Add tests for config module

tests/test_config.py

@@ -0,0 +1,53 @@
+"""
+.. author:: Eric Torres
+
+Tests for the rbackup.config module.
+"""
+import unittest
+from pathlib import Path
+from tempfile import NamedTemporaryFile
+from unittest.mock import patch
+
+import rbackup.config as config
+
+# ========== Constants ==========
+TESTING_PACKAGE = "rbackup"
+TESTING_MODULE = f"{TESTING_PACKAGE}.config"
+
+
+# ========== Tests ==========
+class TestMergeFiles(unittest.TestCase):
+    def setUp(self):
+        self.patched_path = patch(f"{TESTING_MODULE}.Path", spec_set=Path)
+        self.patched_tempfile = patch(
+            f"{TESTING_MODULE}.NamedTemporaryFile", spec_set=NamedTemporaryFile
+        )
+
+        self.mocked_path = self.patched_path.start()
+        self.mocked_tempfile = self.patched_tempfile.start()
+
+    def test_returns_path_object(self):
+        self.assertIsInstance(config.merge_files([]), Path)
+
+    def tearDown(self):
+        self.patched_path.stop()
+        self.patched_tempfile.stop()
+
+
+class TestParseConfig(unittest.TestCase):
+    def setUp(self):
+        self.patched_config_file = patch(f"{TESTING_MODULE}.MAIN_CONFIG_FILE", spec_set=Path)
+        self.patched_path = patch(f"{TESTING_MODULE}.Path", spec_set=Path)
+
+        self.mocked_config_file = self.patched_config_file.start()
+        self.mocked_path = self.patched_path.start()
+
+    def test_raises_file_not_found_error(self):
+        self.mocked_config_file.is_file.return_value = False
+
+        with self.assertRaises(FileNotFoundError):
+            config.parse_configfile()
+
+    def tearDown(self):
+        self.patched_config_file.stop()
+        self.patched_path.stop()