Expose app document routing in pano cli

tests/cmake/expect_pano_cli_classify_open_failure.cmake

@@ -0,0 +1,27 @@
+if(NOT DEFINED PANO_CLI)
+    message(FATAL_ERROR "PANO_CLI is required")
+endif()
+
+if(NOT DEFINED OPEN_PATH)
+    message(FATAL_ERROR "OPEN_PATH is required")
+endif()
+
+if(NOT DEFINED EXPECTED_OUTPUT)
+    message(FATAL_ERROR "EXPECTED_OUTPUT is required")
+endif()
+
+execute_process(
+    COMMAND "${PANO_CLI}" classify-open --path "${OPEN_PATH}"
+    RESULT_VARIABLE result
+    OUTPUT_VARIABLE output
+    ERROR_VARIABLE error)
+
+if(result EQUAL 0)
+    message(FATAL_ERROR "pano_cli classify-open unexpectedly succeeded: ${output}${error}")
+endif()
+
+string(FIND "${output}${error}" "${EXPECTED_OUTPUT}" found_at)
+if(found_at EQUAL -1)
+    message(FATAL_ERROR
+        "pano_cli classify-open failure output did not contain expected text.\nExpected: ${EXPECTED_OUTPUT}\nOutput: ${output}${error}")
+endif()