def test_basis_constant_product(self):
constant = Constant()
monomial = Monomial()
fourier = Fourier()
bspline = BSpline(n_basis=5, order=3)
self.assertEqual(constant.basis_of_product(monomial), monomial)
self.assertEqual(constant.basis_of_product(fourier), fourier)
self.assertEqual(constant.basis_of_product(bspline), bspline)
self.assertEqual(monomial.basis_of_product(constant), monomial)
self.assertEqual(fourier.basis_of_product(constant), fourier)
self.assertEqual(bspline.basis_of_product(constant), bspline)
def test_basis_monomial_product(self):
monomial = Monomial(n_basis=5)
monomial2 = Monomial(n_basis=3)
prod = Monomial(n_basis=8)
self.assertEqual(monomial.basis_of_product(monomial2), prod)