Kivy unittesting

README.md

Tree

/
  /main.py
  /test
    test_app.py

Run tests

pytest

Run coverage

coverage -m pytest

main.py

from kivy.app import App
from kivy.uix.button import Button
from kivy.uix.label import Label
from kivy.uix.boxlayout import BoxLayout



class MyBox(BoxLayout):
    def __init__(self, **kwargs):
        super().__init__(**kwargs)
        self.btn1 = Button(
            text="Btn 1",
            on_press=self.btn_press,
            on_release=self.btn_release
        )
        self.btn2 = Button(
            text="Btn 2",
            on_press=self.btn_press,
            on_release=self.btn_release
        )
        
        self.lbl = Label()
        self.lbl.text = "Label"

        self.add_widget(self.btn1)
        self.add_widget(self.btn2)
        self.add_widget(self.lbl)

    def btn_press(self, instance):
        self.lbl.text = f'apertou {instance.text.lower()}'

    def btn_release(self, instance):
        self.lbl.text = f'soltou {instance.text.lower()}'


class TestApp(App):
    def build(self):
        return MyBox()


if __name__ == "__main__":
    TestApp().run()

test_box.py

from contextlib import contextmanager
from kivy.base import EventLoop
from kivy.tests.common import GraphicUnitTest, UnitTestTouch
from main import MyBox


@contextmanager
def touch(btn):
    t = UnitTestTouch(*btn.center)
    t.touch_down()
    yield
    t.touch_up()


@contextmanager
def window_loop():
    EventLoop.ensure_window()
    yield EventLoop.window.children[0]


class BoxGraphicUnitTest(GraphicUnitTest):
    def setUp(self, *args, **kwargs):
        super().setUp(*args, **kwargs)
        self.box = MyBox()
        self.render(self.box)


class TestMyBox(BoxGraphicUnitTest):
    box = MyBox()

    def test_prees_btn1(self):
        with touch(self.box.btn1):
            assert self.box.lbl.text == 'apertou btn 1'
        assert self.box.lbl.text == 'soltou btn 1'

    def test_prees_btn2(self):
        with touch(self.box.btn2):
            assert self.box.lbl.text == 'apertou btn 2'
        assert self.box.lbl.text == 'soltou btn 2'

    def test_window_components(self):
        with window_loop() as window:
            assert window.children[0] == self.box.lbl
            assert window.children[1] == self.box.btn2
            assert window.children[2] == self.box.btn1