Added unit test for the 'generate_route_manifest' CLI

Author: tieneupin

tests/cli/test_generate_route_manifest_cli.py

@@ -0,0 +1,26 @@
+import sys
+
+from pytest_mock import MockerFixture
+
+from murfey.cli.generate_route_manifest import run
+
+
+def test_run(
+    mocker: MockerFixture,
+):
+    # Mock out print() and exit()
+    mock_print = mocker.patch("builtins.print")
+    mock_exit = mocker.patch("builtins.exit")
+
+    # Run the function with its args
+    sys.argv = ["--debug"]
+    run()
+
+    # Check that the final print message and exit() are called
+    print_calls = mock_print.call_args_list
+    last_print_call = print_calls[-1]
+    last_printed = last_print_call.args[0]
+    assert last_printed.startswith(
+        "Route manifest for instrument and backend servers saved to"
+    )
+    mock_exit.assert_called_once()