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alex bc87a57de2
lib/lvgl: update from v8.3.1 to latest v8.3.11 
git subtree --prefix=lib/lvgl --squash pull \
      https://github.com/lvgl/lvgl v8.3.11

v8.3 release notes: https://docs.lvgl.io/8.3/CHANGELOG.html
 		9 months ago
..
makefile lib/lvgl: update from v8.3.1 to latest v8.3.11 9 months ago
ref_imgs lib/lvgl: update from v8.3.1 to latest v8.3.11 9 months ago
src lib/lvgl: update from v8.3.1 to latest v8.3.11 9 months ago
unity lib/lvgl: update from v8.3.1 to latest v8.3.11 9 months ago
.gitignore lib: add lvgl v8.3.1 as a subtree module 2 years ago
CMakeLists.txt lib/lvgl: update from v8.3.1 to latest v8.3.11 9 months ago
README.md lib: add lvgl v8.3.1 as a subtree module 2 years ago
config.yml lib: add lvgl v8.3.1 as a subtree module 2 years ago
main.py lib: add lvgl v8.3.1 as a subtree module 2 years ago

README.md

Tests for LVGL

The tests in the folder can be run locally and automatically by GitHub CI.

Running locally

Requirements (Linux)

Install requirements by:

scripts/install-prerequisites.sh

Run test

  1. Run all executable tests with ./tests/main.py test.
  2. Build all build-only tests with ./tests/main.py build.
  3. Clean prior test build, build all build-only tests, run executable tests, and generate code coverage report ./tests/main.py --clean --report build test.

For full information on running tests run: ./tests/main.py --help.

Running automatically

GitHub's CI automatically runs these tests on pushes and pull requests to master and releasev8.* branches.

Directory structure

  • src Source files of the tests
    • test_cases The written tests,
    • test_runners Generated automatically from the files in test_cases.
    • other miscellaneous files and folders
  • ref_imgs - Reference images for screenshot compare
  • report - Coverage report. Generated if the report flag was passed to ./main.py
  • unity Source files of the test engine

Add new tests

Create new test file

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.

Asserts

See the list of asserts here.

There are some custom, LVGL specific asserts:

  • TEST_ASSERT_EQUAL_SCREENSHOT("image1.png") Render the active screen and compare its content with an image in the ref_imgs folder. If the compare fails lvgl/test_screenshot_error.h is created with the content of the frame buffer as an image. To see the that image #include "test_screenshot_error.h" and call test_screenshot_error_show();.
  • TEST_ASSERT_EQUAL_COLOR(color1, color2) Compare two colors.

Adding new reference images

The reference images can be taken by copy-pasting the test code in to LVGL simulator and saving the screen. LVGL needs to

  • 800x480 resolution
  • 32 bit color depth
  • LV_USE_PERF_MONITOR and LV_USE_MEM_MONITOR disabled
  • use the default theme, with the default color (don't set a theme manually)