MathPHP\Functions\PiecewiseTest::testInputFunctionsAreNotCallableException PHP Метод

    public function testInputFunctionsAreNotCallableException()
    {
        $intervals = [[-100, -2, false, true], [-2, 2], [2, 100, true, false]];
        $functions = [new Polynomial([-1, 0]), 2, new Polynomial([1, 0])];
        $this->setExpectedException('MathPHP\\Exception\\BadDataException');
        $piecewise = new Piecewise($intervals, $functions);
    }