Fix oscillating autoupdate output for empty source files. #5
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| # Part of the Carbon Language project, under the Apache License v2.0 with LLVM | |
| # Exceptions. See /LICENSE for license information. | |
| # SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception | |
| name: test | |
| on: | |
| push: | |
| branches: [trunk] | |
| pull_request_target: | |
| merge_group: | |
| # Cancel previous workflows on the PR when there are multiple fast commits. | |
| # https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#concurrency | |
| concurrency: | |
| group: ${{ github.workflow }}-${{ github.head_ref || github.ref }} | |
| cancel-in-progress: true | |
| jobs: | |
| test: | |
| strategy: | |
| matrix: | |
| # At present, these images are newer than "latest". We use them to test | |
| # against more recent tooling versions. | |
| # https://github.com/actions/runner-images | |
| os: [ubuntu-22.04, macos-12] | |
| build_mode: [fastbuild, opt] | |
| runs-on: ${{ matrix.os }} | |
| steps: | |
| # Ubuntu images start with 23GB available, and this adds 14GB more. For | |
| # comparison, MacOS images have >100GB free. | |
| - name: Free up disk space (Ubuntu) | |
| if: matrix.os == 'ubuntu-22.04' | |
| uses: jlumbroso/free-disk-space@v1.2.0 | |
| with: | |
| android: true | |
| dotnet: true | |
| haskell: true | |
| # Although we could delete more, if we run into a limit, it provides a | |
| # little flexibility to get space while trying to shrink the build. | |
| # There's also support for docker images at head (1.2.0 is still | |
| # the latest release). | |
| large-packages: false | |
| swap-storage: false | |
| # Checkout the pull request head or the branch. | |
| - name: Checkout pull request | |
| if: github.event_name == 'pull_request_target' | |
| uses: actions/checkout@v3 | |
| with: | |
| ref: ${{ github.event.pull_request.head.sha }} | |
| - name: Checkout branch | |
| if: github.event_name != 'pull_request_target' | |
| uses: actions/checkout@v3 | |
| # Tests should only run on applicable paths, but we still need to have an | |
| # action run for the merge queue. We filter steps based on the paths here, | |
| # and condition steps on the output. | |
| - id: filter | |
| uses: dorny/paths-filter@v2 | |
| with: | |
| filters: | | |
| ignore: | |
| - '**/*.md' | |
| - 'LICENSE' | |
| - 'CODEOWNERS' | |
| - '.git*' | |
| # Setup Python and related tools. | |
| - uses: actions/setup-python@v4 | |
| if: steps.filter.outputs.ignore == 'false' | |
| with: | |
| # Match the min version listed in docs/project/contribution_tools.md | |
| python-version: '3.9' | |
| # Use LLVM following: | |
| # https://github.com/actions/runner-images/blob/main/images/macos/macos-12-Readme.md | |
| # Both 14 and 15 are candidates because GitHub is testing new images. | |
| - name: Setup LLVM and Clang (macOS) | |
| if: steps.filter.outputs.ignore == 'false' && matrix.os == 'macos-12' | |
| run: | | |
| LLVM_PATH="$(brew --prefix llvm@15)" | |
| if [[ ! -e "${LLVM_PATH}" ]]; then | |
| LLVM_PATH="$(brew --prefix llvm@14)" | |
| fi | |
| echo "Using ${LLVM_PATH}" | |
| echo "${LLVM_PATH}/bin" >> $GITHUB_PATH | |
| echo '*** ls "${LLVM_PATH}"' | |
| ls "${LLVM_PATH}" | |
| echo '*** ls "${LLVM_PATH}/bin"' | |
| ls "${LLVM_PATH}/bin" | |
| # Use LLVM following: | |
| # https://github.com/actions/runner-images/blob/main/images/linux/Ubuntu2204-Readme.md | |
| # Both 14 and 15 are candidates for forwards compatibility, although 15 | |
| # isn't provided. | |
| - name: Setup LLVM and Clang (Ubuntu) | |
| if: | |
| steps.filter.outputs.ignore == 'false' && matrix.os == 'ubuntu-22.04' | |
| run: | | |
| LLVM_PATH="/usr/lib/llvm-15" | |
| if [[ ! -e "${LLVM_PATH}" ]]; then | |
| LLVM_PATH="/usr/lib/llvm-14" | |
| fi | |
| echo "Using ${LLVM_PATH}" | |
| echo "${LLVM_PATH}/bin" >> $GITHUB_PATH | |
| echo '*** ls "${LLVM_PATH}"' | |
| ls "${LLVM_PATH}" | |
| echo '*** ls "${LLVM_PATH}/bin"' | |
| ls "${LLVM_PATH}/bin" | |
| # Print the various tool paths and versions to help in debugging. | |
| - name: Print tool debugging info | |
| if: steps.filter.outputs.ignore == 'false' | |
| run: | | |
| echo '*** PATH' | |
| echo $PATH | |
| echo '*** bazelisk' | |
| which bazelisk | |
| bazelisk --version | |
| echo '*** python' | |
| which python | |
| python --version | |
| echo '*** clang' | |
| which clang | |
| clang --version | |
| echo '*** clang++' | |
| which clang++ | |
| clang++ --version | |
| # Extract our access key for our build cache. | |
| - name: Extract access key | |
| if: steps.filter.outputs.ignore == 'false' | |
| env: | |
| GCP_BUILDS_SERVICE_ACCOUNT: ${{ secrets.GCP_BUILDS_SERVICE_ACCOUNT }} | |
| run: | | |
| echo "$GCP_BUILDS_SERVICE_ACCOUNT" \ | |
| | base64 -d > $HOME/gcp-builds-service-account.json | |
| # We need to replace the `.` with a `_` for the build cache. | |
| - name: Setup LLVM and Clang (macOS) | |
| if: steps.filter.outputs.ignore == 'false' && matrix.os == 'macos-12' | |
| run: | | |
| echo "os_for_cache=macos-12" >> $GITHUB_ENV | |
| - name: Setup LLVM and Clang (Ubuntu) | |
| if: | |
| steps.filter.outputs.ignore == 'false' && matrix.os == 'ubuntu-22.04' | |
| run: | | |
| echo "os_for_cache=ubuntu-22_04" >> $GITHUB_ENV | |
| # Add our bazel configuration and print basic info to ease debugging. | |
| - name: Configure Bazel and print info | |
| if: steps.filter.outputs.ignore == 'false' | |
| env: | |
| # Add a cache version for changes that bazel won't otherwise detect, | |
| # like llvm version changes. | |
| CACHE_VERSION: 1 | |
| run: | | |
| cat >user.bazelrc <<EOF | |
| # Enable remote cache for our CI but minimize downloads. | |
| build --remote_cache=https://storage.googleapis.com/carbon-builds-github-v${CACHE_VERSION}-${{ env.os_for_cache }} | |
| build --google_credentials=$HOME/gcp-builds-service-account.json | |
| build --remote_download_minimal | |
| # Set an artificially high jobs count. This flag controls the number | |
| # of concurrency Bazel itself uses, which is essential for actions | |
| # that are internally blocked on for example downloading results form | |
| # the cache above. Without setting this high, Bazel will pick a small | |
| # number based on the available host CPUs and the reality will be a | |
| # long chain of largely serialized download events with little or no | |
| # usage of the host machine. Fortunately, local actions are | |
| # *separately* gated on `--local_*_resources` that will avoid a large | |
| # jobs value overwhelming the host. There is a bug to make downloads | |
| # behave completely asynchronously and remove the need for this filed | |
| # back in 2018 but work seemed to not finish: | |
| # https://github.com/bazelbuild/bazel/issues/6394 | |
| # | |
| # There is a new effort (yay!) but until then it seems worth using the | |
| # workaround of a high jobs value. The biggest downside (increased | |
| # heap usage) seems like it isn't currently a big loss for our builds. | |
| build --jobs=200 | |
| # Set an artificially high jobs count. This flag controls the number | |
| # of concurrency Bazel itself uses, which is essential for actions | |
| # that are internally blocked on for example downloading results form | |
| # the cache above. Without setting this high, Bazel will pick a small | |
| # number based on the available host CPUs and the reality will be a | |
| # long chain of largely serialized download events with little or no | |
| # usage of the host machine. Fortunately, local actions are | |
| # *separately* gated on `--local_*_resources` that will avoid a large | |
| # jobs value overwhelming the host. There is a bug to make downloads | |
| # behave completely asynchronously and remove the need for this filed | |
| # back in 2018 but work seemed to not finish: | |
| # https://github.com/bazelbuild/bazel/issues/6394 | |
| # | |
| # There is a new effort (yay!) but until then it seems worth using the | |
| # workaround of a high jobs value. The biggest downside (increased | |
| # heap usage) seems like it isn't currently a big loss for our builds. | |
| build --jobs=200 | |
| # General build options. | |
| build --verbose_failures | |
| test --test_output=errors | |
| EOF | |
| bazelisk info | |
| # Just for visibility, print space before and after the build. | |
| - name: Disk space before build | |
| if: steps.filter.outputs.ignore == 'false' | |
| run: df -h | |
| # Build and run all targets on branch pushes to ensure we always have a | |
| # clean tree. We don't expect this to be an interactive path and so don't | |
| # optimize the latency of this step. | |
| - name: Test (${{ matrix.build_mode }}) | |
| if: | |
| steps.filter.outputs.ignore == 'false' && github.event_name == 'push' | |
| env: | |
| # 'libtool_check_unique failed to generate' workaround. | |
| # https://github.com/bazelbuild/bazel/issues/14113#issuecomment-999794586 | |
| BAZEL_USE_CPP_ONLY_TOOLCHAIN: 1 | |
| run: | | |
| bazelisk test -c ${{ matrix.build_mode }} //... | |
| # Compute the set of possible rules impacted by this change using | |
| # Bazel-based diffing. This lets PRs and the merge queue have a much more | |
| # efficient test CI action by avoiding even enumerating (and downloading) | |
| # all of the unaffected Bazel targets. | |
| - name: Compute impacted pull request targets | |
| if: | |
| steps.filter.outputs.ignore == 'false' && github.event_name != 'push' | |
| env: | |
| # Compute the base SHA from the different event structures. | |
| GIT_BASE_SHA: | |
| ${{ github.event_name == 'pull_request_target' && | |
| github.event.pull_request.base.sha || | |
| github.event.merge_group.base_sha }} | |
| TARGETS_FILE: ${{ runner.temp }}/targets | |
| run: | | |
| # First fetch the relevant base into the git repository. | |
| git fetch --depth=1 origin $GIT_BASE_SHA | |
| # Then use `target-determinator` as wrapped by our script. | |
| ./scripts/target_determinator.py $GIT_BASE_SHA >$TARGETS_FILE | |
| # Build and run just the tests impacted by the PR or merge group. | |
| - name: Test (${{ matrix.build_mode }}) | |
| if: | |
| steps.filter.outputs.ignore == 'false' && github.event_name != 'push' | |
| env: | |
| # 'libtool_check_unique failed to generate' workaround. | |
| # https://github.com/bazelbuild/bazel/issues/14113#issuecomment-999794586 | |
| BAZEL_USE_CPP_ONLY_TOOLCHAIN: 1 | |
| TARGETS_FILE: ${{ runner.temp }}/targets | |
| run: | | |
| # Bazel requires a test target to run the test command. There may be | |
| # no targets or there may only be non-test targets that we want to | |
| # build, so simply inject an explicit no-op test target. | |
| echo "//scripts:no_op_test" >> $TARGETS_FILE | |
| bazelisk test -c ${{ matrix.build_mode }} \ | |
| --target_pattern_file=$TARGETS_FILE | |
| # See "Disk space before build". | |
| - name: Disk space after build | |
| if: steps.filter.outputs.ignore == 'false' | |
| run: df -h |