chore(jest): use function instead of jest.fn

Author: amen-souissi

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@decathlon/moon-testing",
-  "version": "0.0.2",
+  "version": "0.1.0",
   "description": "Moon testing utilities.",
   "main": "dist/index.js",
   "types": "dist/index.d.ts",

src/index.ts

@@ -36,16 +36,16 @@ export class AxiosClient {
 }
 
 export function mockAxiosClientConstructor(ClientFactory = AxiosClient): void {
-  Axios.create = jest.fn().mockImplementation(({ baseUrl }) => {
+  Axios.create = ({ baseUrl }) => {
     return new ClientFactory(baseUrl);
-  });
+  };
 }
 
 mockAxiosClientConstructor(AxiosClient);
 
 export const cancelToken = { cancel: () => jest.fn() };
 
-StaticAxios.CancelToken.source = jest.fn().mockReturnValue(cancelToken);
+StaticAxios.CancelToken.source = () => cancelToken;
 
 export { default as MoonClient } from "./moon-client";
 export * from "./moon-client";