pw::thread::test::TestThreadContext Class Reference

Overview

TestThreadContext is a facade class for creating threads for unit tests in a platform independent way. To use it, set pw_thread_TEST_THREAD_CONTEXT_BACKEND to a backend that implements the pw::thread::test::backend::TestThreadContextNative class.

To create a thread for unit testing, instantiate a TestThreadContext, then call options() to obtain a pw::thread::Options. Use that Options to start a Thread. Users must ensure the context's lifespan outlives the thread it creates. Recycling or destroying the context is only allowed if join() is called on the thread first.

pw::thread::test::TestThreadContext context;
pw::Thread test_thread(context.options(), ExampleThreadFunction);

Threads created with TestThreadContext cannot be configured in any way. Backends should create threads with sufficient resources to execute typical unit tests. Tests for complex scenarios or interactions where e.g. priority matters are not portable, and TestThreadContext may not work for them. Non-portable tests may include backend-specific headers and instantiate thread options for their platforms as required.

Note

Developers should structure their logic so it can be tested without spawning a thread. Unit tests should avoid spawning threads unless absolutely necessary.

Warning

Threads using the TestThreadContext may only be detached if the context has a static lifetime, meaning the context is both never re-used and not destroyed before the end of the lifetime of the application.

Public Member Functions
	TestThreadContext (const TestThreadContext &)=delete
TestThreadContext &	operator= (const TestThreadContext &)=delete
const Options &	options () const

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The documentation for this class was generated from the following file:

• pw_thread/public/pw_thread/test_thread_context.h