Chapter 10: Testing Your Serverless Application

1. Write a unit test for the UpdateMovie Lambda function.
   Answer:

package main

import (
  "testing"

  "github.com/stretchr/testify/assert"

  "github.com/aws/aws-lambda-go/events"
)

func TestUpdate_InvalidPayLoad(t *testing.T) {
  input := events.APIGatewayProxyRequest{
    Body: "{'name': 'avengers'}",
  }
  expected := events.APIGatewayProxyResponse{
    StatusCode: 400,
    Body: "Invalid payload",
  }
  response, _ := update(input)
  assert.Equal(t, expected, response)
}

func TestUpdate_ValidPayload(t *testing.T) {
  input := events.APIGatewayProxyRequest{
    Body: "{\"id\":\"40\", \"name\":\"Thor\", \"description\":\"Marvel movie\", \"cover\":\"poster url\"}",
  }
  expected := events.APIGatewayProxyResponse...