Initial Work on Reading Crystal and Creation Gaussian Input

tests/shared/system/test_atom.py

@@ -0,0 +1,19 @@
+from crystalpol.shared.system.atom import Atom
+
+import unittest
+
+
+class TestAtom(unittest.TestCase):
+    def test_atom_instantiation(self):
+        atom = Atom(
+            na=1,
+            rx=0,
+            ry=0,
+            rz=0,
+        )
+
+        self.assertIsInstance(atom, Atom)
+
+
+if __name__ == '__main__':
+    unittest.main()