Test for iteratorsize

Author: jishnub

test/runtests.jl

@@ -408,6 +408,7 @@ end
         y = IdOffsetRange(x)
         @test y[2] == x[2]
         @test first(x,2) == first(y,2)
+        @test Base.IteratorSize(y) == Base.IteratorSize(x)
         stry = repr(y)
         strx = repr(x)
         @test contains(stry, "values=$strx")