diff --git a/src/algorithms/math/factorial/__test__/factorialRecursiveTCO.test.js b/src/algorithms/math/factorial/__test__/factorialRecursiveTCO.test.js
new file mode 100644
index 00000000..e379e6a0
--- /dev/null
+++ b/src/algorithms/math/factorial/__test__/factorialRecursiveTCO.test.js
@@ -0,0 +1,11 @@
+import factorialRecursiveTCO from '../factorialRecursiveTCO';
+
+describe('factorialRecursiveTCO', () => {
+  it('should calculate factorial', () => {
+    expect(factorialRecursiveTCO(0)).toBe(1);
+    expect(factorialRecursiveTCO(1)).toBe(1);
+    expect(factorialRecursiveTCO(5)).toBe(120);
+    expect(factorialRecursiveTCO(8)).toBe(40320);
+    expect(factorialRecursiveTCO(10)).toBe(3628800);
+  });
+});