Unittest for HAMAP retriever hamap.py

tests/test_hamap.py

+#!/usr/bin/env python3
+
+import unittest
+from dbxref.retrieve import hamap
+
+
+class TestHAMAP(unittest.TestCase):
+
+    def test_output(self):
+        """test if HAMAP retriever gives any output, ergo functions in any way"""
+        documents = hamap.retrieve({"db": "HAMAP", "id": "HM:MF_00607"}, matrix=True)
+
+        self.assertTrue(documents)
+
+
+if __name__ == "__main__":
+    unittest.main()