New bidder adapter for collectcent (prebid#3365)

* Create collectcentBidAdapter.js

New bider adapter for collectcent

* Create collectcentBidAdapter.md

Description and integration example

* Create collectcentBidAdapter_spec.js

Collectcent bidder adapter tests added

* Update collectcentBidAdapter_spec.js

edit

* Update collectcentBidAdapter.js

Used bidderRequest.refererInfo.referer instead of window.location

* Update collectcentBidAdapter.js

* Update collectcentBidAdapter.js

Rename URL to URL_MULTI

modules/collectcentBidAdapter.js

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+import { registerBidder } from 'src/adapters/bidderFactory';
+import { BANNER, NATIVE, VIDEO } from 'src/mediaTypes';
+import * as utils from 'src/utils';
+
+const BIDDER_CODE = 'collectcent';
+const URL_MULTI = '//publishers.motionspots.com/?c=o&m=multi';
+const URL_SYNC = '//publishers.motionspots.com/?c=o&m=cookie';
+
+export const spec = {
+  code: BIDDER_CODE,
+  supportedMediaTypes: [BANNER, VIDEO, NATIVE],
+
+  /**
+   * Determines whether or not the given bid request is valid.
+   *
+   * @param {object} bid The bid to validate.
+   * @return boolean True if this is a valid bid, and false otherwise.
+   */
+  isBidRequestValid: (bid) => {
+    return Boolean(bid.bidId &&
+        bid.params &&
+        !isNaN(bid.params.placementId) &&
+        spec.supportedMediaTypes.indexOf(bid.params.traffic) !== -1
+    );
+  },
+
+  /**
+   * Make a server request from the list of BidRequests.
+   *
+   * @param {BidRequest[]} validBidRequests A non-empty list of valid bid requests that should be sent to the Server.
+   * @return ServerRequest Info describing the request to the server.
+   */
+  buildRequests: (validBidRequests, bidderRequest) => {
+    let winTop;
+    try {
+      winTop = window.top;
+    } catch (e) {
+      utils.logMessage(e);
+      winTop = window;
+    };
+
+    const placements = [];
+    const location = bidderRequest ? new URL(bidderRequest.refererInfo.referer) : winTop.location;
+    const request = {
+      'secure': (location.protocol === 'https:') ? 1 : 0,
+      'deviceWidth': winTop.screen.width,
+      'deviceHeight': winTop.screen.height,
+      'host': location.host,
+      'page': location.pathname,
+      'placements': placements
+    };
+
+    for (let i = 0; i < validBidRequests.length; i++) {
+      const bid = validBidRequests[i];
+      const params = bid.params;
+      placements.push({
+        placementId: params.placementId,
+        bidId: bid.bidId,
+        sizes: bid.sizes,
+        traffic: params.traffic
+      });
+    }
+    return {
+      method: 'POST',
+      url: URL_MULTI,
+      data: request
+    };
+  },
+
+  /**
+   * Unpack the response from the server into a list of bids.
+   *
+   * @param {*} serverResponse A successful response from the server.
+   * @return {Bid[]} An array of bids which were nested inside the server.
+   */
+  interpretResponse: (serverResponse) => {
+    try {
+      serverResponse = serverResponse.body;
+    } catch (e) {
+      utils.logMessage(e);
+    };
+    return serverResponse;
+  },
+
+  getUserSyncs: () => {
+    return [{
+      type: 'image',
+      url: URL_SYNC
+    }];
+  }
+};
+
+registerBidder(spec);

modules/collectcentBidAdapter.md

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+# Overview
+
+```
+Module Name: Collectcent SSP Bidder Adapter
+Module Type: Bidder Adapter
+Maintainer: dev.collectcent@gmail.com
+```
+
+# Description
+
+Module that connects to Collectcent SSP demand sources
+
+# Test Parameters
+```
+    var adUnits = [{
+                code: 'placementCode',
+                sizes: [[300, 250]],
+                bids: [{
+                        bidder: 'collectcent',
+                        params: {
+                            placementId: 0,
+                            traffic: 'banner'
+                        }
+                    }]
+                }
+            ];
+```

test/spec/modules/collectcentBidAdapter_spec.js

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+import {expect} from 'chai';
+import {spec} from '../../../modules/collectcentBidAdapter';
+
+describe('Collectcent', function () {
+  let bid = {
+    bidId: '2dd581a2b6281d',
+    bidder: 'collectcent',
+    bidderRequestId: '145e1d6a7837c9',
+    params: {
+      placementId: 123,
+      traffic: 'banner'
+    },
+    placementCode: 'placement_0',
+    auctionId: '74f78609-a92d-4cf1-869f-1b244bbfb5d2',
+    sizes: [[300, 250]],
+    transactionId: '3bb2f6da-87a6-4029-aeb0-bfe951372e62'
+  };
+
+  describe('isBidRequestValid', function () {
+    it('Should return true when placementId can be cast to a number', function () {
+      expect(spec.isBidRequestValid(bid)).to.be.true;
+    });
+    it('Should return false when placementId is not a number', function () {
+      bid.params.placementId = 'aaa';
+      expect(spec.isBidRequestValid(bid)).to.be.false;
+    });
+  });
+
+  describe('buildRequests', function () {
+    let serverRequest = spec.buildRequests([bid]);
+    it('Creates a ServerRequest object with method, URL and data', function () {
+      expect(serverRequest).to.exist;
+      expect(serverRequest.method).to.exist;
+      expect(serverRequest.url).to.exist;
+      expect(serverRequest.data).to.exist;
+    });
+    it('Returns POST method', function () {
+      expect(serverRequest.method).to.equal('POST');
+    });
+    it('Returns valid URL', function () {
+      expect(serverRequest.url).to.equal('//publishers.motionspots.com/?c=o&m=multi');
+    });
+    it('Returns valid data if array of bids is valid', function () {
+      let data = serverRequest.data;
+      expect(data).to.be.an('object');
+      expect(data).to.have.all.keys('deviceWidth', 'deviceHeight', 'secure', 'host', 'page', 'placements');
+      expect(data.deviceWidth).to.be.a('number');
+      expect(data.deviceHeight).to.be.a('number');
+      expect(data.secure).to.be.within(0, 1);
+      expect(data.host).to.be.a('string');
+      expect(data.page).to.be.a('string');
+      let placements = data['placements'];
+      for (let i = 0; i < placements.length; i++) {
+        let placement = placements[i];
+        expect(placement).to.have.all.keys('placementId', 'bidId', 'traffic', 'sizes');
+        expect(placement.placementId).to.be.a('number');
+        expect(placement.bidId).to.be.a('string');
+        expect(placement.traffic).to.be.a('string');
+        expect(placement.sizes).to.be.an('array');
+      }
+    });
+    it('Returns empty data if no valid requests are passed', function () {
+      serverRequest = spec.buildRequests([]);
+      let data = serverRequest.data;
+      expect(data.placements).to.be.an('array').that.is.empty;
+    });
+  });
+  describe('interpretResponse', function () {
+    let resObject = {
+      body: [ {
+        requestId: '123',
+        mediaType: 'banner',
+        cpm: 0.3,
+        width: 320,
+        height: 50,
+        ad: '<h1>Hello ad</h1>',
+        ttl: 1000,
+        creativeId: '123asd',
+        netRevenue: true,
+        currency: 'USD'
+      } ]
+    };
+    let serverResponses = spec.interpretResponse(resObject);
+    it('Returns an array of valid server responses if response object is valid', function () {
+      expect(serverResponses).to.be.an('array').that.is.not.empty;
+      for (let i = 0; i < serverResponses.length; i++) {
+        let dataItem = serverResponses[i];
+        expect(dataItem).to.have.all.keys('requestId', 'cpm', 'width', 'height', 'ad', 'ttl', 'creativeId',
+          'netRevenue', 'currency', 'mediaType');
+        expect(dataItem.requestId).to.be.a('string');
+        expect(dataItem.cpm).to.be.a('number');
+        expect(dataItem.width).to.be.a('number');
+        expect(dataItem.height).to.be.a('number');
+        expect(dataItem.ad).to.be.a('string');
+        expect(dataItem.ttl).to.be.a('number');
+        expect(dataItem.creativeId).to.be.a('string');
+        expect(dataItem.netRevenue).to.be.a('boolean');
+        expect(dataItem.currency).to.be.a('string');
+        expect(dataItem.mediaType).to.be.a('string');
+      }
+      it('Returns an empty array if invalid response is passed', function () {
+        serverResponses = spec.interpretResponse('invalid_response');
+        expect(serverResponses).to.be.an('array').that.is.empty;
+      });
+    });
+  });
+
+  describe('getUserSyncs', function () {
+    let userSync = spec.getUserSyncs();
+    it('Returns valid URL and `', function () {
+      expect(userSync).to.be.an('array').with.lengthOf(1);
+      expect(userSync[0].type).to.exist;
+      expect(userSync[0].url).to.exist;
+      expect(userSync[0].type).to.be.equal('image');
+      expect(userSync[0].url).to.be.equal('//publishers.motionspots.com/?c=o&m=cookie');
+    });
+  });
+});