Fix tests!

Author: lkdvos

test/setup.jl

@@ -129,11 +129,11 @@ function transverse_field_ising(::Type{T}=ComplexF64; g=1.0, L=Inf) where {T<:Nu
 
     if L == Inf
         lattice = PeriodicArray([ℂ^2])
-        H₁ = InfiniteMPOHamiltonian(lattice, i => g * X for i in 1:1)
+        H₁ = InfiniteMPOHamiltonian(lattice, i => -g * X for i in 1:1)
         H₂ = InfiniteMPOHamiltonian(lattice, (i, i + 1) => -ZZ for i in 1:1)
     else
         lattice = fill(ℂ^2, L)
-        H₁ = FiniteMPOHamiltonian(lattice, i => g * X for i in 1:L)
+        H₁ = FiniteMPOHamiltonian(lattice, i => -g * X for i in 1:L)
         H₂ = FiniteMPOHamiltonian(lattice, (i, i + 1) => -ZZ for i in 1:(L - 1))
     end
     return H₁ + H₂

test/states.jl

@@ -168,18 +168,18 @@ end
     @test 9 * 9 ≈ norm(window)^2
     normalize!(window)
 
-    e1 = expectation_value(window, (1, 2) => O)
+    e1 = expectation_value(window, (2, 3) => O)
 
     window, envs, _ = find_groundstate(window, ham, DMRG(; verbosity=0))
 
-    e2 = expectation_value(window, (1, 2) => O)
+    e2 = expectation_value(window, (2, 3) => O)
 
     @test real(e2) ≤ real(e1)
 
     window, envs = timestep(window, ham, 0.1, 0.0, TDVP2(; trscheme=truncdim(20)), envs)
     window, envs = timestep(window, ham, 0.1, 0.0, TDVP(), envs)
 
-    e3 = expectation_value(window, (1, 2) => O)
+    e3 = expectation_value(window, (2, 3) => O)
 
     @test e2 ≈ e3 atol = 1e-4
 end