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test: run tests/integration via pytester without docker compose - #1103
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michaelboulton
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August 31, 2026 12:07
📝 WalkthroughWalkthroughThe change adds background-thread integration servers, subprocess-based YAML execution, configurable test hosts, parallel pytest execution, subprocess coverage, and updated Docker, documentation, and collection settings. ChangesIntegration test execution
Estimated code review effort: 3 (Moderate) | ~20 minutes Merge Risk: 🟡 Moderate · up to The generic integration environment currently executes the YAML suite twice, increasing CI time and potentially repeating state-changing requests. This should be fixed or explicitly accepted before merging. Sequence Diagram(s)sequenceDiagram
participant Developer
participant Pytest
participant IntegrationRunner
participant FlaskServer
Developer->>Pytest: run integration tests
Pytest->>IntegrationRunner: collect YAML runner
IntegrationRunner->>FlaskServer: start background server
FlaskServer-->>IntegrationRunner: return available host and port
IntegrationRunner->>Pytest: run YAML file in subprocess
Pytest->>FlaskServer: send HTTP requests
FlaskServer-->>Pytest: return test responses
🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (4 passed)
Full details: Docstring CoverageExplanation Docstring coverage is 36.36% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 11 functions across 5 files. (11 skipped: 11 unsupported.)
✨ Finishing Touches 💡 1📝 Generate docstrings 💡
🧪 Generate unit tests (beta)
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In `@tox-integration.ini`:
- Line 17: Update the py3-generic test configuration to run the generic YAML
suite only once by excluding generic from the common pytest command or removing
the redundant generic-specific pytest command. Preserve the tavern-ci and
tavern.core.run commands.
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Run ID: 99032bc1-dc9d-4ff2-ae8c-a7dfbb45f13b
📒 Files selected for processing (16)
.github/workflows/main.ymlREADME.mdexample/allure/docker-compose.yamlexample/allure/tests/common.yamlpyproject.tomlscripts/coverage.shtests/integration/README.mdtests/integration/common.yamltests/integration/conftest.pytests/integration/extra.yamltests/integration/global_cfg.yamltests/integration/server.pytests/integration/test_parametrize.tavern.yamltests/integration/test_run_integration_suite.pytests/unit/test_schema.pytox-integration.ini
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Plain 'pytest' at the repo top level now runs the integration suite alongside the unit tests: the flask server from server.py starts in a background thread on a random port (one per pytest-xdist worker) and each test_*.tavern.yaml file runs in a pytest subprocess via the pytester plugin. The tox-integration generic/noextra envs keep the docker compose setup as a mirror, still exercising the tavern-ci CLI and tavern.core.run entrypoints; a TAVERN_INTEGRATION_ALLOW_COLLECT env var switches the directory between collecting the yaml files directly (tox/docker) and collecting only the pytester runner (default). The hardcoded http://localhost:5003 in the yaml config files now comes from the TEST_HOST env var so the same tests work against either server.
…nd combine coverage Disabling hypothesis/xdist/allure/asyncio/anyio/faker/random_order in the per-yaml-file pytest subprocesses cuts the integration suite from ~41s to ~30s, since plugin loading dominated the subprocess startup time. Coverage is now measured across the unit tests and the integration subprocesses in one top-level run: pytest-cov 7 dropped its own subprocess support, so use coverage.py's native 'patch = ["subprocess"]' with 'parallel = true' and let pytest-cov combine the parallel data files. scripts/coverage.sh becomes a single 'pytest --cov tavern' invocation instead of running two docker tox envs and hand-combining data files.
The empty-value BadSchemaError only exists once YamlItem's constructor has globally patched yaml.parser.Parser.process_empty_scalar, so these tests silently relied on an earlier test in the same process constructing a YamlItem. Under pytest-xdist a worker can run them first, making them flaky. Apply the parser patch deterministically with an autouse fixture instead.
The unit-tests job now runs the top-level pytest suite (which includes tests/integration) with -n 3; each xdist worker starts its own integration server on a random port so the runner tests parallelize safely. Cuts the suite from ~64s to ~26s locally.
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Plain 'pytest' at the repo top level now runs the integration suite alongside the unit tests: the flask server from server.py starts in a background thread on a random port (one per pytest-xdist worker) and each test_*.tavern.yaml file runs in a pytest subprocess via the pytester plugin.
The tox-integration generic/noextra envs keep the docker compose setup as a mirror, still exercising the tavern-ci CLI and tavern.core.run entrypoints; a TAVERN_INTEGRATION_ALLOW_COLLECT env var switches the directory between collecting the yaml files directly (tox/docker) and collecting only the pytester runner (default).
The hardcoded http://localhost:5003 in the yaml config files now comes from the TEST_HOST env var so the same tests work against either server.
Summary by CodeRabbit
Documentation
Tests
Examples