Implements retrieve wait list request endpoint for resource

src/resources/wait-list.test.ts

@@ -79,7 +79,30 @@ it('can create a new wait list request for a given client', async () => {
 });
 
 it('can retrieve a clients matching wait list request', async () => {
-  //
+  const resource = new WaitList(mockAxios);
+
+  await resource
+    .belonging(1)
+    .include('preferences')
+    .find(2);
+
+  expect(mockAxios.get).toHaveBeenCalledTimes(1);
+  expect(mockAxios.get).toHaveBeenCalledWith('clients/1/requests/2', {
+    params: {
+      include: 'preferences',
+    },
+  });
+});
+
+it('can retrieve a clients matching wait list request without including preferences', async () => {
+  const resource = new WaitList(mockAxios);
+
+  await resource
+    .belonging(1)
+    .find(2);
+
+  expect(mockAxios.get).toHaveBeenCalledTimes(1);
+  expect(mockAxios.get).toHaveBeenCalledWith('clients/1/requests/2', { params: {} });
 });
 
 it('can update a clients wait list request', async () => {

src/resources/wait-list.ts

@@ -2,7 +2,7 @@ import { AxiosInstance } from 'axios';
 
 import { WaitListFilter } from '../types/filters';
 import { AttendeeModel, PreferenceModel } from '../types/models';
-import { WaitListUrlParameters } from '../types/parameters';
+import { IncludableParameters, WaitListUrlParameters } from '../types/parameters';
 import { WaitListResource } from '../types/resources';
 
 export default class WaitList implements WaitListResource {
@@ -33,7 +33,14 @@ export default class WaitList implements WaitListResource {
   }
 
   public async find(list: number | string): Promise<any> {
-    //
+    const params: IncludableParameters = {};
+    const { client, include } = this.parameters;
+
+    if (include) {
+      params.include = include;
+    }
+
+    return await this.client.get(`clients/${client}/requests/${list}`, { params });
   }
 
   public for(attendee: AttendeeModel): this {

src/types/parameters.d.ts

@@ -58,6 +58,10 @@ export interface AttendeeParameters {
   work_phone?: string;
 }
 
+export interface IncludableParameters {
+  include?: string;
+}
+
 export interface LocationDetailParameters {
   address?: string;
   city?: string;