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# Read the JSON `filename` into `outvar`.
function(read_json filename outvar)
file(READ "${filename}" ${outvar})
return(PROPAGATE ${outvar})
endfunction()
# Utility for error messages.
function(add_error error)
string(APPEND RunCMake_TEST_FAILED " ${error}\n")
string(APPEND ERROR_MESSAGE " ${error}\n")
return(PROPAGATE RunCMake_TEST_FAILED ERROR_MESSAGE)
endfunction()
# Utility for JSON-specific error messages.
function(json_error file error)
add_error("Error in JSON file ${file}:\n${error}")
return(PROPAGATE RunCMake_TEST_FAILED ERROR_MESSAGE)
endfunction()
# Check if the JSON string `json` has `key` when it's not
# UNEXPECTED. If so, return it in `key`.
function(json_has_key file json key)
cmake_parse_arguments(ARG "UNEXPECTED" "" "" ${ARGN})
unset(missingKey)
string(JSON ${key} ERROR_VARIABLE missingKey GET "${json}" ${key})
if (NOT ARG_UNEXPECTED AND NOT missingKey MATCHES NOTFOUND)
json_error("${file}" "Missing key \'${key}\':\n${json}")
elseif (ARG_UNEXPECTED AND missingKey MATCHES NOTFOUND)
json_error("${file}" "\nUnexpected key \'${key}\':\n${json}")
endif()
return(PROPAGATE RunCMake_TEST_FAILED ERROR_MESSAGE ${key})
endfunction()
# Check if the JSON string `json` does not have `key`.
function(json_missing_key file json key)
string(JSON data ERROR_VARIABLE missingKey GET "${json}" ${key})
if (missingKey MATCHES NOTFOUND)
json_error("${file}" "Has unexpected ${key}.")
endif()
return(PROPAGATE RunCMake_TEST_FAILED ERROR_MESSAGE)
endfunction()
# Check if the JSON string `json` has `key` and its value matches `expected`.
function(json_assert_key file json key expected)
string(JSON data ERROR_VARIABLE missingKey GET "${json}" ${key})
if (NOT missingKey MATCHES NOTFOUND)
json_error("${file}" "Missing ${key}.")
endif()
if (NOT ${data} MATCHES ${expected})
json_error(
"${file}"
"Unexpected data in custom content file:\nGot ${data}, Expected ${expected}."
)
endif()
return(PROPAGATE RunCMake_TEST_FAILED ERROR_MESSAGE)
endfunction()
# Check if the two given JSON files are equal.
function(json_equals expected_file actual_file)
read_json("${expected_file}" expected_contents)
read_json("${actual_file}" actual_contents)
string(JSON equal EQUAL ${expected_contents} ${actual_contents})
if (NOT equal)
add_error(
"JSON ${expected_file} does not equal ${actual_file}."
)
endif()
return(PROPAGATE RunCMake_TEST_FAILED ERROR_MESSAGE)
endfunction()
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