<filename>test/test_base_app.py
from qtstrap import *
import pytest


class MainWindow(BaseMainWindow):
    def __init__(self, parent=None):
        super().__init__(parent=parent)
        self.button = QPushButton('Click me!', clicked=lambda: self.label.setText('clicked'))
        self.label = QLabel('^^^^^^^')

        with CVBoxLayout(self) as layout:
            layout.add(self.button)
            layout.add(self.label)


class Application(BaseApplication):
    def __init__(self) -> None:
        super().__init__()

        self.window = MainWindow()


@pytest.fixture(scope="session")
def qapp():
    yield Application()


def test_base_application_startup(qtbot, qapp):
    qtbot.addWidget(qapp.window)
    assert qapp.window.label.text() == '^^^^^^^'

    qtbot.mouseClick(qapp.window.button, QtCore.Qt.LeftButton)
    assert qapp.window.label.text() == 'clicked'
<filename>test/test_base_app.py
from qtstrap import *
import pytest


class MainWindow(BaseMainWindow):
    def __init__(self, parent=None):
        super().__init__(parent=parent)
        self.button = QPushButton('Click me!', clicked=lambda: self.label.setText('clicked'))
        self.label = QLabel('^^^^^^^')

        with CVBoxLayout(self) as layout:
            layout.add(self.button)
            layout.add(self.label)


class Application(BaseApplication):
    def __init__(self) -> None:
        super().__init__()

        self.window = MainWindow()


@pytest.fixture(scope="session")
def qapp():
    yield Application()


def test_base_application_startup(qtbot, qapp):
    qtbot.addWidget(qapp.window)
    assert qapp.window.label.text() == '^^^^^^^'

    qtbot.mouseClick(qapp.window.button, QtCore.Qt.LeftButton)
    assert qapp.window.label.text() == 'clicked'