added simple test suite for tools/findbits.py

tools/findbits_test.py

@@ -0,0 +1,68 @@
+#!/usr/bin/python
+
+from itertools import imap
+import unittest, sys, findbits
+
+class TestFindBits(unittest.TestCase):
+	def setUp(self):
+		self.old_stdout = sys.stdout
+		sys.stdout = OutputBuffer()
+
+	def tearDown(self):
+		sys.stdout = self.old_stdout
+
+	INVERT_CASES = [
+			('10', '01'),
+			('', ''),
+			]
+	def test_invert(self):
+		self.commutative_test(findbits.invert, self.INVERT_CASES)
+
+	SEARCH_CASES = [
+			('1111', '10111101', ['Match at bit 2', '0<1111>0']),
+			('00', '10111101', ['Not found']),
+			]
+	def test_search(self):
+		for target, data, expected_fragments in self.SEARCH_CASES:
+			sys.stdout.clear_buffer()
+			findbits.search(target, data)
+			for fragment in expected_fragments:
+				self.assertIn(fragment, sys.stdout.content)
+
+	BINSTRING_CASES = [
+			(42, '101010'),
+			(1, '1'),
+			(0, ''),
+			]
+	def test_binstring(self):
+		self.unary_operation_test(findbits.binstring, self.BINSTRING_CASES)
+
+	REVERSE_CASES = [
+			('abc', 'cba'),
+			('', ''),
+			]
+	def test_stringreverse(self):
+		self.commutative_test(findbits.stringreverse, self.REVERSE_CASES)
+
+	def commutative_test(self, operation, cases):
+		self.unary_operation_test(operation, cases)
+		self.unary_operation_test(operation, imap(reversed, cases))
+
+	def unary_operation_test(self, operation, cases):
+		for case_in, case_out in cases:
+			self.assertEqual(operation(case_in), case_out)
+
+
+class OutputBuffer(object):
+	def __init__(self):
+		self.clear_buffer()
+	
+	def clear_buffer(self):
+		self.content = ''
+	
+	def write(self, data):
+		self.content += data
+
+
+if __name__ == '__main__':
+	unittest.main()