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37 lines
2.2 KiB
Markdown
37 lines
2.2 KiB
Markdown
# Unit Test App
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ESP-IDF unit tests are run using Unit Test App. The app can be built with the unit tests for a specific component. Unit tests are in `test` subdirectories of respective components.
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# Building Unit Test App
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## CMake
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* Follow the setup instructions in the top-level esp-idf README.
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* Set IDF_PATH environment variable to point to the path to the esp-idf top-level directory.
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* Change into `tools/unit-test-app` directory
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* `idf.py menuconfig` to configure the Unit Test App.
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* `idf.py -T <component> -T <component> ... build` with `component` set to names of the components to be included in the test app. Or `idf.py -T all build` to build the test app with all the tests for components having `test` subdirectory.
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* Follow the printed instructions to flash, or run `idf.py -p PORT flash`.
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* Unit test have a few preset sdkconfigs. It provides command `idf.py ut-clean-config_name` and `idf.py ut-build-config_name` (where `config_name` is the file name under `unit-test-app/configs` folder) to build with preset configs. For example, you can use `idf.py -T all ut-build-default` to build with config file `unit-test-app/configs/default`. Built binary for this config will be copied to `unit-test-app/output/config_name` folder.
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* You may extract the test cases presented in the built elf file by calling `ElfUnitTestParser.py <your_elf>`.
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# Flash Size
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The unit test partition table assumes a 4MB flash size. When testing `-T all`, this additional factory app partition size is required.
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If building unit tests to run on a smaller flash size, edit `partition_table_unit_tests_app.csv` and use `-T <component> <component> ...` or instead of `-T all` tests don't fit in a smaller factory app partition (exact size will depend on configured options).
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# Running Unit Tests
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The unit test loader will prompt by showing a menu of available tests to run:
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* Type a number to run a single test.
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* `*` to run all tests.
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* `[tagname]` to run tests with "tag"
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* `![tagname]` to run tests without "tag" (`![ignore]` is very useful as it runs all CI-enabled tests.)
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* `"test name here"` to run test with given name
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# Testing Unit Tests with CI
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For now we prefer to use component-based unit test to test in CI. Running unit-test-app in CI is being deprecated.
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