diff --git a/test/spec/modules/appnexusBidAdapter_spec.js b/test/spec/modules/appnexusBidAdapter_spec.js
index 9be87ac8628..37126475af8 100644
--- a/test/spec/modules/appnexusBidAdapter_spec.js
+++ b/test/spec/modules/appnexusBidAdapter_spec.js
@@ -4,9 +4,21 @@ import { newBidder } from 'src/adapters/bidderFactory';
 import { deepClone } from 'src/utils';
 
 const ENDPOINT = '//ib.adnxs.com/ut/v3/prebid';
+const adloader = require('src/adloader');
 
 describe('AppNexusAdapter', function () {
   const adapter = newBidder(spec);
+  let loadScriptStub;
+
+  before(function() {
+    loadScriptStub = sinon.stub(adloader, 'loadScript').callsFake((...args) => {
+      args[1]();
+    });
+  });
+
+  after(function() {
+    loadScriptStub.restore();
+  });
 
   describe('inherited functions', function () {
     it('exists and is a function', function () {
diff --git a/test/spec/modules/beachfrontBidAdapter_spec.js b/test/spec/modules/beachfrontBidAdapter_spec.js
index 21e175a5b82..edaff2c88ce 100644
--- a/test/spec/modules/beachfrontBidAdapter_spec.js
+++ b/test/spec/modules/beachfrontBidAdapter_spec.js
@@ -1,9 +1,21 @@
 import { expect } from 'chai';
 import { spec, VIDEO_ENDPOINT, BANNER_ENDPOINT, OUTSTREAM_SRC, DEFAULT_MIMES } from 'modules/beachfrontBidAdapter';
 import * as utils from 'src/utils';
+const adloader = require('src/adloader');
 
 describe('BeachfrontAdapter', function () {
   let bidRequests;
+  let loadScriptStub;
+
+  before(function() {
+    loadScriptStub = sinon.stub(adloader, 'loadScript').callsFake((...args) => {
+      args[1]();
+    });
+  });
+
+  after(function() {
+    loadScriptStub.restore();
+  });
 
   beforeEach(function () {
     bidRequests = [
diff --git a/test/spec/modules/consentManagement_spec.js b/test/spec/modules/consentManagement_spec.js
index 1303d9cd718..6af8c8a4478 100644
--- a/test/spec/modules/consentManagement_spec.js
+++ b/test/spec/modules/consentManagement_spec.js
@@ -678,8 +678,8 @@ describe('consentManagement', function () {
 
       // Run tests with JSON response and String response
       // from CMP window postMessage listener.
-      // testIFramedPage('with/JSON response', false);
-      // testIFramedPage('with/String response', true);
+      testIFramedPage('with/JSON response', false);
+      testIFramedPage('with/String response', true);
 
       function testIFramedPage(testName, messageFormatString) {
         it(`should return the consent string from a postmessage + addEventListener response - ${testName}`, (done) => {
diff --git a/test/spec/modules/rockyouBidAdapter_spec.js b/test/spec/modules/rockyouBidAdapter_spec.js
index 65d87566c26..81404189802 100644
--- a/test/spec/modules/rockyouBidAdapter_spec.js
+++ b/test/spec/modules/rockyouBidAdapter_spec.js
@@ -1,9 +1,21 @@
 import { expect } from 'chai';
 import { spec, internals } from 'modules/rockyouBidAdapter';
 import { newBidder } from 'src/adapters/bidderFactory';
+const adloader = require('src/adloader');
 
 describe('RockYouAdapter', function () {
   const adapter = newBidder(spec);
+  let loadScriptStub;
+
+  before(function() {
+    loadScriptStub = sinon.stub(adloader, 'loadScript').callsFake((...args) => {
+      args[1]();
+    });
+  });
+
+  after(function() {
+    loadScriptStub.restore();
+  });
 
   describe('bid validator', function () {
     it('rejects a bid that is missing the placementId', function () {
diff --git a/test/spec/modules/vubleBidAdapter_spec.js b/test/spec/modules/vubleBidAdapter_spec.js
index 8996c1b4957..0a23965b22b 100644
--- a/test/spec/modules/vubleBidAdapter_spec.js
+++ b/test/spec/modules/vubleBidAdapter_spec.js
@@ -3,8 +3,21 @@
 import {expect} from 'chai';
 import {spec as adapter} from 'modules/vubleBidAdapter';
 import * as utils from 'src/utils';
+const adloader = require('../../../src/adloader');
 
 describe('VubleAdapter', function () {
+  let loadScriptStub;
+
+  before(function() {
+    loadScriptStub = sinon.stub(adloader, 'loadScript').callsFake((...args) => {
+      args[1]();
+    });
+  });
+
+  after(function() {
+    loadScriptStub.restore();
+  });
+
   describe('Check methods existance', function () {
     it('exists and is a function', function () {
       expect(adapter.isBidRequestValid).to.exist.and.to.be.a('function');
diff --git a/test/spec/modules/xhbBidAdapter_spec.js b/test/spec/modules/xhbBidAdapter_spec.js
index e48d3011ed2..9ef90492acc 100644
--- a/test/spec/modules/xhbBidAdapter_spec.js
+++ b/test/spec/modules/xhbBidAdapter_spec.js
@@ -4,9 +4,21 @@ import { newBidder } from 'src/adapters/bidderFactory';
 import { deepClone } from 'src/utils';
 
 const ENDPOINT = '//ib.adnxs.com/ut/v3/prebid';
+const adloader = require('../../../src/adloader');
 
 describe('xhbAdapter', function () {
   const adapter = newBidder(spec);
+  let loadScriptStub;
+
+  before(function() {
+    loadScriptStub = sinon.stub(adloader, 'loadScript').callsFake((...args) => {
+      args[1]();
+    });
+  });
+
+  after(function() {
+    loadScriptStub.restore();
+  });
 
   describe('inherited functions', function () {
     it('exists and is a function', function () {
diff --git a/test/spec/modules/zedoBidAdapter_spec.js b/test/spec/modules/zedoBidAdapter_spec.js
index abb0a5c97fb..1bae0997749 100644
--- a/test/spec/modules/zedoBidAdapter_spec.js
+++ b/test/spec/modules/zedoBidAdapter_spec.js
@@ -1,7 +1,20 @@
 import { expect } from 'chai';
 import { spec } from 'modules/zedoBidAdapter';
+const adloader = require('src/adloader');
 
 describe('The ZEDO bidding adapter', function () {
+  let loadScriptStub;
+
+  before(function() {
+    loadScriptStub = sinon.stub(adloader, 'loadScript').callsFake((...args) => {
+      args[1]();
+    });
+  });
+
+  after(function() {
+    loadScriptStub.restore();
+  });
+
   describe('isBidRequestValid', function () {
     it('should return false when given an invalid bid', function () {
       const bid = {
@@ -245,7 +258,6 @@ describe('The ZEDO bidding adapter', function () {
       expect(bids[0].vastXml).to.not.equal('');
       expect(bids[0].ad).to.be.an('undefined');
       expect(bids[0].renderer).not.to.be.an('undefined');
-      bids[0].renderer.render(bids[0]);
     });
   });
 
diff --git a/test/spec/unit/core/bidderFactory_spec.js b/test/spec/unit/core/bidderFactory_spec.js
index 6cc4a0b172c..bc815a8afd2 100644
--- a/test/spec/unit/core/bidderFactory_spec.js
+++ b/test/spec/unit/core/bidderFactory_spec.js
@@ -7,6 +7,7 @@ import { userSync } from 'src/userSync'
 import * as utils from 'src/utils';
 import { config } from 'src/config';
 
+const adloader = require('src/adloader');
 const CODE = 'sampleBidder';
 const MOCK_BIDS_REQUEST = {
   bids: [
@@ -34,6 +35,13 @@ describe('bidders created by newBidder', function () {
   let bidder;
   let addBidResponseStub;
   let doneStub;
+  let loadScriptStub;
+
+  before(function() {
+    loadScriptStub = sinon.stub(adloader, 'loadScript').callsFake((...args) => {
+      args[1]();
+    });
+  });
 
   beforeEach(function () {
     spec = {
@@ -48,6 +56,10 @@ describe('bidders created by newBidder', function () {
     doneStub = sinon.stub();
   });
 
+  after(function() {
+    loadScriptStub.restore();
+  });
+
   describe('when the ajax response is irrelevant', function () {
     let ajaxStub;