diff --git a/test/Project.toml b/test/Project.toml
index a8cc30a..42dedd6 100644
--- a/test/Project.toml
+++ b/test/Project.toml
@@ -1,7 +1,9 @@
 [deps]
 Aqua = "4c88cf16-eb10-579e-8560-4a9242c79595"
 Graphs = "86223c79-3864-5bf0-83f7-82e725a168b6"
+GraphsInterfaceChecker = "3bef136c-15ff-4091-acbb-1a4aafe67608"
 JET = "c3a54625-cd67-489e-a8e7-0a5a0ff4e31b"
+LEMONGraphs = "14b1564f-c77f-4800-9e89-efd961faef7c"
 Pkg = "44cfe95a-1eb2-52ea-b672-e2afdf69b78f"
 Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 TestItemRunner = "f8b46487-2199-4994-9208-9a1283c18c0a"
diff --git a/test/test_interface_checker.jl b/test/test_interface_checker.jl
new file mode 100644
index 0000000..3434885
--- /dev/null
+++ b/test/test_interface_checker.jl
@@ -0,0 +1,38 @@
+using Test
+using Graphs
+using LEMONGraphs
+using GraphsInterfaceChecker
+
+# helper: make a small usable LEMON graph 
+function make_small_undirected()
+    # Example: if your package exposes LEMONGraph(n)
+    g = LEMONGraph(5)
+    add_edge!(g, 1, 2)
+    add_edge!(g, 2, 3)
+    return g
+end
+
+function make_small_directed()
+    gd = LEMONDiGraph(5)
+    add_edge!(gd, 1, 2)
+    add_edge!(gd, 2, 3)
+    return gd
+end
+
+@testset "LEMONGraphs interface checks" begin
+    @testset "Undirected LEMONGraph" begin
+        g = make_small_undirected()
+        check_graph_interface(g)        
+        if hasmethod(check_mutable_graph_interface, Tuple{typeof(g)})
+            check_mutable_graph_interface(g)
+        end
+    end
+
+    @testset "Directed LEMONGraph" begin
+        gd = make_small_directed()
+        check_digraph_interface(gd)     
+        if hasmethod(check_mutable_graph_interface, Tuple{typeof(gd)})
+            check_mutable_graph_interface(gd)
+        end
+    end
+end