third_party/blink/web_tests/webgpu/roll_webgpu_cts.sh

#!/bin/bash
# Copyright 2020 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

# This tool rolls the latest WebGPU CTS master branch into Chromium (including
# the Chromium copy of WPT, which is auto-upstreamed). It does the following:
#
#   - Fetches origin/master.
#   - Updates Chromium's DEPS to the latest commit.
#   - Runs gclient sync.
#   - Builds the CTS (requires a local installation of node/npm + yarn).
#   - Copies the built out-wpt/ directory into external/wpt/webgpu/.
#   - Adds external/wpt/webgpu/ to the git index
#     (so that it doesn't drown out other changes).
#
# It does NOT regenerate the wpt_internal/webgpu/cts.html file, which is used
# by Chromium's automated testing. Note the alert at the end of this script.

set -e

cd "$(dirname "$0")"/../../../..  # cd to [chromium]/src/

pushd third_party/webgpu-cts/src > /dev/null

  if ! git diff-index --quiet HEAD ; then
    echo 'third_party/webgpu-cts/src must be clean'
    exit 1
  fi

  git fetch origin
  hash=$(git show-ref --hash origin/master)

popd > /dev/null

echo "Rolling to ${hash}"

perl -pi -e "s:gpuweb/cts.git' \+ '\@' \+ '[0-9a-f]{40}',$:gpuweb/cts.git' + '\@' + '${hash}',:" DEPS
gclient sync

pushd third_party/webgpu-cts/src > /dev/null

  yarn install --frozen-lockfile
  npx grunt wpt  # build third_party/webgpu-cts/src/out-wpt/

popd > /dev/null

rsync -au --del --exclude='/OWNERS' \
  third_party/webgpu-cts/src/out-wpt/ \
  third_party/blink/web_tests/external/wpt/webgpu/

git add third_party/blink/web_tests/external/wpt/webgpu/

cat << EOF

********************************************************************
Roll complete!

Remember to run ./regenerate_internal_cts_html.sh.
Updates to WebGPUExpectations may be necessary to make it succeed.

Further updates to WebGPUExpectations may be needed to pass the
Chromium CQ. Note: If a small part of a large test file is failing,
consider suppressing just that part and rerunning
./regenerate_internal_cts_html.sh, which will break down the tests
into small enough chunks to allow the expectations to be applied.
********************************************************************
EOF