def METHOD_NAME(self) -> None:
    # Vector
    v = numpy.arange(2)
    self.assertExpression(self.x + v, (2,))
    self.assertExpression(v + self.x, (2,))
    self.assertExpression(self.x - v, (2,))
    self.assertExpression(v - self.x, (2,))
    self.assertExpression(self.x <= v, (2,))
    self.assertExpression(v <= self.x, (2,))
    self.assertExpression(self.x == v, (2,))
    self.assertExpression(v == self.x, (2,))
    # Matrix
    A = numpy.arange(8).reshape((4, 2))
    self.assertExpression(A @ self.x, (4,))
    # PSD inequalities.
    A = numpy.ones((2, 2))
    self.assertExpression(A << self.A, (2, 2))
    self.assertExpression(A >> self.A, (2, 2))