diff --git a/src/algorithms/math/tribonacci/__test__/tribonacci.test.js b/src/algorithms/math/tribonacci/__test__/tribonacci.test.js
new file mode 100644
index 00000000..24bd87f0
--- /dev/null
+++ b/src/algorithms/math/tribonacci/__test__/tribonacci.test.js
@@ -0,0 +1,16 @@
+import tribonacci from '../tribonacci';
+
+describe('tribonacci', () => {
+  it('should calculate tribonacci correctly', () => {
+    expect(tribonacci(1)).toEqual([0]);
+    expect(tribonacci(2)).toEqual([0, 0]);
+    expect(tribonacci(3)).toEqual([0, 0, 1]);
+    expect(tribonacci(4)).toEqual([0, 0, 1, 1]);
+    expect(tribonacci(5)).toEqual([0, 0, 1, 1, 2]);
+    expect(tribonacci(6)).toEqual([0, 0, 1, 1, 2, 4]);
+    expect(tribonacci(7)).toEqual([0, 0, 1, 1, 2, 4, 7]);
+    expect(tribonacci(8)).toEqual([0, 0, 1, 1, 2, 4, 7, 13]);
+    expect(tribonacci(9)).toEqual([0, 0, 1, 1, 2, 4, 7, 13, 24]);
+    expect(tribonacci(10)).toEqual([0, 0, 1, 1, 2, 4, 7, 13, 24, 44]);
+  });
+});
diff --git a/src/algorithms/math/tribonacci/__test__/tribonacciNth.test.js b/src/algorithms/math/tribonacci/__test__/tribonacciNth.test.js
new file mode 100644
index 00000000..3f7cec7a
--- /dev/null
+++ b/src/algorithms/math/tribonacci/__test__/tribonacciNth.test.js
@@ -0,0 +1,17 @@
+import tribonacciNth from '../tribonacciNth';
+
+describe('tribonacciNth', () => {
+  it('should calculate tribonacci correctly', () => {
+    expect(tribonacciNth(1)).toBe(0);
+    expect(tribonacciNth(2)).toBe(1);
+    expect(tribonacciNth(3)).toBe(1);
+    expect(tribonacciNth(4)).toBe(2);
+    expect(tribonacciNth(5)).toBe(4);
+    expect(tribonacciNth(6)).toBe(7);
+    expect(tribonacciNth(7)).toBe(13);
+    expect(tribonacciNth(8)).toBe(24);
+    expect(tribonacciNth(20)).toBe(35890);
+    expect(tribonacciNth(30)).toBe(15902591);
+    expect(tribonacciNth(50)).toBe(3122171529233);
+  });
+});