.github/workflows/ci.yml

# Copyright 2026 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.

name: Tests

on:
  # continuous runs
  schedule:
    # Run every hour
    - cron: "0 * * * *"

  # postsubmit runs
  push:
    branches:
      - master
      - lts_*

  # presubmit runs
  pull_request:
    branches:
      - master
      - lts_*

  # manual runs
  workflow_dispatch:

permissions:
  contents: read

# Avoid running twice at the same time over the same changes.
concurrency:
  group: ${{ github.event_name }}-${{ github.workflow }}-${{ github.head_ref || github.ref }}
  cancel-in-progress: ${{ contains(fromJSON('["pull_request", "workflow_dispatch", "schedule"]'), github.event_name) }}

jobs:
  # Mirrors the 10 Linux "latest" Bazel Kokoro jobs (parallelized to 1 job per
  # Bazel invocation). Not yet covered here:
  #   - "Linux GCC/libstdc++ (floor) Bazel" (requires a floor GCC Docker image)
  #   - CMake, macOS, and Windows Kokoro jobs
  linux:
    name: Linux ${{ matrix.config.name }} Bazel
    strategy:
      fail-fast: false  # Don't cancel all jobs if one fails.
      matrix:
        config:
          # linux_clang-latest_libcxx_bazel.cfg
          - name: Clang/libc++
            toolchain: clang
          # linux_clang-latest_libcxx_exceptions_bazel.cfg (fastbuild only)
          - name: Clang/libc++ -fexceptions
            toolchain: clang-exceptions
            compilation_modes: '["fastbuild"]'
          # linux_clang-latest_libcxx_alternate_options_bazel.cfg
          - name: Clang/libc++ alternate options
            toolchain: clang
            alternate_options: true
          # linux_clang-latest_libcxx_asan_bazel.cfg (fastbuild only)
          - name: Clang/libc++ ASAN
            toolchain: asan
            compilation_modes: '["fastbuild"]'
          # linux_clang-latest_libcxx_tsan_bazel.cfg (fastbuild only)
          - name: Clang/libc++ TSAN
            toolchain: tsan
            compilation_modes: '["fastbuild"]'
          # linux_clang-latest_libstdcxx_bazel.cfg
          - name: Clang/libstdc++
            toolchain: libstdc++
          # linux_gcc-latest_libstdcxx_bazel.cfg
          - name: GCC/libstdc++
            toolchain: gcc
          # linux_gcc-latest_libstdcxx_exceptions_bazel.cfg (fastbuild only)
          - name: GCC/libstdc++ -fexceptions
            toolchain: gcc-exceptions
            compilation_modes: '["fastbuild"]'
          # linux_gcc-latest_libstdcxx_alternate_options_bazel.cfg
          - name: GCC/libstdc++ alternate options
            toolchain: gcc
            alternate_options: true
          # linux_arm_clang-latest_libcxx_bazel.cfg (c++17 and c++20 only)
          - name: ARM64 Clang/libc++
            toolchain: clang-arm
            arch_suffix: -arm
            stds: '["c++17", "c++20"]'
    uses: ./.github/workflows/bazel.yml
    secrets: inherit
    with:
      os: ubuntu-24.04${{ matrix.config.arch_suffix }}
      toolchain: ${{ matrix.config.toolchain }}
      remote_config: remote${{ matrix.config.arch_suffix }}
      container_image: gcr.io/google.com/absl-177019/gloop-linux-toolchain-latest@sha256:a820c79d3f356a64db121a4ee16c4408df18f9d2c8bf6c6abfae21666ac003ba
      alternate_options: ${{ matrix.config.alternate_options || false }}
      stds: ${{ matrix.config.stds || '["c++17", "c++20", "c++23"]' }}
      compilation_modes: ${{ matrix.config.compilation_modes || '["opt", "fastbuild"]' }}

  # Provide a single predictably-named job for copybara to look for
  all-blocking-tests:
    name: All Blocking Tests
    needs: [linux]
    runs-on: ubuntu-latest
    steps:
      - name: Check for cancellations
        if: ${{ contains(join(needs.*.result, ' '), 'cancelled') }}
        run: echo "One or more tests were cancelled.  If this was a presubmit job cancelled by a submit job, you can ignore this." && exit 1
      - name: Check for failures
        if: ${{ contains(join(needs.*.result, ' '), 'failure') }}
        run: echo "One or more tests failed.  Please check the logs above and fix the issues." && exit 1
    # This workflow must run even if one or more of the dependent workflows
    # failed.
    if: always()