1 files changed, 38 insertions, 0 deletions
diff --git a/tests/utils.py b/tests/utils.py
new file mode 100644
index 0000000..a78b460
--- /dev/null
+++ b/tests/utils.py
@@ -0,0 +1,38 @@
+# -*- coding: utf-8 -*-
+
+"""Helpers for testing."""
+
+import codecs
+import difflib
+import os
+import unittest
+from StringIO import StringIO
+
+NL = '\n'
+DIR_PATH = os.path.abspath(os.path.dirname(__file__))
+PARENT_DIR = os.path.dirname(DIR_PATH)
+FILES_DIR = os.path.join(DIR_PATH, 'files')
+
+
+def load_file(filename, encoding='utf-8'):
+    """Opens filename with encoding and return it's contents."""
+    f = codecs.open(os.path.join(FILES_DIR, filename), 'r', encoding)
+    data = f.read()
+    f.close()
+    return data
+
+
+class TestCaseBase(unittest.TestCase):
+    """Base class for test cases with some additional checks."""
+
+    # Adopted from Python's tests.
+    def ndiffAssertEqual(self, first, second):
+        """Like failUnlessEqual except use ndiff for readable output."""
+        if first <> second:
+            sfirst = unicode(first)
+            ssecond = unicode(second)
+            diff = difflib.ndiff(sfirst.splitlines(), ssecond.splitlines())
+            fp = StringIO()
+            print >> fp, NL, NL.join(diff)
+            print fp.getvalue()
+            raise self.failureException, fp.getvalue()