pytest-dpg
Report a Bug · Request a Feature · Ask a Question

---

About

pytest-dpg is a pytest plugin for testing DearPyGui (DPG) applications.

Features

• Automates user interactions like clicking buttons, switching tabs, and dragging sliders
• Runs GUI tests in a separate process for concurrency, stability, and isolation
• Easy to use API for interacting with DPG elements
• Requires no application code modifications

Installation

pipx is recommended although any package manager that supports pyproject.toml files can be used.

pipx install pytest-dpg

How it works

pytest-dpg creates a controlled environment for testing before performing introspection on the application:

• DPG Loop Patching: dpgtester patches DearPyGui's main loop (dpg.start_dearpygui()) with a custom loop that allows for command insertion between frames.
• Item Identification: utilizes DPG's internal APIs to locate items based on their labels, values, or adjacent items. This allows it to (hopefully) find the correct screen coordinates for interactions.

Usage

pytest-dpg automatically makes the pytest fixture dpgtester available for use

def test_my_gui(dpgtester):
    # This function should setup and start your application when run
    func = your_gui_function

    # Start your GUI application
    dpgtester.set_target(func)
    dpgtester.start_gui()

    # Interact with GUI elements
    dpgtester.click_button("Submit")
    dpgtester.click_tab("Settings")
    dpgtester.drag_slider("Volume", 75)

Limitations

While pytest-dpg aims to provide a robust testing solution for DearPyGui applications, there are some current limitations to be aware of:

• Limited Application Support: only applications that utilize dpg.start_dearpygui() are curently supported

• Limited Widget Support: only the following widgets are currently supported

  • regular button
  • horizontal slider
  • tab
  • collapsible header
  • text input box
  • combo box

• Complex Layouts: Very complex or dynamically changing layouts might pose challenges for element identification and interaction.

We are continuously working on improving pytest-dpg and addressing these limitations. Contributions and feedback are always welcome!

API Reference

dpgtester

• set_target(func: Callable) Set the target function for the GUI test
• start_gui() Start the GUI in a separate process
• python stop_gui() Stop the GUI process if it's running
• click_button(label: str) Click a button with the given label
• click_tab(label: str) Click a tab with the given label
• drag_slider(label: str, value: int) Drag a slider to the specified value

pytest_dpg

By default, dpgtester will execute actions as quickly as possible. To slow down interactions, the following attributes can be increased

import pytest_dpg

pytest_dpg.PAUSE = 0.25
pytest_dpg.MINIMUM_DURATION = 0.5

Support

Reach out to the maintainer at one of the following places:

• GitHub issues
• Contact options listed on this GitHub profile

If you want to say thank you or/and support active development of pytest-dpg consider adding a GitHub Star to the project.

Contributing

Contributions are welcome! Please feel free to submit a Pull Request.

• Fork the repository
• Create your feature branch (git checkout -b feature/AmazingFeature)
• Commit your changes (git commit -m 'Add some AmazingFeature')
• Push to the branch (git push origin feature/AmazingFeature)
• Open a Pull Request

For a full list of all authors and contributors, see the contributors page.

License

This project is licensed under the GNU General Public License v3.

See LICENSE for more information.