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adloader_spec.js
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adloader_spec.js
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import * as utils from 'src/utils.js';
import * as adLoader from 'test/mocks/adloaderStub.js';
describe('adLoader', function () {
let utilsinsertElementStub;
let utilsLogErrorStub;
beforeEach(function () {
utilsinsertElementStub = sinon.stub(utils, 'insertElement');
utilsLogErrorStub = sinon.stub(utils, 'logError');
});
afterEach(function () {
utilsinsertElementStub.restore();
utilsLogErrorStub.restore();
});
describe('loadExternalScript', function () {
it('requires moduleCode to be included on the request', function () {
adLoader.loadExternalScript('someURL');
expect(utilsLogErrorStub.called).to.be.true;
expect(utilsinsertElementStub.called).to.be.false;
});
it('only allows whitelisted vendors to load scripts', function () {
adLoader.loadExternalScript('someURL', 'criteo');
expect(utilsLogErrorStub.called).to.be.false;
expect(utilsinsertElementStub.called).to.be.true;
});
it('should not load cached script again', function() {
adLoader.loadExternalScript('someURL', 'criteo');
expect(utilsinsertElementStub.called).to.be.false;
});
it('callback function can be passed to the function', function() {
let callback = function() {};
adLoader.loadExternalScript('someURL1', 'criteo', callback);
expect(utilsinsertElementStub.called).to.be.true;
});
it('requires a url to be included once per document', function () {
function getDocSpec() {
return {
createElement: function() {
return {
}
},
getElementsByTagName: function() {
return {
firstChild: {
insertBefore: function() {
}
}
}
}
}
}
const doc1 = getDocSpec();
const doc2 = getDocSpec();
adLoader.loadExternalScript('someURL', 'criteo', () => {}, doc1);
adLoader.loadExternalScript('someURL', 'criteo', () => {}, doc1);
adLoader.loadExternalScript('someURL', 'criteo', () => {}, doc1);
adLoader.loadExternalScript('someURL', 'criteo', () => {}, doc2);
adLoader.loadExternalScript('someURL', 'criteo', () => {}, doc2);
expect(utilsinsertElementStub.callCount).to.equal(2);
});
});
});