pagespeed/automatic/system_tests/optimize_to_webp.sh

#!/bin/bash
#
# Copyright 2016 Google Inc.
#
# 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.
start_test Optimize images to webp
function test_optimize_to_webp() {
  HTML="$TEST_ROOT/optimize_for_bandwidth/$1"
  URL="$HTML?PageSpeedFilters=$2"
  OUT=$($WGET -q -O - --header=X-PSA-Blocking-Rewrite:psatest \
    --user-agent=$3 --header=Accept:image/webp $URL)
  check_from "$OUT" grep -q "$4"
  check_from "$OUT" grep -q "$5"
}
# Most recent Chrome. Both lossless and animated WebP will be used.
test_optimize_to_webp webp_urls/rewrite_webp.html \
  "convert_to_webp_lossless,convert_to_webp_animated,recompress_png" \
  "Chrome/32." \
  "/xCuppa.png.pagespeed.ic.*.webp\"/>" \
  "/xPageSpeedAnimationSmall.gif.pagespeed.ic.*.webp\"/>"
# Less recent Chrome. Only lossless WebP will be used.
test_optimize_to_webp webp_urls/rewrite_webp.html \
  "convert_to_webp_lossless,convert_to_webp_animated,recompress_png" \
  "Chrome/31." \
  "/xCuppa.png.pagespeed.ic.*.webp\"/>" \
  "/PageSpeedAnimationSmall.gif\"/>"
# Old chrome. No WebP will be used. Single frame image will be converted to
# PNG.
test_optimize_to_webp webp_urls/rewrite_webp.html \
  "convert_to_webp_lossless,convert_to_webp_animated,recompress_png" \
  "Chrome/22." \
  "/xCuppa.png.pagespeed.ic.*.png\"/>" \
  "/PageSpeedAnimationSmall.gif\"/>"