53 lines
1.5 KiB
CMake
53 lines
1.5 KiB
CMake
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# Inputs:
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#
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# Variable | Type | Doc
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# ---------------------|----------|--------------------------------------
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# EXAMPLE_EXECUTABLE | FilePath | Path to example executable
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# FILECHECK_ENABLED | Boolean | Run FileCheck comparison test
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# FILECHECK_EXECUTABLE | FilePath | Path to the LLVM FileCheck utility
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# REFERENCE_FILE | FilePath | Path to the FileCheck reference file
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if (FILECHECK_ENABLED)
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if (NOT EXISTS "${REFERENCE_FILE}")
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message(
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FATAL_ERROR
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"FileCheck requested for '${EXAMPLE_EXECUTABLE}', but reference file "
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"does not exist at '${REFERENCE_FILE}`."
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)
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endif()
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# If the reference file is empty, validate that the example doesn't
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# produce any output.
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file(SIZE "${REFERENCE_FILE}" file_size)
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message("${REFERENCE_FILE}: ${file_size} bytes")
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if (file_size EQUAL 0)
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set(check_empty_output TRUE)
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set(filecheck_command)
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else()
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set(check_empty_output FALSE)
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set(filecheck_command COMMAND "${FILECHECK_EXECUTABLE}" "${REFERENCE_FILE}")
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endif()
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endif()
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execute_process(
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COMMAND "${EXAMPLE_EXECUTABLE}" ${filecheck_command}
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RESULT_VARIABLE exit_code
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OUTPUT_VARIABLE stdout
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ERROR_VARIABLE stderr
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)
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if (NOT 0 EQUAL exit_code)
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message(FATAL_ERROR "${EXAMPLE_EXECUTABLE} failed (${exit_code}):\n${stderr}")
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endif()
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if (check_empty_output)
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string(LENGTH "${stdout}" stdout_size)
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if (NOT stdout_size EQUAL 0)
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message(
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FATAL_ERROR
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"${EXAMPLE_EXECUTABLE}: output received, but not expected:\n${stdout}"
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)
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endif()
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endif()
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