diff --git a/matrix.test.js b/matrix.test.js
index 04ffa85..076f7b9 100644
--- a/matrix.test.js
+++ b/matrix.test.js
@@ -16,3 +16,20 @@ test('adding scalar to matrix', () => {
     ]
   });
 });
+
+test('product test',()=>{
+  let m = new Matrix(1, 3);
+  m.data[0] = [1,2,3];
+  let n = new Matrix(3, 1);
+  n.data[0] = [1];
+  n.data[1] = [2];
+  n.data[2] = [3];
+  let mn = Matrix.multiply(m, n);
+  expect(mn).toEqual({
+    rows: 1,
+    cols: 1,
+    data: [
+      [14]
+    ]
+  });
+});