Test coverage improved

modules/yieldmoSyntheticInventoryModule.js

@@ -17,7 +17,7 @@ export function init(config) {
       document.addEventListener('DOMContentLoaded', () => googletagCmd(config, containerName, googletag));
     }
   });
-};
+}
 
 export function validateConfig(config) {
   if (!('placementId' in config)) {

test/spec/modules/yieldmoSyntheticInventoryModule_spec.js

@@ -10,9 +10,32 @@ const mockedYmConfig = {
   adUnitPath: '/6355419/ad_unit_name_used_in_gam'
 };
 
+const setGoogletag = () => {
+  window.top.googletag = {
+    cmd: [],
+    defineSlot: sinon.stub(),
+    addService: sinon.stub(),
+    pubads: sinon.stub(),
+    setTargeting: sinon.stub(),
+    enableServices: sinon.stub(),
+    display: sinon.stub(),
+  };
+  window.top.googletag.defineSlot.returns(window.top.googletag);
+  window.top.googletag.addService.returns(window.top.googletag);
+  return window.top.googletag;
+}
+
 describe('Yieldmo Synthetic Inventory Module', function() {
   let config = Object.assign({}, mockedYmConfig);
 
+  beforeEach(function () {
+    delete window.top.googletag;
+  });
+
+  afterEach(function () {
+    delete window.top.googletag;
+  });
+
   it('should be enabled with valid required params', function() {
     expect(function () {
       init(mockedYmConfig);
@@ -34,4 +57,30 @@ describe('Yieldmo Synthetic Inventory Module', function() {
       validateConfig(config);
     }).throw(`${MODULE_NAME}: adUnitPath required`)
   });
+
+  it('should add correct googletag.cmd', function() {
+    const containerName = 'ym_sim_container_' + mockedYmConfig.placementId;
+    const gtag = setGoogletag();
+
+    init(mockedYmConfig);
+
+    expect(gtag.cmd.length).to.equal(1);
+
+    gtag.cmd[0]();
+
+    expect(gtag.addService.getCall(0)).to.not.be.null;
+    expect(gtag.setTargeting.getCall(0)).to.not.be.null;
+    expect(gtag.setTargeting.getCall(0).args[0]).to.exist.and.to.equal('ym_sim_p_id');
+    expect(gtag.setTargeting.getCall(0).args[1]).to.exist.and.to.equal(mockedYmConfig.placementId);
+    expect(gtag.defineSlot.getCall(0)).to.not.be.null;
+    expect(gtag.enableServices.getCall(0)).to.not.be.null;
+    expect(gtag.display.getCall(0)).to.not.be.null;
+    expect(gtag.display.getCall(0).args[0]).to.exist.and.to.equal(containerName);
+    expect(gtag.pubads.getCall(0)).to.not.be.null;
+
+    const gamContainerEl = window.top.document.getElementById(containerName);
+    expect(gamContainerEl).to.not.be.null;
+
+    gamContainerEl.parentNode.removeChild(gamContainerEl);
+  });
 });