Add test cases for alphanum sort

diff --git a/htsworkflow/util/test/test_alphanum.py b/htsworkflow/util/test/test_alphanum.py
new file mode 100644 (file)
index 0000000..bfb2eda
--- /dev/null
+++ b/htsworkflow/util/test/test_alphanum.py
@@ -0,0 +1,39 @@
+import copy
+import os
+import unittest
+
+from htsworkflow.util.alphanum import alphanum
+
+class testAlphanum(unittest.TestCase):
+    def test_string(self):
+      unsorted = ['z5', 'b3', 'b10', 'a001', 'a2']
+      sorted = [ 'a001', 'a2', 'b3', 'b10', 'z5']
+      scratch = copy.copy(unsorted)
+      scratch.sort(alphanum)
+
+      for i in xrange(len(scratch)):
+        self.failIfEqual(scratch[i], unsorted[i])
+      for i in xrange(len(scratch)):
+        self.failUnlessEqual(scratch[i], sorted[i])
+
+    def test_numbers(self):
+      unsorted = [5,7,10,18,-1,3]
+      sorted = [-1,3,5,7,10,18]
+      scratch = copy.copy(unsorted)
+      scratch.sort(alphanum)
+
+      for i in xrange(len(scratch)):
+        self.failIfEqual(scratch[i], unsorted[i])
+      for i in xrange(len(scratch)):
+        self.failUnlessEqual(scratch[i], sorted[i])
+
+
+def suite():
+    return unittest.makeSuite(testAlphanum, 'test')
+
+if __name__ == "__main__":
+    unittest.main(defaultTest='suite')
+
+
+
+