diff --git a/String/test/AlternativeStringArrange.test.js b/String/test/AlternativeStringArrange.test.js
new file mode 100644
index 0000000000..fa8882f15b
--- /dev/null
+++ b/String/test/AlternativeStringArrange.test.js
@@ -0,0 +1,22 @@
+import { AlternativeStringArrange } from '../AlternativeStringArrange'
+
+test('AlternativeStringArrange(Agrtm, loih) -> Algorithm', () => {
+  const str1 = 'Agrtm'
+  const str2 = 'loih'
+  const res = AlternativeStringArrange(str1, str2)
+  expect(res).toEqual('Algorithm')
+})
+
+test('AlternativeStringArrange(JvSrp, aacit) -> JavaScript', () => {
+  const str1 = 'JvSrp'
+  const str2 = 'aacit'
+  const res = AlternativeStringArrange(str1, str2)
+  expect(res).toEqual('JavaScript')
+})
+
+test('AlternativeStringArrange(abc, def) -> adbecf', () => {
+  const str1 = 'abc'
+  const str2 = 'def'
+  const res = AlternativeStringArrange(str1, str2)
+  expect(res).toEqual('adbecf')
+})