Added test for copy (forgot to add to PR)

Author: Andy Ferris

test/abstractarray.jl

@@ -67,7 +67,11 @@
         @test @inferred(reshape([1,2,3,4], Size(2,2)))::SizedArray{Tuple{2,2},Int,2,1} == [1 3; 2 4]
 
         @test @inferred(vec(SMatrix{2, 2}([1 2; 3 4])))::SVector{4,Int} == [1, 3, 2, 4]
-        @test @inferred(copy(SMatrix{2, 2}([1 2; 3 4]))) == [1 2; 3 4]
+    end
+
+    @testset "copy" begin        
+        @test @inferred(copy(SMatrix{2, 2}([1 2; 3 4]))) === @SMatrix [1 2; 3 4]
+        @test @inferred(copy(MMatrix{2, 2}([1 2; 3 4])))::MMatrix === [1 2; 3 4]
     end
 
     @testset "full" begin