From 0540240a311b953c2ffa5ab427aeae7532a0d515 Mon Sep 17 00:00:00 2001
From: Ian Flournoy <ian@flournoy.us>
Date: Mon, 27 Apr 2020 21:04:09 -0400
Subject: [PATCH] Add unit coverage for parrableIdSystem getId callback

---
 test/spec/modules/parrableIdSystem_spec.js | 66 +++++++++++++++++++---
 1 file changed, 57 insertions(+), 9 deletions(-)

diff --git a/test/spec/modules/parrableIdSystem_spec.js b/test/spec/modules/parrableIdSystem_spec.js
index 93415126a0a..9321c342678 100644
--- a/test/spec/modules/parrableIdSystem_spec.js
+++ b/test/spec/modules/parrableIdSystem_spec.js
@@ -1,15 +1,19 @@
 import { expect } from 'chai';
-import {config} from 'src/config.js';
+import { config } from 'src/config.js';
 import * as utils from 'src/utils.js';
 import { init, requestBidsHook, setSubmoduleRegistry } from 'modules/userId/index.js';
 import { parrableIdSubmodule } from 'modules/parrableIdSystem.js';
 import { newStorageManager } from 'src/storageManager.js';
+import { getRefererInfo } from 'src/refererDetection.js';
+
+import { server } from 'test/mocks/xhr';
 
 const storage = newStorageManager();
 
 const EXPIRED_COOKIE_DATE = 'Thu, 01 Jan 1970 00:00:01 GMT';
 const P_COOKIE_NAME = '_parrable_eid';
-const P_COOKIE_VALUE = '01.1563917337.test-eid';
+const P_COOKIE_EID = '01.1563917337.test-eid';
+const P_XHR_EID = '01.1588030911.test-new-eid'
 const P_CONFIG_MOCK = {
   name: 'parrableId',
   params: {
@@ -31,6 +35,7 @@ describe('Parrable ID System', function() {
       }
     }
   }
+
   function getAdUnitMock(code = 'adUnit-code') {
     return {
       code,
@@ -46,33 +51,76 @@ describe('Parrable ID System', function() {
     };
   }
 
+  describe('parrableIdSystem.getId()', function() {
+    let submoduleCallback;
+    let callbackSpy = sinon.spy();
+
+    beforeEach(function() {
+      submoduleCallback = parrableIdSubmodule.getId(
+        P_CONFIG_MOCK.params,
+        null,
+        P_COOKIE_EID
+      ).callback;
+      callbackSpy.reset();
+    });
+
+    it('returns a callback used to refresh the ID', function() {
+      expect(submoduleCallback).to.be.a('function');
+    });
+
+    it('invoked callback creates an xhr request to Parrable with id and telemetry', function() {
+      submoduleCallback(callbackSpy);
+
+      let request = server.requests[0];
+      let queryParams = utils.parseQS(request.url.split('?')[1]);
+      let data = JSON.parse(atob(queryParams.data));
+
+      expect(request.url).to.contain('h.parrable.com/prebid');
+      expect(data).to.deep.equal({
+        eid: P_COOKIE_EID,
+        trackers: P_CONFIG_MOCK.params.partner.split(','),
+        url: getRefererInfo().referer
+      });
+    });
+
+    it('callback responds with updated eid from Parrable backend', function() {
+      submoduleCallback(callbackSpy);
+      server.requests[0].respond(200,
+        { 'Content-Type': 'text/plain' },
+        JSON.stringify({ eid: P_XHR_EID })
+      );
+      expect(callbackSpy.calledWith(P_XHR_EID)).to.be.true;
+    });
+  });
+
   describe('Parrable ID in Bid Request', function() {
     let adUnits;
 
     beforeEach(function() {
       adUnits = [getAdUnitMock()];
-    });
-
-    it('should append parrableid to bid request', function(done) {
       // simulate existing browser local storage values
       storage.setCookie(
         P_COOKIE_NAME,
-        P_COOKIE_VALUE,
+        P_COOKIE_EID,
         (new Date(Date.now() + 5000).toUTCString())
       );
-
       setSubmoduleRegistry([parrableIdSubmodule]);
       init(config);
       config.setConfig(getConfigMock());
+    });
+
+    afterEach(function() {
+      storage.setCookie(P_COOKIE_NAME, '', EXPIRED_COOKIE_DATE);
+    });
 
+    it('provides the parrableid in the bid request', function(done) {
       requestBidsHook(function() {
         adUnits.forEach(unit => {
           unit.bids.forEach(bid => {
             expect(bid).to.have.deep.nested.property('userId.parrableid');
-            expect(bid.userId.parrableid).to.equal(P_COOKIE_VALUE);
+            expect(bid.userId.parrableid).to.equal(P_COOKIE_EID);
           });
         });
-        storage.setCookie(P_COOKIE_NAME, '', EXPIRED_COOKIE_DATE);
         done();
       }, { adUnits });
     });