add unit test

__init__.py

@@ -21,7 +21,7 @@
 id_img = image_proc(0, IMAGE_CREATE)
 
 def log(s):
-    print(s)
+    #print(s)
     pass
 
 def get_url(txt):

test-geturl.py

@@ -0,0 +1,30 @@
+import unittest
+#from . import __init__ as home #error
+#from . import __init__         #error
+#from . import init             #error
+#from __init__ import get_url   #error
+#from .mdimg import *           #error
+from cuda_markdown_image.__init__ import get_url
+    #if use exec(open("filename.py").read()) to execute script, import part need to use absolute path!!!
+
+
+class GetUrlTestCase(unittest.TestCase):
+    def test_get_url(self):
+        expected = r"https://octodex.github.com/images/stormtroopocat.jpg"
+        result = get_url(r'some idea ![Stormtroopocat](https://octodex.github.com/images/stormtroopocat.jpg "The Stormtroopocat") do it.')
+        self.assertEqual(result, expected)
+    def test_get_url_include_space(self):
+        expected = r"https://octodex.github.com/Ims/ca t"
+        result = get_url(r'some idea ![Stocat](https://octodex.github.com/Ims/ca t "The Storocat") do it.')
+        self.assertEqual(result, expected)
+    def test_get_url_include_backslash(self):
+        expected = r"C:\Users\Downloads\New folder\cuda_hilite"
+        result = get_url(r'some idea ![Stocat](C:\Users\Downloads\New folder\cuda_hilite "The Storocat") do it.')
+        self.assertEqual(result, expected)
+
+suite = unittest.TestSuite()
+suite.addTest(GetUrlTestCase('test_get_url'))
+suite.addTest(GetUrlTestCase('test_get_url_include_space'))
+suite.addTest(GetUrlTestCase('test_get_url_include_backslash'))
+
+unittest.TextTestRunner(verbosity=2).run(suite)