fix: update logic for unenrollment (#36)

src/data/services/lms/utils.test.js

@@ -4,6 +4,7 @@ import * as utils from './utils';
 
 jest.mock('query-string', () => ({
   stringifyUrl: jest.fn((url, options) => ({ url, options })),
+  stringify: jest.fn((data) => data),
 }));
 jest.mock('@edx/frontend-platform/auth', () => ({
   getAuthenticatedHttpClient: jest.fn(),
@@ -22,8 +23,15 @@ describe('lms service utils', () => {
     it('forwards arguments to authenticatedHttpClient().post', () => {
       const post = jest.fn((...args) => ({ post: args }));
       getAuthenticatedHttpClient.mockReturnValue({ post });
-      const args = ['some', 'args', 'for', 'the', 'test'];
-      expect(utils.post(...args)).toEqual(post(...args));
+      const url = 'some url';
+      const body = {
+        some: 'body',
+        for: 'the',
+        test: 'yay',
+      };
+      const expectedUrl = utils.post(url, body);
+      expect(queryString.stringify).toHaveBeenCalledWith(body);
+      expect(expectedUrl).toEqual(post(url, body));
     });
   });
   describe('stringifyUrl', () => {