Below tutorial will show how to start a demo Rest API on a JSON Server without writing a single piece of code. It will also show how you can test the API using Rest-Assured.
Steps:
1. Download Node.js on your machine. (https://nodejs.org/en/download/)
2. Install Node.js
3. Open Command Prompt and check that npm and node is installed
node -v
npm -v
4. Install JSON Server
npm install -g json-server
5. Create a db.json file with some data
{ "posts": [ { "id": 1, "title": "json-server-1", "author": "qascript" }, { "id": 2, "title": "json-server-2", "author": "qascript" } ], "comments": [ { "id": 1, "body": "test1", "postId": 1 }, { "id": 2, "body": "test2", "postId": 2 } ], "profile": { "name": "qascript" } }
6. Start JSON Server
json-server --watch db.json
7. Open http://localhost:3000/posts in any browser to view JSON response
8. Write the following code to test a POST request on the demo Rest API running on the localhost.
@Test public void PostRequestLocalJsonServer(){ String payload = "{\n" + " \"id\": 3,\n" + " \"title\": \"json-server-3\",\n" + " \"author\": \"qascript\"\n" + " }"; given().contentType(ContentType.JSON) .body(payload) .post("http://localhost:3000/posts") .then().statusCode(201) .log().body(); }
9. Again open the URL(https://localhost:3000/posts) and notice that a new post is added to the api.
Reference: https://github.com/typicode/json-server
Thank you!!1