74 lines
2.6 KiB
Markdown
74 lines
2.6 KiB
Markdown
# Tests for LVGL
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The tests in the folder can be run locally and automatically by GitHub CI.
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## Running locally
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### Local
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1. Install requirements by:
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```sh
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scripts/install-prerequisites.sh
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```
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2. Run all executable tests with `./tests/main.py test`.
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3. Build all build-only tests with `./tests/main.py build`.
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4. Clean prior test build, build all build-only tests,
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run executable tests, and generate code coverage
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report `./tests/main.py --clean --report build test`.
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5. You can re-generate the test images by adding option `--update-image`.
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It relies on scripts/LVGLImage.py, which requires pngquant and pypng.
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You can run below command firstly and follow instructions in logs to install them.
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`./tests/main.py --update-image test`
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Note that different version of pngquant may generate different images.
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As of now the generated image on CI uses pngquant 2.13.1-1.
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For full information on running tests run: `./tests/main.py --help`.
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### Docker
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To run the tests in an environment matching the CI setup:
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1. Build it
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```bash
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docker build . -f tests/Dockerfile -t lvgl_test_env
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```
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2. Run the tests
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```bash
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docker run --rm -it -v $(pwd):/work lvgl_test_env "./tests/main.py"
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```
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This ensures you are testing in a consistent environment with the same dependencies as the CI pipeline.
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## Running automatically
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GitHub's CI automatically runs these tests on pushes and pull requests to `master` and `releasev8.*` branches.
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## Directory structure
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- `src` Source files of the tests
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- `test_cases` The written tests,
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- `test_runners` Generated automatically from the files in `test_cases`.
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- other miscellaneous files and folders
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- `ref_imgs` - Reference images for screenshot compare
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- `report` - Coverage report. Generated if the `report` flag was passed to `./main.py`
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- `unity` Source files of the test engine
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## Add new tests
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### Create new test file
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New test needs to be added into the `src/test_cases` folder. The name of the files should look like `test_<name>.c`. The basic skeleton of a test file copy `_test_template.c`.
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### Asserts
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See the list of asserts [here](https://github.com/ThrowTheSwitch/Unity/blob/master/docs/UnityAssertionsReference.md).
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There are some custom, LVGL specific asserts:
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- `TEST_ASSERT_EQUAL_SCREENSHOT("image1.png")` Render the active screen and compare its content with an image in the `ref_imgs` folder.
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- If the reference image is not found it will be created automatically from the rendered screen.
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- If the compare fails an `<image_name>_err.png` file will be created with the rendered content next to the reference image.
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- `TEST_ASSERT_EQUAL_COLOR(color1, color2)` Compare two colors.
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