add StableRNG

Author: lkdvos

test/testsuite/TestSuite.jl

@@ -12,6 +12,7 @@ using Test, TestExtras
 using MatrixAlgebraKit
 using MatrixAlgebraKit: diagview
 using LinearAlgebra: norm, istriu
+using Random, StableRNGs
 
 const tests = Dict()
 
@@ -27,8 +28,11 @@ end
 
 testargs_summary(args...) = string(args)
 
-instantiate_matrix(::Type{T}, size) where {T <: Number} = randn(T, size)
-instantiate_matrix(::Type{AT}, size) where {AT <: Array} = randn(eltype(AT), size)
+const rng = StableRNG(123)
+seed_rng!(seed) = Random.seed!(rng, seed)
+
+instantiate_matrix(::Type{T}, size) where {T <: Number} = randn(rng, T, size)
+instantiate_matrix(::Type{AT}, size) where {AT <: Array} = randn(rng, eltype(AT), size)
 
 precision(::Type{T}) where {T <: Number} = sqrt(eps(real(T)))
 precision(::Type{T}) where {T} = precision(eltype(T))