diff --git a/test/runtests.jl b/test/runtests.jl
index e46931e..c2834ad 100644
--- a/test/runtests.jl
+++ b/test/runtests.jl
@@ -1,6 +1,27 @@
+using Artifacts
 using DerekoVecs
 using Test
 
+
 @testset "DerekoVecs.jl" begin
-    # Write your tests here.
+
+    wpd19 = load(joinpath(artifact"wpd19_10000", "wpd19_10000", "wpd19_10000.vecs"))
+
+    @testset "DerekoVecs.jl: loading" begin
+        @test wpd19.m == 200;
+        @test wpd19.n >= 10000;
+    end
+
+    @testset "DerekoVecs.jl: similarities" begin
+        @test isapprox(DerekoVecs.cos_sim(wpd19, "war", "war"), 1)
+        @test cos_sim(wpd19, "wurden", "war") == cos_sim(wpd19, "war", "wurden")
+        @test cos_sim(wpd19, "wurde", "wurden") > cos_sim(wpd19, "wurde", "ich")
+        @test cos_sim(wpd19, "wurden", "war") == cos_sim(wpd19, wpd19, "war", "wurden")
+    end
+
+    @testset "DerekoVecs.jl: knn" begin
+        @test "dieser" in knn(wpd19, "der", 3)
+        @test "wurden" in knn(wpd19, "wurde", 3)
+    end
+
 end