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…into feature/conversations/initial * 'main' of https://github.com/Azure/azure-sdk-for-python: (273 commits) [purview scanning] new release by new LLC version (#20823) [Purview catalog] release for new api-version `2021-09-01` (#20822) disable regression testing for beta version of questionanswering (#20924) Oct release (#20890) Sync eng/common directory with azure-sdk-tools for PR 2046 (#20911) [ServiceBus] Add large message support to SBAdministrationClient (#20812) fix CI (#20936) Update Monitor Query README and logs query client comments (#20933) [formrecognizer] Fix v2 custom forms tests (#20923) Resolving Build Warnings (#20887) [eng] have verify autorest warn instead of raise (#20913) [rest] add response backcompat mixin (#20827) [formrecognizer] Add prebuilt-document samples and tests (#20894) [formrecognizer] regenerate on latest (#20867) Small tweaks to Monitor Query SDK README (#20905) [AutoRelease] t2-netapp-2021-09-22-09782 (#20783) [AutoRelease] t2-extendedlocation-2021-09-22-24922 (#20782) Python 2.7 warning (#20895) [Perf] keyvault-secrets test improvements (#20900) Add Python 2 deprecation on front page (#20799) ...
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@@ -114,3 +114,6 @@ sdk/cosmos/azure-cosmos/test/test_config.py | |
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| # env vars | ||
| .env | ||
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| # local SSL certificate folder | ||
| .certificate | ||
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| # Guide for migrating to the test proxy from vcrpy | ||
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| This guide describes the changes that service SDKs should make to their test frameworks in order to take advantage of | ||
| the Azure SDK test proxy. | ||
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| Documentation of the motivations and goals of the test proxy can be found [here][general_docs] in the azure-sdk-tools | ||
| GitHub repository, and documentation of how to set up and use the proxy can be found [here][detailed_docs]. | ||
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| ## Update existing tests | ||
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| ### Current test structure | ||
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| Test classes currently inherit from AzureTestCase, and test methods can optionally use decorators: | ||
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| ```py | ||
| from devtools_testutils import AzureTestCase | ||
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| class TestExample(AzureTestCase): | ||
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| def test_example(self): | ||
| ... | ||
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| @ExamplePreparer() | ||
| def test_example_with_preparer(self): | ||
| ... | ||
| ``` | ||
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| ### New test structure | ||
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| To use the proxy, test classes should inherit from AzureRecordedTestCase and recorded test methods should use a | ||
| RecordedByProxy decorator: | ||
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| ```py | ||
| from devtools_testutils import AzureRecordedTestCase, RecordedByProxy | ||
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| class TestExample(AzureRecordedTestCase): | ||
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| @RecordedByProxy | ||
| def test_example(self): | ||
| ... | ||
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| @ExamplePreparer() | ||
| @RecordedByProxy | ||
| def test_example_with_preparer(self): | ||
| ... | ||
| ``` | ||
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| For async tests, import the RecordedByProxyAsync decorator from `devtools_testutils.aio` and use it in the same | ||
| way as RecordedByProxy. | ||
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| > **Note:** since AzureRecordedTestCase doesn't inherit from `unittest.TestCase`, test class names need to start | ||
| > with "Test" in order to be properly collected by pytest by default. For more information, please refer to | ||
| > [pytest's documentation][pytest_collection]. | ||
| ## Run the tests | ||
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| ### Perform one-time setup | ||
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| The test proxy is made available for your tests via a Docker container. Some tests require an SSL connection to work, so | ||
| the Docker image used for the container has a certificate imported that you need to trust on your machine. Instructions | ||
| on how to do so can be found [here][proxy_cert_docs]. | ||
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| ### Start the proxy server | ||
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| There is a [PowerShell script][docker_start_proxy] in `eng/common/testproxy` that will fetch the proxy Docker image if | ||
| you don't already have it, and will start or stop a container running the image for you. You can run the following | ||
| command from the root of the `azure-sdk-for-python` directory to start the container whenever you want to make the test | ||
| proxy available for running tests: | ||
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| ```powershell | ||
| .\eng\common\testproxy\docker-start-proxy.ps1 "start" | ||
| ``` | ||
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| Note that the proxy is available as long as the container is running. In other words, you don't need to start and | ||
| stop the container for each test run or between tests for different SDKs. You can run the above command in the morning | ||
| and just stop the container whenever you'd like. To stop the container, run the same command but with `"stop"` in place | ||
| of `"start"`. In the future, the proxy container will be set up and started automatically when tests are run, and | ||
| starting it manually will be optional. | ||
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| For more details on proxy startup, please refer to the [proxy documentation][detailed_docs]. | ||
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| ### Record or play back tests | ||
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| Configuring live and playback tests is done with the `AZURE_TEST_RUN_LIVE` environment variable. When this variable is | ||
| set to "true" or "yes", live tests will run and produce recordings. When this variable is set to "false" or "no", or | ||
| not set at all, tests will run in playback mode and attempt to match existing recordings. | ||
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| Recordings for a given package will end up in that package's `/tests/recordings` directory, just like they currently | ||
| do. | ||
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| > **Note:** at this time, support for configuring live or playback tests with a `testsettings_local.cfg` file has been | ||
| > deprecated in favor of using just `AZURE_TEST_RUN_LIVE`. | ||
| ### Register sanitizers | ||
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| Since the test proxy doesn't use [`vcrpy`][vcrpy], tests don't use a scrubber to sanitize values in recordings. | ||
| Instead, sanitizers (as well as matchers and transforms) can be registered on the proxy as detailed in | ||
| [this][sanitizers] section of the proxy documentation. At the time of writing, sanitizers can be registered via the | ||
| `add_sanitizer` method in `devtools_testutils`. | ||
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| Sanitizers, matchers, and transforms remain registered until the proxy container is stopped, so for any sanitizers that | ||
| are shared by different tests, using a session fixture declared in a `conftest.py` file is recommended. Please refer to | ||
| [pytest's scoped fixture documentation][pytest_fixtures] for more details. | ||
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| For example, to sanitize URIs in recordings, you can set up a URI sanitizer for all tests in the pytest session by | ||
| adding something like the following in the package's `conftest.py` file: | ||
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| ```python | ||
| from devtools_testutils import add_sanitizer | ||
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| # autouse=True will trigger this fixture on each pytest run, even if it's not explicitly used by a test method | ||
| @pytest.fixture(scope="session", autouse=True) | ||
| def sanitize_uris(): | ||
| add_sanitizer(ProxyRecordingSanitizer.URI, value="fakeendpoint") | ||
| ``` | ||
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| `add_sanitizer` accepts a sanitizer, matcher, or transform type from the ProxyRecordingSanitizer enum as a required | ||
| parameter. Keyword-only arguments can be provided to customize the sanitizer; for example, in the snippet above, any | ||
| request URIs that match the default URI regular expression will have their domain name replaced with "fakeendpoint". A | ||
| request made to `https://tableaccount.table.core.windows.net` will be recorded as being made to | ||
| `https://fakeendpoint.table.core.windows.net`. | ||
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| ## Implementation details | ||
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| ### What does the test proxy do? | ||
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| The gist of the test proxy is that it stands in between your tests and the service. What this means is that test | ||
| requests which would usually go straight to the service should instead point to the locally-hosted test proxy. | ||
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| For example, if an operation would typically make a GET request to | ||
| `https://fakeazsdktestaccount.table.core.windows.net/Tables`, that operation should now be sent to | ||
| `https://localhost:5001/Tables` instead. The original endpoint should be stored in an `x-recording-upstream-base-uri` -- | ||
| the proxy will send the original request and record the result. | ||
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| The RecordedByProxy and RecordedByProxyAsync decorators patch test requests to do this for you. | ||
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| ### How does the test proxy know when and what to record or play back? | ||
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| This is achieved by making POST requests to the proxy server that say whether to start or stop recording or playing | ||
| back, as well as what test is being run. | ||
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| To start recording a test, the server should be primed with a POST request: | ||
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| ``` | ||
| URL: https://localhost:5001/record/start | ||
| headers { | ||
| "x-recording-file": "<path-to-test>/recordings/<testfile>.<testname>" | ||
| } | ||
| ``` | ||
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| This will return a recording ID in an `x-recording-id` header. This ID should be sent as an `x-recording-id` header in | ||
| all further requests during the test. | ||
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| After the test has finished, a POST request should be sent to indicate that recording is complete: | ||
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| ``` | ||
| URL: https://localhost:5001/record/stop | ||
| headers { | ||
| "x-recording-id": "<x-recording-id>" | ||
| } | ||
| ``` | ||
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| Running tests in playback follows the same pattern, except that requests will be sent to `/playback/start` and | ||
| `/playback/stop` instead. A header, `x-recording-mode`, should be set to `record` for all requests when recording and | ||
| `playback` when playing recordings back. More details can be found [here][detailed_docs]. | ||
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| The RecordedByProxy and RecordedByProxyAsync decorators send the appropriate requests at the start and end of each test | ||
| case. | ||
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| [detailed_docs]: https://github.com/Azure/azure-sdk-tools/tree/main/tools/test-proxy/Azure.Sdk.Tools.TestProxy/README.md | ||
| [docker_start_proxy]: https://github.com/Azure/azure-sdk-for-python/blob/main/eng/common/testproxy/docker-start-proxy.ps1 | ||
| [general_docs]: https://github.com/Azure/azure-sdk-tools/blob/main/tools/test-proxy/README.md | ||
| [proxy_cert_docs]: https://github.com/Azure/azure-sdk-tools/blob/main/tools/test-proxy/documentation/trusting-cert-per-language.md | ||
| [pytest_collection]: https://docs.pytest.org/latest/goodpractices.html#test-discovery | ||
| [pytest_fixtures]: https://docs.pytest.org/latest/fixture.html#scope-sharing-fixtures-across-classes-modules-packages-or-session | ||
| [sanitizers]: https://github.com/Azure/azure-sdk-tools/blob/main/tools/test-proxy/Azure.Sdk.Tools.TestProxy/README.md#session-and-test-level-transforms-sanitiziers-and-matchers | ||
| [vcrpy]: https://vcrpy.readthedocs.io |
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