Add validation to only download for supported domains

tests.py

@@ -0,0 +1,17 @@
+import unittest
+from validator import extractUrl, isSupportedUrl
+
+class TestUrlParser(unittest.TestCase):
+
+    def test_supportedUrl(self):
+        url = "https://vm.tiktok.com/ZSJrgyXdt/"
+        supportedResponse = isSupportedUrl(url)
+        self.assertEqual(supportedResponse["supported"], 'true')
+
+    def test_unsupportedUrl(self):
+        url = "https://www.twitch.tv/robcdee/clip/AgileLivelyCucumberPartyTime"
+        supportedResponse = isSupportedUrl(url)
+        self.assertEqual(supportedResponse["supported"], 'false')
+
+if __name__ == '__main__':
+    unittest.main()