Global Fields test case

Author: uttamukkoji

lib/stack/contentType/index.js

@@ -4,10 +4,15 @@ import {
   update,
   deleteEntity,
   fetch,
-  query
+  query,
+  upload,
+  parseData
 } from '../../entity'
 import { Entry } from './entry/index'
+import error from '../../core/contentstackError'
 
+import FormData from 'form-data'
+import { createReadStream } from 'fs'
 /**
  * Content type defines the structure or schema of a page or a section of your web or mobile property. To create content for your application, you are required to first create a content type, and then create entries using the content type. Read more about <a href='https://www.contentstack.com/docs/guide/content-types'>Content Types</a>.
  * @namespace ContentType
@@ -146,6 +151,40 @@ export function ContentType (http, data = {}) {
    * .then((contentTypes) => console.log(contentTypes))
    */
     this.query = query({ http: http, wrapperCollection: ContentTypeCollection })
+
+    /**
+   * @description The Import a content type call imports a content type into a stack.
+   * @memberof ContentType
+   * @func import
+   * @param {String} data.content_type path to file
+   * @example
+   * import * as contentstack from '@contentstack/management'
+   * const client = contentstack.client()
+   *
+   * const data = {
+   *  content_type: 'path/to/file.png',
+   * }
+   * client.stack({ api_key: 'api_key'}).contentType().import(data)
+   * .then((contentType) => console.log(contentType))
+   *
+   */
+    this.import = async function (data) {
+      try {
+        const response = await upload({
+          http: http,
+          urlPath: `${this.urlPath}/import`,
+          stackHeaders: this.stackHeaders,
+          formData: createFormData(data)
+        })
+        if (response.data) {
+          return new this.constructor(http, parseData(response, this.stackHeaders))
+        } else {
+          throw error(response)
+        }
+      } catch (err) {
+        throw error(err)
+      }
+    }
   }
   return this
 }
@@ -157,3 +196,10 @@ export function ContentTypeCollection (http, data) {
   })
   return contentTypeCollection
 }
+
+function createFormData (data) {
+  const formData = new FormData()
+  const uploadStream = createReadStream(data.content_type)
+  formData.append('content_type', uploadStream)
+  return formData
+}

lib/stack/globalField/index.js

@@ -141,7 +141,7 @@ export function GlobalField (http, data = {}) {
 }
 
 export function GlobalFieldCollection (http, data) {
-  const obj = cloneDeep(data.global_fields)
+  const obj = cloneDeep(data.global_fields) || []
   const globalFieldCollection = obj.map((userdata) => {
     return new GlobalField(http, { global_field: userdata, stackHeaders: data.stackHeaders })
   })