add tests

Author: nioperas06

tests/test_kkiapay.py

@@ -7,13 +7,22 @@
 def setup_module(module):
     """ setup any state specific to the execution of the given module."""
 
+
 def teardown_module(module):
     """ teardown any state that was previously setup with a setup_module
     method.
     """
 
 class TestKkiapay(object):
 
+    def test_urls(self):
+        live = Kkiapay('public_key', 'private_key', 'secret')
+        sandbox = Kkiapay('public_key', 'private_key', 'secret', sandbox=True)
+
+        assert live.url == Kkiapay.BASE_URL
+        assert sandbox.url == Kkiapay.SANDBOX_URL
+
+
     def test_answer(self, requests_mock):
         pass
         # requests_mock.get("http://123-fake-api.com", text="Hello!")