diff --git a/Conversions/test/LowerCaseConversion.test.js b/Conversions/test/LowerCaseConversion.test.js
new file mode 100644
index 000000000..1b84f2c0d
--- /dev/null
+++ b/Conversions/test/LowerCaseConversion.test.js
@@ -0,0 +1,26 @@
+import { LowerCaseConversion } from '../LowerCaseConversion'
+
+test('The LowerCaseConversion of ApoLO is apolo', () => {
+  const res = LowerCaseConversion('ApoLO')
+  expect(res).toBe('apolo')
+})
+
+test('The LowerCaseConversion of WEB is web', () => {
+  const res = LowerCaseConversion('WEB')
+  expect(res).toBe('web')
+})
+
+test('The LowerCaseConversion of EaRTh is earth', () => {
+  const res = LowerCaseConversion('EaRTh')
+  expect(res).toBe('earth')
+})
+
+test('The LowerCaseConversion of TiGER is tiger', () => {
+  const res = LowerCaseConversion('TiGER')
+  expect(res).toBe('tiger')
+})
+
+test('The LowerCaseConversion of Cricket is cricket', () => {
+  const res = LowerCaseConversion('Cricket')
+  expect(res).toBe('cricket')
+})