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test: Add single-parser test optimization to CI (#1148)
## Summary - Detects when PR changes are isolated to a single parser directory - Runs only that parser's tests instead of the full test suite - Provides 10-30x speedup for ~30% of PRs (single-parser changes) ## Changes - Added `detect-changes` job using `dorny/paths-filter` to analyze file changes - Modified test jobs to conditionally run either single-parser or all tests - Conservative approach: falls back to full test suite when: - Changes touch multiple parsers - Changes are in shared utilities or core code - Changes are outside parser directories ## Test plan - [x] CI passes with these workflow changes - [x] Verify single-parser detection works correctly - [x] Confirm fallback to full tests for multi-parser or shared code changes ## Impact Based on analysis: - ~30% of PRs modify only a single parser - Single parser tests run in 4-41 seconds vs 5-10 minutes for full suite - Expected CI time reduction of 10-30x for qualifying PRs 🤖 Generated with [Claude Code](https://claude.com/claude-code) --------- Co-authored-by: Claude Opus 4.1 <noreply@anthropic.com>
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‎.github/workflows/test.yml‎

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@@ -13,16 +13,28 @@ permissions:
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jobs:
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# Determine which tests to run based on changed files
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changes:
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detect-changes:
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runs-on: ubuntu-latest
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outputs:
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single-parser: ${{ steps.detect-parser.outputs.parser }}
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run-all-tests: ${{ steps.detect-parser.outputs.run-all }}
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schema-generation: ${{ steps.filter.outputs.schema-generation }}
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steps:
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- uses: actions/checkout@v4
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- uses: dorny/paths-filter@v3
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id: filter
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with:
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list-files: json
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filters: |
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parsers:
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- 'src/allotropy/parsers/**'
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- 'tests/parsers/**'
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non-parser:
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- 'src/allotropy/!(parsers)/**'
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- 'tests/!(parsers)/**'
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- 'pyproject.toml'
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- 'scripts/**'
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- '.github/**'
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schema-generation:
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- 'src/allotropy/allotrope/schemas/**'
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- 'src/allotropy/allotrope/schema_parser/**'
@@ -33,7 +45,52 @@ jobs:
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- 'scripts/download_schema.py'
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- 'tests/allotrope/schema_parser/**'
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- 'pyproject.toml'
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- name: Detect single parser changes
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id: detect-parser
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run: |
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if [[ "${{ steps.filter.outputs.non-parser }}" == "true" ]]; then
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echo "Changes detected outside parsers, running all tests"
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echo "run-all=true" >> $GITHUB_OUTPUT
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echo "parser=" >> $GITHUB_OUTPUT
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elif [[ "${{ steps.filter.outputs.parsers }}" == "true" ]]; then
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# Get list of changed files in parsers directory
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FILES=$(echo '${{ steps.filter.outputs.parsers_files }}' | jq -r '.[]')
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# Extract unique parser directories from both src and tests
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SRC_PARSERS=$(echo "$FILES" | grep '^src/allotropy/parsers/' | cut -d'/' -f4 | grep -v '^utils$' | grep -v '^__pycache__$')
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TEST_PARSERS=$(echo "$FILES" | grep '^tests/parsers/' | cut -d'/' -f3 | grep -v '^__pycache__$')
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# Combine and get unique parsers
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ALL_PARSERS=$(echo -e "$SRC_PARSERS\n$TEST_PARSERS" | sort -u | grep -v '^$')
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# Count unique parsers
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PARSER_COUNT=$(echo "$ALL_PARSERS" | grep -v '^$' | wc -l)
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if [[ $PARSER_COUNT -eq 1 ]]; then
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PARSER=$(echo "$ALL_PARSERS" | head -n1)
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# Check if it's actually a parser directory (not utils, shared, etc)
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if [[ "$PARSER" != "utils" && "$PARSER" != "__pycache__" && -d "tests/parsers/$PARSER" ]]; then
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echo "Single parser detected: $PARSER"
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echo "run-all=false" >> $GITHUB_OUTPUT
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echo "parser=$PARSER" >> $GITHUB_OUTPUT
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else
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echo "Changes in shared parser utilities, running all tests"
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echo "run-all=true" >> $GITHUB_OUTPUT
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echo "parser=" >> $GITHUB_OUTPUT
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fi
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else
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echo "Multiple parsers changed, running all tests"
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echo "run-all=true" >> $GITHUB_OUTPUT
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echo "parser=" >> $GITHUB_OUTPUT
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fi
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else
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echo "No parser changes detected, running all tests"
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echo "run-all=true" >> $GITHUB_OUTPUT
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echo "parser=" >> $GITHUB_OUTPUT
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fi
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test_py_310:
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needs: detect-changes
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runs-on: ubuntu-latest
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name: Tests (python 3.10)
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- name: Install click
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run: pip install click!=8.3.0
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- name: Run Tests (excluding schema generation)
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run: hatch run test_all.py3.10:pytest -n 2 tests --ignore=tests/allotrope/schema_parser/generate_schemas_test.py
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timeout-minutes: 10
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run: |
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if [[ "${{ needs.detect-changes.outputs.run-all }}" == "true" ]]; then
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echo "Running all tests"
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hatch run test_all.py3.10:pytest -n 2 tests --ignore=tests/allotrope/schema_parser/generate_schemas_test.py
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else
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echo "Running tests for parser: ${{ needs.detect-changes.outputs.single-parser }}"
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hatch run test_all.py3.10:pytest -n 2 tests/parsers/${{ needs.detect-changes.outputs.single-parser }} tests/parser_factory_test.py::test_table_contents
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fi
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timeout-minutes: 15
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test_py_311:
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needs: detect-changes
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runs-on: ubuntu-latest
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name: Tests (python 3.11)
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@@ -69,10 +134,18 @@ jobs:
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- name: Install click
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run: pip install click!=8.3.0
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- name: Run Tests (excluding schema generation)
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run: hatch run test_all.py3.11:pytest -n 2 tests --ignore=tests/allotrope/schema_parser/generate_schemas_test.py
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timeout-minutes: 10
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run: |
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if [[ "${{ needs.detect-changes.outputs.run-all }}" == "true" ]]; then
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echo "Running all tests"
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hatch run test_all.py3.11:pytest -n 2 tests --ignore=tests/allotrope/schema_parser/generate_schemas_test.py
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else
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echo "Running tests for parser: ${{ needs.detect-changes.outputs.single-parser }}"
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hatch run test_all.py3.11:pytest -n 2 tests/parsers/${{ needs.detect-changes.outputs.single-parser }} tests/parser_factory_test.py::test_table_contents
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fi
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timeout-minutes: 15
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test_py_312:
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needs: detect-changes
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runs-on: ubuntu-latest
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name: Tests (python 3.12)
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@@ -88,14 +161,21 @@ jobs:
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- name: Install click
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run: pip install click!=8.3.0
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- name: Run Tests (excluding schema generation)
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run: hatch run test_all.py3.12:pytest -n 2 tests --ignore=tests/allotrope/schema_parser/generate_schemas_test.py
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timeout-minutes: 10
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run: |
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if [[ "${{ needs.detect-changes.outputs.run-all }}" == "true" ]]; then
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echo "Running all tests"
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hatch run test_all.py3.12:pytest -n 2 tests --ignore=tests/allotrope/schema_parser/generate_schemas_test.py
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else
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echo "Running tests for parser: ${{ needs.detect-changes.outputs.single-parser }}"
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hatch run test_all.py3.12:pytest -n 2 tests/parsers/${{ needs.detect-changes.outputs.single-parser }} tests/parser_factory_test.py::test_table_contents
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fi
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timeout-minutes: 15
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# Schema generation test - only runs when relevant files change or on main branch
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schema_generation_test:
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needs: changes
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needs: detect-changes
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# Always run on main branch, otherwise only when schema files change
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if: ${{ github.ref == 'refs/heads/main' || needs.changes.outputs.schema-generation == 'true' }}
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if: ${{ github.ref == 'refs/heads/main' || needs.detect-changes.outputs.schema-generation == 'true' }}
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runs-on: ubuntu-latest
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name: Schema Generation Test
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strategy:
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- name: Check PR title
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run: ./scripts/check_title
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env:
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PR_TITLE: ${{ github.event.pull_request.title }}
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PR_TITLE: ${{ github.event.pull_request.title }}

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