +++++++++++++++++++++++++++++++++++++
 1 file changed, 104 insertions(+)
 create mode 100644 test/test_softpwm_setup.py

diff --git a/test/test_softpwm_setup.py b/test/test_softpwm_setup.py
new file mode 100644
index 0000000..e2a9284
--- /dev/null
+++ b/test/test_softpwm_setup.py
@@ -0,0 +1,104 @@
+import pytest
+import os
+
+import CHIP_IO.SOFTPWM as PWM
+
+def teardown_module(module):
+    PWM.cleanup()
+
+class TestSoftpwmSetup:
+    def test_start_pwm(self):
+        PWM.start("XIO-P7", 50, 10)
+        assert os.path.exists('/sys/class/gpio/gpio415')
+        direction = open('/sys/class/gpio/gpio415/direction').read()
+        assert direction == 'out\n'
+        PWM.cleanup()
+
+    def test_pwm_start_invalid_pwm_key(self):
+        with pytest.raises(ValueError):
+            PWM.start("P8_25", -1)
+
+    def test_pwm_start_invalid_duty_cycle_negative(self):
+        with pytest.raises(ValueError):
+            PWM.start("XIO-P7", -1)
+
+    def test_pwm_start_valid_duty_cycle_min(self):
+        #testing an exception isn't thrown
+        PWM.start("XIO-P7", 0)
+        PWM.cleanup()
+
+    def test_pwm_start_valid_duty_cycle_max(self):
+        #testing an exception isn't thrown
+        PWM.start("XIO-P7", 100)
+        PWM.cleanup()
+
+    def test_pwm_start_invalid_duty_cycle_high(self):
+        with pytest.raises(ValueError):
+            PWM.start("XIO-P7", 101)
+
+    def test_pwm_start_invalid_duty_cycle_string(self):
+        with pytest.raises(TypeError):
+            PWM.start("XIO-P7", "1")
+
+    def test_pwm_start_invalid_frequency_negative(self):
+        with pytest.raises(ValueError):
+            PWM.start("XIO-P7", 0, -1)
+
+    def test_pwm_start_invalid_frequency_string(self):
+        with pytest.raises(TypeError):
+            PWM.start("XIO-P7", 0, "1")
+
+    def test_pwm_start_negative_polarity(self):
+        with pytest.raises(ValueError):
+            PWM.start("XIO-P7", 0, 100, -1)
+
+    def test_pwm_start_invalid_positive_polarity(self):
+        with pytest.raises(ValueError):
+            PWM.start("XIO-P7", 0, 100, 2)
+
+    def test_pwm_start_invalid_polarity_type(self):
+        with pytest.raises(TypeError):
+            PWM.start("XIO-P7", 0, 100, "1")
+
+    def test_pwm_duty_cycle_non_setup_key(self):
+        with pytest.raises(RuntimeError):
+            PWM.set_duty_cycle("XIO-P7", 100)
+            PWM.cleanup()
+
+    def test_pwm_duty_cycle_invalid_key(self):
+        with pytest.raises(ValueError):
+            PWM.set_duty_cycle("P9_15", 100)
+            PWM.cleanup()
+
+    def test_pwm_duty_cycle_invalid_value_high(self):
+        PWM.start("XIO-P7", 0)
+        with pytest.raises(ValueError):
+            PWM.set_duty_cycle("XIO-P7", 101)
+            PWM.cleanup()
+
+    def test_pwm_duty_cycle_invalid_value_negative(self):
+        PWM.start("XIO-P7", 0)
+        with pytest.raises(ValueError):
+            PWM.set_duty_cycle("XIO-P7", -1)
+            PWM.cleanup()
+
+    def test_pwm_duty_cycle_invalid_value_string(self):
+        PWM.start("XIO-P7", 0)
+        with pytest.raises(TypeError):
+            PWM.set_duty_cycle("XIO-P7", "a")
+            PWM.cleanup()
+
+    def test_pwm_frequency_invalid_value_negative(self):
+        PWM.start("XIO-P7", 0)
+        with pytest.raises(ValueError):
+            PWM.set_frequency("XIO-P7", -1)
+            PWM.cleanup()
+
+    def test_pwm_frequency_invalid_value_string(self):
+        PWM.start("XIO-P7", 0)
+        with pytest.raises(TypeError):
+            PWM.set_frequency("XIO-P7", "11")
+            PWM.cleanup()
+
+    def test_stop_pwm(self):
+        pass