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tests.sh
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tests.sh
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#!/usr/bin/env bash
set -euo pipefail
output_dir="$(mktemp -d -t maptiles-tests-outputs-XXX)"
input_dir="${output_dir}/input"
mkdir "${input_dir}"
function list_dir {
pushd "${output_dir}" &> /dev/null
du -a "./${1}/" | sort -k 2
popd &> /dev/null
}
function assert_dir {
local result="$(list_dir "${1}")"
local snapshot_file="./tests/snapshots/${1}.snapshot"
if [ -f "${snapshot_file}" ]; then
if ! echo "${result}" | diff --color "${snapshot_file}" -; then
echo 'Result does not match snapshot.'
exit 1
fi
else
echo "${result}" > "${snapshot_file}"
echo "Created snapshot ${snapshot_file}"
fi
}
function assert_not_dir {
if [ -d "${output_dir}/${1}" ]; then
echo "Directory should not exist."
exit 1
fi
}
function assert_failure {
set +e
${@}
local exit_code="${?}"
set -e
if [[ "${exit_code}" == "0" ]]; then
echo 'Expected command to fail.'
exit 1
fi
}
function create_input {
local dim="${1}"
convert ./tests/original.png \
-background none \
-resize "${dim}" \
-gravity center \
-extent "${dim}" \
"${input_dir}/${dim}.png"
}
create_input 512x512
create_input 500x500
create_input 250x500
echo "RUNNING TESTS"
echo " Outputs: ${output_dir}"
echo
echo 'TEST: Generates map tiles.'
./maptiles "${input_dir}/512x512.png" "${output_dir}/basic"
assert_dir basic
echo
echo 'TEST: Squares source image.'
./maptiles "${input_dir}/250x500.png" --square "${output_dir}/square"
assert_dir square
echo
echo 'TEST: Optimises map tiles.'
./maptiles "${input_dir}/512x512.png" --optimise "lossy" "${output_dir}/optimise"
assert_dir optimise
echo
echo 'TEST: Upscales source image.'
./maptiles "${input_dir}/500x500.png" "${output_dir}/scaleup"
assert_dir scaleup
echo
echo 'TEST: Generates using given format.'
./maptiles "${input_dir}/512x512.png" --format jpg "${output_dir}/format"
assert_dir format
echo
echo 'TEST: Sets background color.'
./maptiles "${input_dir}/512x512.png" --background 'red' --format jpg "${output_dir}/background"
assert_dir background
echo
echo 'TEST: Rejects non-existing source image.'
assert_failure ./maptiles "${input_dir}/doesnotexist.png" "${output_dir}/doesnotexist"
assert_not_dir doesnotexist
echo
echo 'TEST: Rejects existing destination directory.'
mkdir "${output_dir}/exists"
assert_failure ./maptiles "${input_dir}/512x512.png" "${output_dir}/exists"
echo
echo 'TEST: Rejects non-square source image.'
assert_failure ./maptiles "${input_dir}/250x500.png" "${output_dir}/nonsquare"
assert_not_dir nonsquare
echo
echo 'TEST: Rejects missing arguments.'
assert_failure ./maptiles
echo
echo 'TEST: Rejects unknown arguments.'
assert_failure ./maptiles "${input_dir}/512x512.png" "${output_dir}/unknown" --unknown
assert_not_dir unknown
echo
echo 'All tests passed.'