updated tests

README.md

@@ -49,6 +49,16 @@ bluetooth, xbee, etc + associated drivers)
 For a collection of examples, see `examples.py`. This file contains methods which replicate
 the functionality of many Arduino demo sketches. 
 
+## Testing:
+The `tests` directory contains some basic tests for the library. Extensive coverage is a bit difficult, since a positive test involves actually
+connecting and issuing commands to a live Arduino, hosting any hardware
+required to test a particular function. But a core of basic communication tests
+should at least be maintained here.
+
+After installation, the tests can be run directly:
+```bash
+$ python tests/test_main.py
+```
 ## Classes
 - `Arduino(baud)` - Set up communication with currently connected and powered 
 Arduino. 

tests/test_main.py

@@ -1,13 +1,40 @@
 import unittest
+import time
 from Arduino import Arduino
 
+"""
+A collection of some basic tests for the Arduino library.
 
-class TestConnect(unittest.TestCase):
+Extensive coverage is a bit difficult, since a positive test involves actually
+connecting and issuing commands to a live Arduino, hosting any hardware
+required to test a particular function. But a core of basic communication tests
+should at least be maintained here.
+"""
+
+
+class TestBasics(unittest.TestCase):
+    _ = raw_input('Plug in Arduino board w/LED at pin 13, then press enter')
+    board = Arduino('9600')
 
     def test_find(self):
-        board = Arduino('9600')
-        self.assertIsNotNone(board.port)
+        """
+        Tests auto-connection/board detection
+        """
+        self.assertIsNotNone(self.board.port)
 
+    def test_blink(self):
+        """
+        Tests digital pin functionality
+        """
+        led_pin = 13
+        board.digitalWrite(led_pin, "LOW")
+        state = board.digitalRead(led_pin)
+        self.assertEqual(state, 0)
+        time.sleep(1)
+        board.digitalWrite(led_pin, "HIGH")
+        state = board.digitalRead(led_pin)
+        self.assertEqual(state, 1)
+        board.digitalWrite(led_pin, "LOW")
 
 if __name__ == '__main__':
     unittest.main()