update test

Author: fredrikekre

test/linalg/diagonal.jl

@@ -312,7 +312,7 @@ end
 end
 
 # allow construct from range
-@test Diagonal(linspace(1,3,3)) ≈ Diagonal([1.,2.,3.])
+@test all(Diagonal(linspace(1,3,3)) .== Diagonal([1.0,2.0,3.0]))
 
 # Issue 12803
 for t in (Float32, Float64, Int, Complex{Float64}, Rational{Int})