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58 lines
2.2 KiB
Markdown
58 lines
2.2 KiB
Markdown
2 years ago
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# 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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### Requirements (Linux)
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Install requirements by:
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```sh
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scripts/install-prerequisites.sh
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```
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### Run test
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1. Run all executable tests with `./tests/main.py test`.
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2. Build all build-only tests with `./tests/main.py build`.
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3. 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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For full information on running tests run: `./tests/main.py --help`.
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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 compare fails `lvgl/test_screenshot_error.h` is created with the content of the frame buffer as an image.
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To see the that image `#include "test_screenshot_error.h"` and call `test_screenshot_error_show();`.
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- `TEST_ASSERT_EQUAL_COLOR(color1, color2)` Compare two colors.
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### Adding new reference images
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The reference images can be taken by copy-pasting the test code in to LVGL simulator and saving the screen.
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LVGL needs to
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- 800x480 resolution
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- 32 bit color depth
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- `LV_USE_PERF_MONITOR` and `LV_USE_MEM_MONITOR` disabled
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- use the default theme, with the default color (don't set a theme manually)
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