| # run-and-compare.cmake -- Runs a command and compares its output to an expected value |
| |
| # Copyright (C) 2021 Nathan Moinvaziri |
| # Licensed under the Zlib license, see LICENSE.md for details |
| |
| # Required Variables |
| # COMMAND - Command to run |
| # OUTPUT - Standard output |
| # COMPARE - String to compare output against |
| |
| # Optional Variables |
| # INPUT - Standard input |
| # IGNORE_LINE_ENDINGS - Ignore line endings when comparing output |
| |
| if(NOT DEFINED OUTPUT OR NOT DEFINED COMPARE OR NOT DEFINED COMMAND) |
| message(FATAL_ERROR "Run and compare arguments missing") |
| endif() |
| |
| # Ensure directory exists for output files |
| get_filename_component(OUTPUT_DIR "${OUTPUT}" DIRECTORY) |
| file(MAKE_DIRECTORY "${OUTPUT_DIR}") |
| |
| if(INPUT) |
| # Run command with stdin input and redirect stdout to output |
| execute_process(COMMAND ${CMAKE_COMMAND} |
| "-DCOMMAND=${COMMAND}" |
| -DINPUT=${INPUT} |
| -DOUTPUT=${OUTPUT} |
| "-DSUCCESS_EXIT=${SUCCESS_EXIT}" |
| -P ${CMAKE_CURRENT_LIST_DIR}/run-and-redirect.cmake |
| RESULT_VARIABLE CMD_RESULT) |
| else() |
| # Run command and redirect stdout to output |
| execute_process(COMMAND ${CMAKE_COMMAND} |
| "-DCOMMAND=${COMMAND}" |
| -DOUTPUT=${OUTPUT} |
| "-DSUCCESS_EXIT=${SUCCESS_EXIT}" |
| -P ${CMAKE_CURRENT_LIST_DIR}/run-and-redirect.cmake |
| RESULT_VARIABLE CMD_RESULT) |
| endif() |
| |
| if(CMD_RESULT) |
| message(FATAL_ERROR "Run before compare failed: ${CMD_RESULT}") |
| endif() |
| |
| # Use configure_file to normalize line-endings |
| if(IGNORE_LINE_ENDINGS) |
| # Rewrite files with normalized line endings to temporary directory |
| get_filename_component(COMPARE_NAME ${COMPARE} NAME) |
| set(COMPARE_TEMP ${CMAKE_CURRENT_BINARY_DIR}/Testing/Temporary/${COMPARE_NAME}.cmp) |
| configure_file(${COMPARE} ${COMPARE_TEMP} NEWLINE_STYLE LF) |
| set(COMPARE ${COMPARE_TEMP}) |
| |
| get_filename_component(OUTPUT_NAME ${OUTPUT} NAME) |
| set(OUTPUT_TEMP ${CMAKE_CURRENT_BINARY_DIR}/Testing/Temporary/${OUTPUT_NAME}.cmp) |
| configure_file(${OUTPUT} ${OUTPUT_TEMP} NEWLINE_STYLE LF) |
| set(OUTPUT ${OUTPUT_TEMP}) |
| endif() |
| |
| # Compare that output is equal to specified file |
| execute_process(COMMAND ${CMAKE_COMMAND} |
| -E compare_files ${COMPARE} ${OUTPUT} |
| RESULT_VARIABLE CMD_RESULT) |
| |
| # Delete temporary files used to normalize line-endings |
| if(IGNORE_LINE_ENDINGS) |
| file(REMOVE ${COMPARE} ${OUTPUT}) |
| endif() |
| |
| if(CMD_RESULT) |
| message(FATAL_ERROR "Run compare failed: ${CMD_RESULT}") |
| endif() |