Fix: support null body in examples responses

Author: joolfe

lib/index.js

@@ -542,7 +542,7 @@ function parseExamples (bodies, language) {
 function safeSampleParse (body, name, language) {
   if (language === 'json') {
     const errors = []
-    const parsedBody = jsonc.parse((body.trim().length === 0) ? '{}' : body, errors)
+    const parsedBody = jsonc.parse((body === null || body.trim().length === 0) ? '{}' : body, errors)
     if (errors.length > 0) {
       throw new Error('Error parsing response example "' + name + '"')
     }

test/resources/input/v2/ResponsesEmpty.json

@@ -159,6 +159,74 @@
 					],
 					"cookie": [],
 					"body": ""
+				},
+				{
+					"name": "Create new User automatic id (null)",
+					"originalRequest": {
+						"method": "POST",
+						"header": [],
+						"body": {
+							"mode": "raw",
+							"raw": "{\n    \"createdAt\": \"2021-06-04T15:50:38.568Z\",\n    \"name\": \"Carol\",\n    \"avatar\": \"https://cdn.fakercloud.com/avatars/nelsonjoyce_128.jpg\"\n}",
+							"options": {
+								"raw": {
+									"language": "json"
+								}
+							}
+						},
+						"url": "https://60bb37ab42e1d000176206c3.mockapi.io/api/v1/users"
+					},
+					"status": "Created",
+					"code": 201,
+					"_postman_previewlanguage": "json",
+					"header": [
+						{
+							"key": "Server",
+							"value": "Cowboy"
+						},
+						{
+							"key": "Connection",
+							"value": "keep-alive"
+						},
+						{
+							"key": "X-Powered-By",
+							"value": "Express"
+						},
+						{
+							"key": "Access-Control-Allow-Origin",
+							"value": "*"
+						},
+						{
+							"key": "Access-Control-Allow-Methods",
+							"value": "GET,PUT,POST,DELETE,OPTIONS"
+						},
+						{
+							"key": "Access-Control-Allow-Headers",
+							"value": "X-Requested-With,Content-Type,Cache-Control,access_token"
+						},
+						{
+							"key": "Content-Type",
+							"value": "application/json"
+						},
+						{
+							"key": "Content-Length",
+							"value": "131"
+						},
+						{
+							"key": "Vary",
+							"value": "Accept-Encoding"
+						},
+						{
+							"key": "Date",
+							"value": "Sat, 05 Jun 2021 08:49:09 GMT"
+						},
+						{
+							"key": "Via",
+							"value": "1.1 vegur"
+						}
+					],
+					"cookie": [],
+					"body": null
 				}
 			]
 		},

test/resources/input/v21/ResponsesEmpty.json

@@ -198,6 +198,87 @@
 					],
 					"cookie": [],
 					"body": ""
+				},
+				{
+					"name": "Create new User automatic id (null)",
+					"originalRequest": {
+						"method": "POST",
+						"header": [],
+						"body": {
+							"mode": "raw",
+							"raw": "{\n    \"createdAt\": \"2021-06-04T15:50:38.568Z\",\n    \"name\": \"Carol\",\n    \"avatar\": \"https://cdn.fakercloud.com/avatars/nelsonjoyce_128.jpg\"\n}",
+							"options": {
+								"raw": {
+									"language": "json"
+								}
+							}
+						},
+						"url": {
+							"raw": "https://60bb37ab42e1d000176206c3.mockapi.io/api/v1/users",
+							"protocol": "https",
+							"host": [
+								"60bb37ab42e1d000176206c3",
+								"mockapi",
+								"io"
+							],
+							"path": [
+								"api",
+								"v1",
+								"users"
+							]
+						}
+					},
+					"status": "Created",
+					"code": 201,
+					"_postman_previewlanguage": "json",
+					"header": [
+						{
+							"key": "Server",
+							"value": "Cowboy"
+						},
+						{
+							"key": "Connection",
+							"value": "keep-alive"
+						},
+						{
+							"key": "X-Powered-By",
+							"value": "Express"
+						},
+						{
+							"key": "Access-Control-Allow-Origin",
+							"value": "*"
+						},
+						{
+							"key": "Access-Control-Allow-Methods",
+							"value": "GET,PUT,POST,DELETE,OPTIONS"
+						},
+						{
+							"key": "Access-Control-Allow-Headers",
+							"value": "X-Requested-With,Content-Type,Cache-Control,access_token"
+						},
+						{
+							"key": "Content-Type",
+							"value": "application/json"
+						},
+						{
+							"key": "Content-Length",
+							"value": "131"
+						},
+						{
+							"key": "Vary",
+							"value": "Accept-Encoding"
+						},
+						{
+							"key": "Date",
+							"value": "Sat, 05 Jun 2021 08:49:09 GMT"
+						},
+						{
+							"key": "Via",
+							"value": "1.1 vegur"
+						}
+					],
+					"cookie": [],
+					"body": null
 				}
 			]
 		},

test/resources/output/ResponsesEmpty.yml

@@ -85,6 +85,9 @@ paths:
                 example-1:
                   summary: Create new User automatic id
                   value: {}
+                example-2:
+                  summary: Create new User automatic id (null)
+                  value: {}
   /users/{user_id}:
     get:
       tags: