Testing: Add page about software testing with CrateDB (Java and Python)

- native: Python unittest, using cr8
- native: pytest-crate, using cr8
- testcontainers: Testcontainers for Java
- testcontainers: Testcontainers for Python (pytest and unittest)

docs/index.md

@@ -145,6 +145,15 @@ Integrations with machine learning frameworks.
 :::
 
 
+:::{grid-item-card} {material-outlined}`model_training;2em` Software Testing
+:link: testing
+:link-type: ref
+
+Test frameworks and libraries that support software integration testing with
+CrateDB.
+:::
+
+
 ::::
 
 
@@ -179,6 +188,7 @@ System Metrics <integrate/metrics>
 Data Visualization <integrate/visualize>
 Business Intelligence <integrate/bi>
 Machine Learning <integrate/ml>
+Software Testing <integrate/testing>
 ```
 
 ```{toctree}

docs/integrate/testing.md

@@ -0,0 +1,56 @@
+(testing)=
+# Software Testing with CrateDB
+
+This documentation section lists Java- and Python-based test frameworks
+and libraries that support software integration testing with CrateDB.
+
+
+(python-pytest)=
+## Python pytest
+
+The popular [pytest] framework makes it easy to write small tests, yet
+scales to support complex functional testing for applications and libraries.
+The [pytest-crate] package manages CrateDB instances for running integration
+tests against them. It is based on [cr8](#cr8), and provides the `crate`,
+`crate_execute`, and `crate_cursor` pytest fixtures on top.
+
+- [Using "pytest-crate" with CrateDB and pytest]
+
+
+(cr8)=
+(python-unittest)=
+## Python unittest
+
+[cr8], a collection of tools for CrateDB developers, provides primitives to
+manage CrateDB single-node and multi-node instances through its [run-crate]
+subsystem, that can be used to create test layers for Python's built-in
+[unittest] framework. 
+
+- [Using "cr8" test layers with CrateDB and unittest]
+
+
+(testcontainers)=
+## Testcontainers
+
+[Testcontainers] is an open source framework for providing throwaway,
+lightweight instances of databases, message brokers, web browsers, or
+just about anything that can run in a Docker container.
+
+CrateDB provides Testcontainers implementations for both Java and Python.
+
+- [Using "Testcontainers for Java" with CrateDB]
+- [Using "Testcontainers for Python" with CrateDB and pytest]
+- [Using "Testcontainers for Python" with CrateDB and unittest]
+
+
+[cr8]: https://pypi.org/project/cr8/
+[pytest]: https://docs.pytest.org/
+[pytest-crate]: https://pypi.org/project/pytest-crate/
+[run-crate]: https://pypi.org/project/cr8/#run-crate
+[Testcontainers]: https://testcontainers.com/
+[unittest]: https://docs.python.org/3/library/unittest.html
+[Using "cr8" test layers with CrateDB and unittest]: https://github.com/crate/cratedb-examples/tree/main/testing/native/python-unittest
+[Using "pytest-crate" with CrateDB and pytest]: https://github.com/crate/cratedb-examples/tree/main/testing/native/python-pytest
+[Using "Testcontainers for Java" with CrateDB]: https://github.com/crate/cratedb-examples/tree/main/testing/testcontainers/java
+[Using "Testcontainers for Python" with CrateDB and pytest]: https://github.com/crate/cratedb-examples/tree/main/testing/testcontainers/python-pytest
+[Using "Testcontainers for Python" with CrateDB and unittest]: https://github.com/crate/cratedb-examples/tree/main/testing/testcontainers/python-unittest