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Abtin Keshavarzian
a84fc2e50b
This commit introduces `Message::ReadAndAdvance()` and its template flavor to the `Message` class. This helper method reads data from a `Message` at a given `OffsetRange` and advances the `OffsetRange` by the number of bytes read upon success. Sequential parsing of structured data (such as TLVs or protocol headers) is a common pattern across the OpenThread codebase. Previously, this required two separate calls: one to `Read()` and another to `AdvanceOffset()`. The new `ReadAndAdvance()` method consolidates these into a single, safer operation that ensures the offset is only advanced if the read operation succeeds. This commit updates numerous call sites across the core stack (MLE, BBR, DatasetManager, NetworkDiagnostic, DHCPv6, etc.) to use the new helper, improving code clarity and reducing boilerplate.
OpenThread Unit Tests
This page describes how to build and run OpenThread unit tests. It will be helpful for developers to debug failed unit test cases if they got one in CI or to add some new test cases.
Build Simulation
The unit tests cannot be built solely without building the whole project. So first build OpenThread on the simulation platform, which will also build all unit tests:
# Go to the root directory of OpenThread
$ script/cmake-build simulation
List all tests
To see what tests are available in OpenThread:
# Make sure you are at the simulation build directory (build/simulation)
$ ctest -N
Run the Unit Tests
To run all the unit tests:
# Make sure you are at the simulation build directory (build/simulation)
$ ctest
To run a specific unit test, for example, ot-test-spinel:
# Make sure you are at the simulation build directory (build/simulation)
$ ctest -R ot-test-spinel
Update a Test Case
If you are developing a unit test case and have made some changes in the test source file, you will need rebuild the test before running it:
# Make sure you are at the simulation build directory (build/simulation)
$ ninja <test_name>
This will only build the test and take a short time.
If any changes or fixes were made to the OpenThread code, then you'll need to rebuild the entire project:
# Make sure you are at the simulation build directory (build/simulation)
$ ninja
This will build the updated OpenThread code as well as the test cases.