feat: add respondWithRequestBody option for POST endpoints

examples/mock-api/v2/book.post.json

@@ -0,0 +1,8 @@
+{
+    "requestOptions": {},
+    "responseOptions": {
+        "delay_ms": 100,
+        "statusCode": 201,
+        "respondWithRequestBody": true
+    }
+}

src/serve-mocks.js

@@ -110,7 +110,7 @@ function serveMocks (mockDirectory, port, hostname) {
           const requestValidation = requestOptions.validation ? requestOptions.validation : {}
           const responseDelay = responseOptions.delay_ms ? responseOptions.delay_ms : 2000
           const statusCode = responseOptions.statusCode ? responseOptions.statusCode : 200
-          const response = endpointParams.response ? endpointParams.response : { success: true }
+          let response = endpointParams.response ? endpointParams.response : { success: true }
           console.log(`receiving POST request on ${apiPath} with body:`, req.body)
 
           setTimeout(() => {
@@ -128,6 +128,10 @@ function serveMocks (mockDirectory, port, hostname) {
               }
             }
 
+            if (responseOptions.respondWithRequestBody === true) {
+              response = req.body
+            }
+
             res.status(statusCode).send(response)
           }, responseDelay)
         })

src/serve-mocks.spec.js

@@ -60,6 +60,22 @@ describe('serve-mocks', () => {
     expect(response.body).toEqual(expectedResponse)
   })
 
+  it('should respond with request body if option is set', async () => {
+    expect.assertions(3) // number of expect calls in this test
+
+    const randomId = Math.floor(Math.random() * 100)
+    const requestBody = {
+      id: randomId,
+      author: 'Lorem Ipsum'
+    }
+
+    const response = await request.post('/v2/book').send(requestBody)
+
+    expect(response.status).toBe(201)
+    expect(response.headers['content-type']).toBe('application/json; charset=utf-8')
+    expect(response.body).toEqual(requestBody)
+  })
+
   it('should respond with 422 unprocessable entity when posting invalid user', async () => {
     expect.assertions(1) // number of expect calls in this test
 
@@ -109,4 +125,4 @@ describe('serve-mocks', () => {
     expect(response.status).toBe(200)
     expect(response.headers['content-type']).toBe('image/png')
   })
-})
+})