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If you want to contribute to a file that is generated (header contains Code generated by Microsoft (R) AutoRest Code Generator.), the best approach to open a PR on the initial Swagger specification, as we can NOT merge a PR on generated code (it would be replaced by next generation). See https://github.com/Azure/azure-rest-api-specs/ for details.
The Azure SDK team's Python CI leverages the tool tox to distribute tests to virtual environments, handle test dependency installation, and coordinate tooling reporting during PR/CI builds. This means that a dev working locally can reproduce exactly what the build machine is doing.
Traditionally, the tox.ini file for a package sits alongside the setup.py in source code. The azure-sdk-for-python necessarily does not adhere to this policy. There are over one-hundred packages contained here-in. That's a lot of tox.ini files to maintain!
Instead, the CI system leverages the --root argument which is new to tox4. The --root argument allows tox to act as if the tox.ini is located in whatever directory you specify!
A given tox.ini works on the concept of test environments. A given test environment is a combination of:
- An identifier (or identifiers)
- A targeted Python version
toxwill default to base python executing thetoxcommand if no Python environment is specified
- (optionally) an OS platform
Internally tox leverages virtualenv to create each test environment's virtual environment.
This means that once the tox workflow is in place, all tests will be executed within a virtual environment.
You can use the command tox list to list all the environments provided by a tox.ini file. You can either use that command in the
same directory as the file itself, or use the --conf argument to specify the path to it directly.
Sample output of tox list:
sdk-for-python/eng/tox> tox list
default environments:
whl -> Builds a wheel and runs tests
sdist -> Builds a source distribution and runs tests
additional environments:
pylint -> Lints a package with a pinned version of pylint
next-pylint -> Lints a package with pylint (version 2.15.8)
mypy -> Typechecks a package with mypy (version 1.0.0)
next-mypy -> Typechecks a package with the latest version of mypy
pyright -> Typechecks a package with pyright (version 1.1.287)
next-pyright -> Typechecks a package with the latest version of static type-checker pyright
verifytypes -> Verifies the "type completeness" of a package with pyright
whl_no_aio -> Builds a wheel without aio and runs tests
develop -> Tests a package
sphinx -> Builds a package's documentation with sphinx
depends -> Ensures all modules in a target package can be successfully imported
verifywhl -> Verify directories included in whl and contents in manifest file
verifysdist -> Verify directories included in sdist and contents in manifest file. Also ensures that py.typed configuration is correct within the setup.py
devtest -> Tests a package against dependencies installed from a dev index
latestdependency -> Tests a package against the released, upper-bound versions of its azure dependencies
mindependency -> Tests a package against the released, lower-bound versions of its azure dependencies
apistub -> Generate an api stub of a package ( for https://apiview.dev )
bandit -> Runs bandit, a tool to find common security issues, against a package
samples -> Runs a package's samples
breaking -> Runs the breaking changes checker against a package
Basic usage of tox within this monorepo is:
pip install "tox<5"- Run
tox run -e ENV_NAME -c path/to/tox.ini --root path/to/python_package
- Note: You can use environment variables to provide defaults for tox config values
- With
TOX_CONFIG_FILEset to the absolute path oftox.ini, you can avoid needing-c path/to/tox.iniin your tox invocations - With
TOX_ROOT_DIRset to the absolute path to your python package, you can avoid needing--root path/to/python_package
- With
The common tox.ini location is eng/tox/tox.ini within the repository.
If at any time you want to blow away the tox created virtual environments and start over, simply append -r to any tox invocation!
- Run
tox run -e mypy -c ./eng/tox/tox.ini --root sdk/core/azure-core
- Execute
tox run -c ./eng/tox/tox.ini --root sdk/storage/azure-storage-blob
Note that we didn't provide an environment argument for this example. Reason here is that the default environment selected by our common tox.ini file is one that runs pytest.
Used for test execution across the spectrum of all the platforms we want to support. Maintained at a platform specific level just in case we run into platform-specific bugs.
- Installs the wheel, runs tests using the wheel
\> tox run -e whl -c <path to tox.ini> --root <path to python package>
Used for the local dev loop.
- Installs package in editable mode
- Runs tests using the editable mode installation, not the wheel
\> tox run -e sdist -c <path to tox.ini> --root <path to python package>
Pylint install and run.
\> tox run -e pylint -c <path to tox.ini> --root <path to python package>
Mypy install and run.
\> tox run -e mypy -c <path to tox.ini> --root <path to python package>
Generate sphinx doc for this package.
\> tox run -e sphinx -c <path to tox.ini> --root <path to python package>
tox supports custom arguments, and the defined pytest environments within the common tox.ini also allow these. Essentially, separate the arguments you want passed to pytest by a -- in your tox invocation.
Tox Documentation on Positional Arguments
Example: Invoke tox, breaking into the debugger on failure
tox run -e whl -c <path to tox.ini> --root <path to python package> -- --pdb
SDK performance testing is supported via the custom perfstress framework. For full details on this framework, and how to write and run tests for an SDK - see the perfstress tests documentation.
We maintain an additional document that has a ton of detail as to what is actually happening in these executions.
Daily dev build version of Azure sdk packages for python are available and are uploaded to Azure devops feed daily. We have also created a tox environment to test a package against dev built version of dependent packages. Below is the link to Azure devops feed.
https://dev.azure.com/azure-sdk/public/_packaging?_a=feed&feed=azure-sdk-for-python
pip install <package-name> --extra-index-url https://pkgs.dev.azure.com/azure-sdk/public/_packaging/azure-sdk-for-python/pypi/simple --pre
For e.g.
pip install azure-appconfiguration==1.0.0b6.dev20191205001 --extra-index-url https://pkgs.dev.azure.com/azure-sdk/public/_packaging/azure-sdk-for-python/pypi/simple
To test a package being developed against latest dev build version of dependent packages: a. cd to package root folder b. run tox environment devtest
\> tox run -e devtest -c <path to tox.ini> --root <path to python package>
This tox test( devtest) will fail if installed dependent packages are not dev build version.
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