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#!/bin/bash
# SPDX-License-Identifier: GPL-2.0-or-later
command -v convert >/dev/null 2>&1 || { echo >&2 "I require ImageMagick's 'convert' but it's not installed. Aborting."; exit 1; }
command -v compare >/dev/null 2>&1 || { echo >&2 "I require ImageMagick's 'compare' but it's not installed. Aborting."; exit 1; }
OUTPUT_FILENAME=$1
REFERENCE_FILENAME=$2
EXPECTED_FILES=$3
TEST_SCRIPT=$4
# check if expected files exist
for file in ${EXPECTED_FILES}; do
test -f "${file}" || { echo "Error: Expected file '${file}' not found."; exit 1; }
done
# if reference file is given check if input files exist and continue with comparison
if [ -n "${REFERENCE_FILENAME}" ]; then
if [ ! -f "${OUTPUT_FILENAME}" ]; then
echo "Error: Test file '${OUTPUT_FILENAME}' not found."
exit 1
fi
if [ ! -f "${REFERENCE_FILENAME}" ]; then
echo "Error: Reference file '${REFERENCE_FILENAME}' not found."
exit 1
fi
# convert testfile and reference file to PNG format
# - use internal MSVG delegate in SVG conversions for reproducibility reasons (avoid inkscape or rsvg delegates)
[ "${OUTPUT_FILENAME##*.}" = "svg" ] && delegate1=MSVG:
[ "${REFERENCE_FILENAME##*.}" = "svg" ] && delegate2=MSVG:
if ! convert ${delegate1}${OUTPUT_FILENAME} ${OUTPUT_FILENAME}.png; then
echo "Warning: Failed to convert test file '${OUTPUT_FILENAME}' to PNG format. Skipping comparison test."
exit 42
fi
if ! convert ${delegate2}${REFERENCE_FILENAME} ${OUTPUT_FILENAME}_reference.png; then
echo "Warning: Failed to convert reference file '${REFERENCE_FILENAME}' to PNG format. Skipping comparison test."
exit 42
fi
# compare files
if ! compare -metric AE ${OUTPUT_FILENAME}.png ${OUTPUT_FILENAME}_reference.png ${OUTPUT_FILENAME}_compare.png; then
echo && echo "Error: Comparison failed."
exit 1
fi
fi
# if additional test file is specified, check existence and execute the command
if [ -n "${TEST_SCRIPT}" ]; then
script=${TEST_SCRIPT%%;*}
arguments=${TEST_SCRIPT#*;}
IFS_OLD=$IFS IFS=';' arguments_array=($arguments) IFS=$IFS_OLD
if [ ! -f "${script}" ]; then
echo "Error: Additional test script file '${script}' not found."
exit 1
fi
case ${script} in
*.py)
interpreter=python3
;;
*)
interpreter=sh
;;
esac
if ! $interpreter ${script} "${arguments_array[@]}"; then
echo "Error: Additional test script failed."
echo "Full call: $interpreter ${script} $(printf "\"%s\" " "${arguments_array[@]}")"
exit 1
fi
fi
# cleanup
for file in ${OUTPUT_FILENAME}{,.png,_reference.png,_compare.png} ${EXPECTED_FILES}; do
rm -f ${file}
done
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