diff --git a/test/runtests.jl b/test/runtests.jl
index 6a8f291..928aca4 100644
--- a/test/runtests.jl
+++ b/test/runtests.jl
@@ -189,6 +189,11 @@ using Test, Tables, TypedTables, DataFrames, CSV
     @test collect(keys(itr1))  == [1, 2, 3, 6]
     @test length(itr1) == 4
 
+    @test getindex(itr1, 1) == 1
+    @test_nowarn eltype(itr1)
+    @test_throws ErrorException itr1[4]
+    @test_throws ErrorException itr1[5]
+
     itr2 = MetidaBase.skipnonpositive(v1)
     for i in itr2
         @test MetidaBase.ispositive(i)
@@ -198,6 +203,14 @@ using Test, Tables, TypedTables, DataFrames, CSV
     @test collect(keys(itr2))  == [1, 2]
     @test length(itr2) == 2
 
+    @test getindex(itr2, 2) == 2
+    @test_nowarn eltype(itr2)
+    @test_throws ErrorException itr2[3]
+    @test_throws ErrorException itr2[4]
+    @test_throws ErrorException itr2[5]
+    @test_throws ErrorException itr2[6]
+    
+
 ############################################################################
  # OTHER
     @test MetidaBase.nonunique([1,2,3,3,4,5,6,6]) == [6,3]