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Test Apps

This directory contains a set of ESP-IDF projects to be used as tests only, which aim to exercise various configuration of components to check completely arbitrary functionality should it be building only, executing under various conditions or combination with other components, including custom test frameworks.

The test apps are not intended to demonstrate the ESP-IDF functionality in any way.

Test Apps projects

Test applications are treated the same way as ESP-IDF examples, so each project directory shall contain

Build recipe in cmake and the main component with app sources
Configuration files, sdkconfig.ci and similar (see below)
Test executor in ttfw_idf format if the project is intended to also run tests (otherwise the example is build only)
- test file in the project dir must end with _test.py, by should be named app_test.py
- test cases shall be decorated with @ttfw_idf.idf_custom_test(env_tag="...")

CI Behavior

Configuration Files

For each project in test_apps (and also examples):

If a file sdkconfig.ci exists then it's built as the default CI config (same as if this file was named sdkconfig.ci.default)
If any files sdkconfig.ci.<CONFIG> exist then these are built as alternative configs, with the specified <CONFIG> name.
By default, every CI configurations is built for every target SoC (an m * n configuration matrix). However if any sdkconfig.ci file contains a line of the form CONFIG_IDF_TARGET="targetname" then that CI config is only built for that one target.
Each configuration is also built with the contents of any sdkconfig.defaults file or a file named sdkconfig.defaults.<TARGET> appended. (Same as a normal ESP-IDF project build.)

Test Execution

If an example test or test app test supports more targets than just ESP32, then the app_test.py file needs to specify the list of supported targets in the test decorator. For example:

@ttfw_idf.idf_example_test(env_tag='Example_GENERIC', target=['esp32', 'esp32s2'])
def test_app_xyz(env, extra_data):

If the app test supports multiple targets but you only want some of these targets to be run automatically in CI, the list can be further filtered down by adding the ci_target list:

@ttfw_idf.idf_example_test(env_tag='Example_GENERIC', target=['esp32', 'esp32s2'], ci_target=['esp32'])
def test_app_xyz(env, extra_data):

(If no ci_target list is specified, all supported targets will be tested in CI.)

Test Apps layout

The test apps should be grouped into subdirectories by category. Categories are:

protocols contains test of protocol interactions.
network contains system network tests
system contains tests on the internal chip features, debugging and development tools.
security contains tests on the chip security features.

Test Apps local execution

Append relevant sdkconfig.ci.<CONFIG> to the sdkconfig for the configuration under test
Run idf.py menuconfig to configure local project attributes
Run idf.py build to build the test app
Run python app_test.py to run the test locally

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