chore(refactor): split up and add tests for core functionality

src/auth/spec/mockResponses.ts

@@ -1,2 +1,24 @@
+import { SasAuthResponse } from '@sasjs/utils/types'
+
 export const mockLoginAuthoriseRequiredResponse = `<form id="application_authorization" action="/SASLogon/oauth/authorize" method="POST"><input type="hidden" name="X-Uaa-Csrf" value="2nfuxIn6WaOURWL7tzTXCe"/>`
 export const mockLoginSuccessResponse = `You have signed in`
+
+export const mockAuthResponse: SasAuthResponse = {
+  access_token: 'acc355',
+  refresh_token: 'r3fr35h',
+  id_token: 'id',
+  token_type: 'bearer',
+  expires_in: new Date().valueOf(),
+  scope: 'default',
+  jti: 'test'
+}
+
+export const generateToken = (timeToLiveSeconds: number): string => {
+  const exp =
+    new Date(new Date().getTime() + timeToLiveSeconds * 1000).getTime() / 1000
+  const header = 'eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9'
+  const payload = Buffer.from(JSON.stringify({ exp })).toString('base64')
+  const signature = '4-iaDojEVl0pJQMjrbM1EzUIfAZgsbK_kgnVyVxFSVo'
+  const token = `${header}.${payload}.${signature}`
+  return token
+}