Add unit test

Author: jairus-m

tests/unit/dbt_cli/test_tools.py

@@ -241,3 +241,26 @@ def mock_popen(*args, **kwargs):
     result = list_tool(selector="my_model", resource_type=["model"])
     assert "Timeout: dbt command took too long to complete" in result
     assert "Try using a specific selector to narrow down the results" in result
+
+
+@pytest.mark.parametrize("command_name", ["run", "build"])
+def test_full_refresh_flag_added_to_command(
+    monkeypatch: MonkeyPatch, mock_process, mock_fastmcp, command_name
+):
+    mock_calls = []
+
+    def mock_popen(args, **kwargs):
+        mock_calls.append(args)
+        return mock_process
+
+    monkeypatch.setattr("subprocess.Popen", mock_popen)
+
+    fastmcp, tools = mock_fastmcp
+    register_dbt_cli_tools(fastmcp, mock_dbt_cli_config)
+    tool = tools[command_name]
+
+    tool(is_full_refresh=True)
+
+    assert mock_calls
+    args_list = mock_calls[0]
+    assert "--full-refresh" in args_list