diff --git a/ho_basis_test.jl b/ho_basis_test.jl
new file mode 100644
index 0000000..95363cb
--- /dev/null
+++ b/ho_basis_test.jl
@@ -0,0 +1,16 @@
+using LinearAlgebra
+include("ho_basis.jl")
+
+l = 0
+V0 = -10
+R = 1
+n_max = 10
+
+ns = collect(0:n_max)
+ls = fill(l, n_max + 1)
+
+T = sp_T_matrix(ns, ls)
+V = V0 .* V_Gaussian.(R, l, ns, transpose(ns))
+H = T + V
+
+eigvals(H)
\ No newline at end of file