tests: add python test cases suite

Currently only galileo is supported. This commit removes the old GTEST stuff
and mraa_test.cxx which never did much

Signed-off-by: Costin Constantin <costin.c.constantin@intel.com>
Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>

tests/gpio_checks.py

@@ -0,0 +1,91 @@
+#!/usr/bin/env python
+
+# Author: Costin Constantin <costin.c.constantin@intel.com>
+# Copyright (c) 2015 Intel Corporation.
+#
+# Permission is hereby granted, free of charge, to any person obtaining
+# a copy of this software and associated documentation files (the
+# "Software"), to deal in the Software without restriction, including
+# without limitation the rights to use, copy, modify, merge, publish,
+# distribute, sublicense, and/or sell copies of the Software, and to
+# permit persons to whom the Software is furnished to do so, subject to
+# the following conditions:
+#
+# The above copyright notice and this permission notice shall be
+# included in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+import mraa as m
+import unittest as u
+import os, re, sys
+from time import sleep
+
+MRAA_GPIO = 3
+
+@u.skipIf(m.pinModeTest(MRAA_GPIO, m.PIN_GPIO) != True, str(MRAA_GPIO) + "is not a valid Gpio on this platform")
+class GpioChecks(u.TestCase):
+
+  def setUp(self):
+    self.pin = m.Gpio(MRAA_GPIO)
+    self.gpio_path = "/sys/class/gpio/gpio" + str(self.pin.getPin(True))
+
+  def tearDown(self):
+    # dereference pin to force cleanup
+    self.pin = ""
+
+  def test_returning_pin_no(self):
+    self.pin_no = self.pin.getPin() # i should have the pin no. here as set when initing Gpio class
+    self.assertEqual(self.pin_no, MRAA_GPIO, "Something wrong happened ... set pin doesn't correspond to retrieved one")
+
+  def test_returning_pin_as_on_sys(self):
+    self.assertTrue(os.path.exists(self.gpio_path))
+
+  def test_set_GPIO_as_output(self):
+    self.pin.dir(m.DIR_OUT)
+    dir_file = open(self.gpio_path + "/direction")
+    dir_file_content = dir_file.readline()[:-1]
+    dir_file.close()
+    self.assertMultiLineEqual(dir_file_content, "out")
+
+  def test_set_GPIO_as_input(self):
+    self.pin.dir(m.DIR_IN)
+    dir_file = open(self.gpio_path + "/direction")
+    dir_file_content = dir_file.readline()[:-1]
+    dir_file.close()
+    self.assertMultiLineEqual(dir_file_content, "in")
+
+  def test_GPIO_as_output_write_HIGH_level(self):
+    self.pin.dir(m.DIR_OUT)
+    self.pin.write(1)
+    val_file = open(self.gpio_path + "/value")
+    sysfs_pin_value = val_file.readline()[:-1]
+    val_file.close()
+    self.assertEqual(int(sysfs_pin_value),1, "Value doesn't match the HIGH state")
+
+  def test_GPIO_as_output_write_LOW_level(self):
+    self.pin.dir(m.DIR_OUT)
+    self.pin.write(0)
+    val_file = open(self.gpio_path + "/value")
+    sysfs_pin_value = val_file.readline()[:-1]
+    val_file.close()
+    self.assertEqual(int(sysfs_pin_value), 0, "Value doesn't match the LOW state")
+
+  def test_GPIO_as_input_and_write_HIGH_on_it(self):
+    self.pin.dir(m.DIR_IN)
+    res = self.pin.write(1)
+    self.assertNotEqual(res, m.SUCCESS, "The command should fail")
+
+  def test_GPIO_as_input_and_write_LOW_on_it(self):
+    self.pin.dir(m.DIR_IN)
+    res = self.pin.write(0)
+    self.assertGreater(res, 0, "The command should have returned value greater than 0")
+
+if __name__ == '__main__':
+  u.main()