Wrap TestPlan's in a module

Author: gaurav-arya

test/testplans.jl

@@ -1,3 +1,8 @@
+module TestPlans
+
+import AbstractFFTs
+using AbstractFFTs: Plan
+
 mutable struct TestPlan{T,N} <: Plan{T}
     region
     sz::NTuple{N,Int}
@@ -226,3 +231,5 @@ function Base.:*(p::InverseTestRPlan, x::AbstractArray)
 
     return y
 end
+
+end