tests/test_io_pnm.sh

#!/bin/bash
# Copyright 2020 Google LLC
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

# tests for image formats I/O

set -ex

if [[ "$#" -ge 1 ]]; then
  # eval so that the passed in directory can contain variables.
  BINARY_DIR="$(eval echo "$1")"
else
  # assume "tests" is the current directory
  BINARY_DIR=..
fi
if [[ "$#" -ge 2 ]]; then
  TESTDATA_DIR="$(eval echo "$2")"
else
  TESTDATA_DIR=./testdata
fi
TESTDATA_DIR="${TESTDATA_DIR}/specific"

CWP2="${BINARY_DIR}/cwp2"
GET_DISTO="${BINARY_DIR}/get_disto"

TMP_WP2=/tmp/test_io_pnm.wp2

# check exotic PNM files
do_check_psnr() {
  file="$1"
  shift
  min_psnr="$1"
  shift
  "${GET_DISTO}" -min "${min_psnr}" "${TMP_WP2}" "${TESTDATA_DIR}/${file}" "$@"
}

for v in 37 255 1001 65535; do
  min_psnr=41 # low quality only for max_value = 37
  if [[ "x${v}" != "x37" ]]; then
    min_psnr=99
  fi
  opt=("-q" 100 "-quiet")

  "${CWP2}" "${TESTDATA_DIR}/bug449_${v}.pgm" "${opt[@]}" -o "${TMP_WP2}"
  do_check_psnr bug449_ref_gray.png "${min_psnr}"

  "${CWP2}" "${TESTDATA_DIR}/bug449_${v}_g.pam" "${opt[@]}" -o "${TMP_WP2}"
  do_check_psnr bug449_ref_gray_alpha.png "${min_psnr}"

  "${CWP2}" "${TESTDATA_DIR}/bug449_${v}.ppm" "${opt[@]}" -o "${TMP_WP2}"
  do_check_psnr bug449_ref_noalpha.png "${min_psnr}"

  "${CWP2}" "${TESTDATA_DIR}/bug449_${v}.pam" "${opt[@]}" -o "${TMP_WP2}"
  do_check_psnr bug449_ref.png "${min_psnr}"
done

echo "ALL OK"
exit 0