OpenGL context and testing with catch2

BePie

I'am trying to test my class that uses QOpenGLTexture but it cannot use QOpenGLTexture becouse there is no OpenGL context. I tried this:


// gui app
    char *dummyArgv[] = {"dummy program name", NULL};
    int dummyArgc = sizeof(dummyArgv) / sizeof(char*) - 1;
    QGuiApplication app(dummyArgc, dummyArgv);

// try 1 
    const auto screens = QGuiApplication::screens();
    REQUIRE(screens.size() > 0);
    QOpenGLContext context;
    context.setScreen(screens[0]);
    REQUIRE(context.create());
    REQUIRE(context.isValid());

// try 2
    QQmlApplicationEngine engine;
    engine.load(QUrl(QStringLiteral("qrc:/window.qml")));

// try 3
    QQuickView *view = new QQuickView;
    view->setSource(QUrl(QStringLiteral("qrc:/rect.qml")));
    view->show();

but I get

Requires a valid current OpenGL context.
Texture has not been created

all the time.
Is there a valid way to create a OpenGL context for QOpenGL-classes without running event loop?