fix(cloudflare-auth-access-provider): broken tests fix

Signed-off-by: Jason Diaz G. <jason.rene.diaz.gonzalez@ericsson.com>

plugins/auth-backend-module-cloudflare-access-provider/src/helpers.ts

@@ -40,8 +40,10 @@ export class AuthHelper {
     options?: { cache?: CacheService },
   ): AuthHelper {
     const teamName = config.getString('teamName');
-    const customHeader = config.getString('customHeader');
-    const customCookieAuthName = config.getString('customCookieAuthName');
+    const customHeader = config.getOptionalString('customHeader');
+    const customCookieAuthName = config.getOptionalString(
+      'customCookieAuthName',
+    );
     const serviceTokens = (
       config.getOptionalConfigArray('serviceTokens') ?? []
     )?.map(cfg => {
@@ -55,7 +57,14 @@ export class AuthHelper {
       new URL(`https://${teamName}.cloudflareaccess.com/cdn-cgi/access/certs`),
     );
 
-    return new AuthHelper(teamName, serviceTokens, keySet, options?.cache, customHeader, customCookieAuthName);
+    return new AuthHelper(
+      teamName,
+      serviceTokens,
+      keySet,
+      options?.cache,
+      customHeader,
+      customCookieAuthName,
+    );
   }
 
   private constructor(
@@ -65,7 +74,7 @@ export class AuthHelper {
     private readonly cache?: CacheService,
     private readonly customHeader?: string,
     private readonly customCookieAuthName?: string,
-  ) { }
+  ) {}
 
   async authenticate(req: express.Request): Promise<CloudflareAccessResult> {
     // JWTs generated by Access are available in a request header as
@@ -79,7 +88,9 @@ export class AuthHelper {
       // can be used.
       throw new AuthenticationError(
         `Missing ${this.customHeader || CF_JWT_HEADER} and 
-          ${this.customCookieAuthName || COOKIE_AUTH_NAME} from Cloudflare Access`,
+          ${
+            this.customCookieAuthName || COOKIE_AUTH_NAME
+          } from Cloudflare Access`,
       );
     }
 
@@ -161,7 +172,10 @@ export class AuthHelper {
     const headers = new Headers();
     // set both headers just the way inbound responses are set
     headers.set(this.customHeader || CF_JWT_HEADER, jwt);
-    headers.set('cookie', `${this.customCookieAuthName || COOKIE_AUTH_NAME}=${jwt}`);
+    headers.set(
+      'cookie',
+      `${this.customCookieAuthName || COOKIE_AUTH_NAME}=${jwt}`,
+    );
     try {
       const res = await fetch(
         `https://${this.teamName}.cloudflareaccess.com/cdn-cgi/access/get-identity`,