Allow passing max number of collocates

Change-Id: Ida073dde970549974adff899891ae1f4b968b83a
diff --git a/test/runtests.jl b/test/runtests.jl
index f1e0388..66e3609 100644
--- a/test/runtests.jl
+++ b/test/runtests.jl
@@ -1,5 +1,6 @@
 using Artifacts
 using DerekoVecs
+using DataFrames
 using Test
 
 
@@ -48,6 +49,8 @@
             @test df.collocate[1] == "kann"
             @test df.ldaf[1] > 10
             @test df.ldaf[1] > df.ldaf[3]
+            @test nrow(get_collocates(wpd19, 3, 1)) == 1
+            @test nrow(get_collocates(wpd19, 3, 2)) == 2
         end
     end