#!/bin/bash
#
# Copyright 2019 The Abseil Authors.
#
# 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
#
#    https://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.

# TODO(absl-team): This script isn't fully hermetic because
# -DABSL_USE_GOOGLETEST_HEAD=ON means that this script isn't pinned to a fixed
# version of GoogleTest. This means that an upstream change to GoogleTest could
# break this test. Fix this by allowing this script to pin to a known-good
# version of GoogleTest.

set -euox pipefail

if [ -z ${ABSEIL_ROOT:-} ]; then
  ABSEIL_ROOT="$(realpath $(dirname ${0})/..)"
fi

if [ -z ${ABSL_CMAKE_CXX_STANDARDS:-} ]; then
  ABSL_CMAKE_CXX_STANDARDS="11 14 17"
fi

if [ -z ${ABSL_CMAKE_BUILD_TYPES:-} ]; then
  ABSL_CMAKE_BUILD_TYPES="Debug Release"
fi

readonly DOCKER_CONTAINER="gcr.io/google.com/absl-177019/alpine:20191016"

for std in ${ABSL_CMAKE_CXX_STANDARDS}; do
  for compilation_mode in ${ABSL_CMAKE_BUILD_TYPES}; do
    echo "--------------------------------------------------------------------"
    echo "Testing with CMAKE_BUILD_TYPE=${compilation_mode} and -std=c++${std}"

    time docker run \
      --volume="${ABSEIL_ROOT}:/abseil-cpp:ro" \
      --workdir=/abseil-cpp \
      --tmpfs=/buildfs:exec \
      --cap-add=SYS_PTRACE \
      --rm \
      -e CFLAGS="-Werror" \
      -e CXXFLAGS="-Werror" \
      "${DOCKER_CONTAINER}" \
      /bin/sh -c "
        cd /buildfs && \
        cmake /abseil-cpp \
          -DABSL_USE_GOOGLETEST_HEAD=ON \
          -DABSL_RUN_TESTS=ON \
          -DCMAKE_BUILD_TYPE=${compilation_mode} \
          -DCMAKE_CXX_STANDARD=${std} && \
        make -j$(nproc) && \
        ctest -j$(nproc) --output-on-failure"
  done
done