Plan new document creation in app core

tests/cmake/expect_pano_cli_plan_new_document_failure.cmake

@@ -0,0 +1,26 @@
+if(NOT DEFINED PANO_CLI)
+    message(FATAL_ERROR "PANO_CLI is required")
+endif()
+
+if(NOT DEFINED EXPECTED_OUTPUT)
+    message(FATAL_ERROR "EXPECTED_OUTPUT is required")
+endif()
+
+execute_process(
+    COMMAND "${PANO_CLI}" plan-new-document
+        --work-dir D:/Paint
+        --name demo
+        --resolution-index 99
+    RESULT_VARIABLE result
+    OUTPUT_VARIABLE output
+    ERROR_VARIABLE error)
+
+if(result EQUAL 0)
+    message(FATAL_ERROR "pano_cli plan-new-document unexpectedly succeeded: ${output}${error}")
+endif()
+
+string(FIND "${output}${error}" "${EXPECTED_OUTPUT}" found_at)
+if(found_at EQUAL -1)
+    message(FATAL_ERROR
+        "pano_cli plan-new-document failure output did not contain expected text.\nExpected: ${EXPECTED_OUTPUT}\nOutput: ${output}${error}")
+endif()