Signal does not throw an exception when an incorrect argument is used

import sys

from PySide2.QtCore import QCoreApplication, QObject, Signal, QTimer


class Foo(QObject):
    str_sig = Signal(str)
    int_sig = Signal(int)


class Bar(QObject):
    def bar_slot(self, val):
        print(val)


if __name__ == "__main__":
    app = QCoreApplication(sys.argv)

    foo = Foo()

    bar = Bar()

    foo.str_sig.connect(bar.bar_slot)
    foo.int_sig.connect(bar.bar_slot)

    foo.str_sig.emit(10)
    foo.int_sig.emit("fff")

    QTimer.singleShot(1000, QCoreApplication.quit)

    sys.exit(app.exec_())

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