added test module for the 'glossary' command

tests/test_glossary_cmd.py

@@ -0,0 +1,37 @@
+import unittest
+import argparse
+import tempfile
+from chatmastermind.configuration import Config
+from chatmastermind.commands.glossary import glossary_cmd, GlossaryCmdError
+
+
+class TestGlossaryCmd(unittest.TestCase):
+
+    def setUp(self) -> None:
+        # create DB and cache
+        self.db_dir = tempfile.TemporaryDirectory()
+        self.cache_dir = tempfile.TemporaryDirectory()
+        self.glossaries_dir = tempfile.TemporaryDirectory()
+        # create configuration
+        self.config = Config()
+        self.config.cache = self.cache_dir.name
+        self.config.db = self.db_dir.name
+        self.config.glossaries = self.glossaries_dir.name
+        # create a mock argparse.Namespace
+        self.args = argparse.Namespace(
+            create=True,
+            list=False,
+            name='new_glossary',
+            file=None,
+            source_lang='en',
+            target_lang='de',
+        )
+
+    def test_glossary_cmd_no_glossaries_err(self) -> None:
+        """
+        Test calling the glossary command without a glossaries directory.
+        """
+        self.config.glossaries = None
+        with self.assertRaises(GlossaryCmdError) as err:
+            glossary_cmd(self.args, self.config)
+            self.assertIn(str(err.exception).lower(), "glossaries directory missing")