diff --git a/test/matrices/fiedler.jl b/test/matrices/fiedler.jl
new file mode 100644
index 0000000..854fca9
--- /dev/null
+++ b/test/matrices/fiedler.jl
@@ -0,0 +1,15 @@
+# constructors
+@test allequal([
+    Fiedler(5),
+    Fiedler{Int}(5),
+    Fiedler([1:5;]),
+])
+
+# linear algebra functions
+test_linearalgrbra_functions(Fiedler.(1:5))
+
+# eltype
+@test test_matrix_elements(Fiedler{Int32}(5))
+
+# content
+@test Fiedler(5) ≈ [0 1 2 3 4; 1 0 1 2 3; 2 1 0 1 2; 3 2 1 0 1; 4 3 2 1 0]