diff --git a/tests.py b/tests.py
new file mode 100644
index 0000000..f8d9d41
--- /dev/null
+++ b/tests.py
@@ -0,0 +1,26 @@
+
+
+from exrex import generate, count
+
+
+RS = {'[ab][cd]': ['ac', 'ad', 'bc', 'bd']
+     ,'[12]{1,2}': ['1', '2', '11', '12', '21', '22']
+     ,'((hai){2}|world)!': ['haihai!', 'world!']
+     ,'[ab]{1,3}': ['a', 'b', 'aa', 'ab', 'ba', 'bb', 'aaa', 'aab', 'aba', 'abb', 'baa', 'bab', 'bba', 'bbb']
+     ,'\d': map(str, range(0, 10))
+     }
+
+def gen_test():
+    for regex, result in RS.items():
+        assert list(generate(regex)) == result
+
+def count_test():
+    for regex, result in RS.items():
+        if not count(regex) == len(result):
+            print '[LENERR] "%s" - %d:%d' % (regex, count(regex), len(result))
+
+
+if __name__ == '__main__':
+    gen_test()
+    print '[!] generation test passed'
+    count_test()