68 lines
2.7 KiB
ReStructuredText
68 lines
2.7 KiB
ReStructuredText
Unit Testing in ESP32
|
||
=====================
|
||
|
||
ESP-IDF comes with a unit test app based on Unity - unit test framework. Unit tests are integrated in the ESP-IDF repository and are placed in ``test`` subdirectory of each component respectively.
|
||
|
||
Adding unit tests
|
||
-----------------
|
||
|
||
Unit tests are added in the ``test`` subdirectory of the respective component.
|
||
Tests are added in C files, a single C file can include multiple test cases.
|
||
Test files start with the word "test".
|
||
|
||
The test file should include unity.h and the header for the C module to be tested.
|
||
|
||
Tests are added in a function in the C file as follows::
|
||
|
||
TEST_CASE("test name", "[module name]"
|
||
{
|
||
// Add test here
|
||
}
|
||
|
||
First argument is a descriptive name for the test, second argument is an identifier in square brackets.
|
||
Identifiers are used to group related test, or tests with specific properties.
|
||
|
||
There is no need to add a main function with ``UNITY_BEGIN()`` and ``UNITY_END()`` in each test case.
|
||
``unity_platform.c`` will run ``UNITY_BEGIN()``, run the tests cases, and then call ``UNITY_END()``.
|
||
|
||
Each `test` subdirectory needs to include component.mk file with at least the following line of code::
|
||
|
||
COMPONENT_ADD_LDFLAGS = -Wl,--whole-archive -l$(COMPONENT_NAME) -Wl,--no-whole-archive
|
||
|
||
See http://www.throwtheswitch.org/unity for more information about writing tests in Unity.
|
||
|
||
Building unit test app
|
||
----------------------
|
||
|
||
Follow the setup instructions in the top-level esp-idf README.
|
||
Make sure that IDF_PATH environment variable is set to point to the path of esp-idf top-level directory.
|
||
|
||
Change into tools/unit-test-app directory to configure and build it:
|
||
|
||
* `make menuconfig` - configure unit test app.
|
||
|
||
* `make TESTS_ALL=1` - build unit test app with tests for each component having tests in the ``test`` subdirectory.
|
||
* `make TEST_COMPONENTS='xxx'` - build unit test app with tests for specific components.
|
||
|
||
When the build finishes, it will print instructions for flashing the chip. You can simply run ``make flash`` to flash all build output.
|
||
|
||
You can also run ``make flash TESTS_ALL=1`` or ``make TEST_COMPONENTS='xxx'`` to build and flash. Everything needed will be rebuilt automatically before flashing.
|
||
|
||
Use menuconfig to set the serial port for flashing.
|
||
|
||
Running unit tests
|
||
------------------
|
||
|
||
After flashing reset the ESP32 and it will boot the unit test app.
|
||
|
||
Unit test app prints a test menu with all available tests.
|
||
|
||
Test cases can be run by inputting one of the following:
|
||
|
||
- Test case name in quotation marks to run a single test case
|
||
|
||
- Test case index to run a single test case
|
||
|
||
- Module name in square brackets to run all test cases for a specific module
|
||
|
||
- An asterisk to run all test cases
|