Added tests for configoptions.py

tests/test_cli.py

@@ -3974,6 +3974,7 @@ def test_save_load_config():
     cwd = os.getcwd()
     # pylint: disable=not-context-manager
     with runner.isolated_filesystem():
+        # test save config file
         result = runner.invoke(
             export,
             [
@@ -3993,6 +3994,7 @@ def test_save_load_config():
         files = glob.glob("*")
         assert "config.toml" in files
 
+        # test load config file
         result = runner.invoke(
             export,
             [
@@ -4007,3 +4009,55 @@ def test_save_load_config():
         assert "Loaded options from file" in result.output
         assert "Skipped up to date XMP sidecar" in result.output
 
+        # test overwrite existing config file
+        result = runner.invoke(
+            export,
+            [
+                os.path.join(cwd, CLI_PHOTOS_DB),
+                ".",
+                "-V",
+                "--sidecar",
+                "XMP",
+                "--touch-file",
+                "--not-live",
+                "--update",
+                "--save-config",
+                "config.toml",
+            ],
+        )
+        assert result.exit_code == 0
+        assert "Saving options to file" in result.output
+        files = glob.glob("*")
+        assert "config.toml" in files
+
+        # test load config file with incompat command line option
+        result = runner.invoke(
+            export,
+            [
+                os.path.join(cwd, CLI_PHOTOS_DB),
+                ".",
+                "-V",
+                "--load-config",
+                "config.toml",
+                "--live",
+            ],
+        )
+        assert result.exit_code != 0
+        assert "Incompatible export options" in result.output
+
+        # test load config file with command line override
+        result = runner.invoke(
+            export,
+            [
+                os.path.join(cwd, CLI_PHOTOS_DB),
+                ".",
+                "-V",
+                "--load-config",
+                "config.toml",
+                "--sidecar",
+                "json",
+            ],
+        )
+        assert result.exit_code == 0
+        assert "Writing exiftool JSON sidecar" in result.output
+        assert "Writing XMP sidecar" not in result.output