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Configure parallel tests with Pytest

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Configure parallel tests with Pytest - AWS CodeBuild

The following is sample of a buildspec.yml that shows parallel test execution with Pytest on an Ubuntu platform:

version: 0.2 batch: fast-fail: false build-fanout: parallelism: 5 ignore-failure: false phases: install: commands: - echo 'Installing Python dependencies' - apt-get update - apt-get install -y python3 python3-pip - pip3 install --upgrade pip - pip3 install pytest build: commands: - echo 'Running Python Tests' - | codebuild-tests-run \ --test-command 'python -m pytest' \ --files-search "codebuild-glob-search 'tests/test_*.py'" \ --sharding-strategy 'equal-distribution' post_build: commands: - echo "Test execution completed"

The following is sample of a buildspec.yml that shows parallel test execution with Pytest on an Windows platform:

version: 0.2 batch: fast-fail: false build-fanout: parallelism: 5 ignore-failure: false phases: install: commands: - echo 'Installing Python dependencies' - pip install pytest pre_build: commands: - echo 'prebuild' build: commands: - echo 'Running pytest' - | & codebuild-tests-run ` --test-command 'pytest @("$env:CODEBUILD_CURRENT_SHARD_FILES" -split \"`r?`n\")' ` --files-search "codebuild-glob-search '**/test_*.py' '**/*_test.py'" ` --sharding-strategy 'equal-distribution' post_build: commands: - echo "Test execution completed"

In above example, CODEBUILD_CURRENT_SHARD_FILES environment variable is used to fetch test files assigned to current shard and passed as array to pytest command.

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