Add version_pins tests

tests/test_version_pins.py

@@ -0,0 +1,23 @@
+# -*- coding: utf-8 -*-
+
+"""Tests for PyOBO VERSION_PINS."""
+
+import unittest
+
+from pyobo.api.utils import get_version
+from pyobo.constants import VERSION_PINS
+
+
+class TestVersionPins(unittest.TestCase):
+    """Test using VERSION_PINS."""
+
+    def test_correct_version_pin_types(self):
+        """Test resource and version type."""
+        for resource_prefix, version in VERSION_PINS.items():
+            self.assertIsInstance(resource_prefix, str)
+            self.assertIsInstance(version, str)
+
+    def test_use_correct_version_pin(self):
+        """Tests correct resource version is used."""
+        for resource_prefix, version in VERSION_PINS.items():
+            self.assertEqual(get_version(resource_prefix), version)