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CarAuction.js
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CarAuction.js
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/*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
'use strict';
const AdminConnection = require('composer-admin').AdminConnection;
const BusinessNetworkConnection = require('composer-client').BusinessNetworkConnection;
const { BusinessNetworkDefinition, CertificateUtil, IdCard, MemoryCardStore } = require('composer-common');
const path = require('path');
require('chai').should();
const NS = 'org.acme.vehicle.auction';
describe('CarAuction', () => {
// In-memory card store for testing so cards are not persisted to the file system
const cardStore = new MemoryCardStore();
let adminConnection;
let businessNetworkConnection;
before(async () => {
// Embedded connection used for local testing
const connectionProfile = {
name: 'embedded',
'x-type': 'embedded'
};
// Generate certificates for use with the embedded connection
const credentials = CertificateUtil.generate({ commonName: 'admin' });
// PeerAdmin identity used with the admin connection to deploy business networks
const deployerMetadata = {
version: 1,
userName: 'PeerAdmin',
roles: [ 'PeerAdmin', 'ChannelAdmin' ]
};
const deployerCard = new IdCard(deployerMetadata, connectionProfile);
deployerCard.setCredentials(credentials);
const deployerCardName = 'PeerAdmin';
adminConnection = new AdminConnection({ cardStore: cardStore });
await adminConnection.importCard(deployerCardName, deployerCard);
await adminConnection.connect(deployerCardName);
});
beforeEach(async () => {
businessNetworkConnection = new BusinessNetworkConnection({ cardStore: cardStore });
const adminUserName = 'admin';
let adminCardName;
let businessNetworkDefinition = await BusinessNetworkDefinition.fromDirectory(path.resolve(__dirname, '..'));
// Install the Composer runtime for the new business network
await adminConnection.install(businessNetworkDefinition.getName());
// Start the business network and configure an network admin identity
const startOptions = {
networkAdmins: [
{
userName: adminUserName,
enrollmentSecret: 'adminpw'
}
]
};
const adminCards = await adminConnection.start(businessNetworkDefinition, startOptions);
// Import the network admin identity for us to use
adminCardName = `${adminUserName}@${businessNetworkDefinition.getName()}`;
await adminConnection.importCard(adminCardName, adminCards.get(adminUserName));
// Connect to the business network using the network admin identity
await businessNetworkConnection.connect(adminCardName);
});
describe('#makeOffer', () => {
it('should add the offer to the offers of a vehicle listing', async () => {
const factory = businessNetworkConnection.getBusinessNetwork().getFactory();
// create the auctioneer
const seller = factory.newResource(NS, 'Member', 'daniel.selman@example.com');
seller.firstName = 'Dan';
seller.lastName = 'Selman';
seller.balance = 0;
// create the vehicle
const vehicle = factory.newResource(NS, 'Vehicle', 'CAR_001');
vehicle.owner = factory.newRelationship(NS, 'Member', seller.$identifier);
// create the vehicle listing
const listing = factory.newResource(NS, 'VehicleListing', 'LISTING_001');
listing.reservePrice = 100;
listing.description = 'My nice car';
listing.state = 'FOR_SALE';
listing.vehicle = factory.newRelationship(NS, 'Vehicle', 'CAR_001');
// create the buyer
const buyer = factory.newResource(NS, 'Member', 'sstone1@example.com');
buyer.firstName = 'Simon';
buyer.lastName = 'Stone';
buyer.balance = 1000;
// create another potential buyer
const buyer2 = factory.newResource(NS, 'Member', 'whitemat@example.com');
buyer2.firstName = 'Matthew';
buyer2.lastName = 'White';
buyer2.balance = 100;
// create the auctioneer
const auctioneer = factory.newResource(NS, 'Auctioneer', 'boss@auction.com');
auctioneer.firstName = 'Mr';
auctioneer.lastName = 'Smith';
const offer = factory.newTransaction(NS, 'Offer');
offer.member = factory.newRelationship(NS, 'Member', buyer.$identifier);
offer.listing = factory.newRelationship(NS, 'VehicleListing', 'LISTING_001');
offer.bidPrice = 200;
// Get the registries.
const vehicleRegistry = await businessNetworkConnection.getAssetRegistry(NS + '.Vehicle');
const vehicleListingRegistry = await businessNetworkConnection.getAssetRegistry(NS + '.VehicleListing');
const userRegistry = await businessNetworkConnection.getParticipantRegistry(NS + '.Member');
const auctioneerRegistry = await businessNetworkConnection.getParticipantRegistry(NS + '.Auctioneer');
// Add the Vehicle to the asset registry.
await vehicleRegistry.add(vehicle);
// Add the VehicleListing to the asset registry
await vehicleListingRegistry.add(listing);
// add the members
await userRegistry.addAll([buyer, buyer2, seller]);
// add the auctioneers
await auctioneerRegistry.addAll([auctioneer]);
// Create the offer transaction and submit
await businessNetworkConnection.submitTransaction(offer);
// Create the offer transaction and submit
const lowOffer = factory.newTransaction(NS, 'Offer');
lowOffer.member = factory.newRelationship(NS, 'Member', buyer2.$identifier);
lowOffer.listing = factory.newRelationship(NS, 'VehicleListing', 'LISTING_001');
lowOffer.bidPrice = 50;
await businessNetworkConnection.submitTransaction(lowOffer);
// get the listing
let newListing = await vehicleListingRegistry.get(listing.$identifier);
// both offers should have been added to the listing
newListing.offers.length.should.equal(2);
// close the bidding
const closeBidding = factory.newTransaction(NS, 'CloseBidding');
closeBidding.listing = factory.newRelationship(NS, 'VehicleListing', 'LISTING_001');
await businessNetworkConnection.submitTransaction(closeBidding);
// get the listing
newListing = await vehicleListingRegistry.get(listing.$identifier);
// the offer should have been added to the listing
newListing.state.should.equal('SOLD');
// get the buyer and seller
const theBuyer = await userRegistry.get(buyer.$identifier);
const theSeller = await userRegistry.get(seller.$identifier);
// check the buyer's balance
theBuyer.balance.should.equal(800);
// check the seller's balance
theSeller.balance.should.equal(200);
// get the vehicle
const theVehicle = await vehicleRegistry.get(vehicle.$identifier);
// check that the buyer now owns the car
theVehicle.owner.getIdentifier().should.equal(buyer.$identifier);
});
describe('#closeBidding', () => {
it('with no bids should result in RESERVE_NOT_MET', async () => {
const factory = businessNetworkConnection.getBusinessNetwork().getFactory();
const seller = factory.newResource(NS, 'Member', 'daniel.selman@example.com');
seller.firstName = 'Dan';
seller.lastName = 'Selman';
seller.balance = 0;
// create the vehicle
const vehicle = factory.newResource(NS, 'Vehicle', 'CAR_001');
vehicle.owner = factory.newRelationship(NS, 'Member', seller.$identifier);
// create the vehicle listing
const listing = factory.newResource(NS, 'VehicleListing', 'LISTING_001');
listing.reservePrice = 100;
listing.description = 'My nice car';
listing.state = 'FOR_SALE';
listing.vehicle = factory.newRelationship(NS, 'Vehicle', vehicle.$identifier);
// Get the registries.
const vehicleRegistry = await businessNetworkConnection.getAssetRegistry(NS + '.Vehicle');
const vehicleListingRegistry = await businessNetworkConnection.getAssetRegistry(NS + '.VehicleListing');
const userRegistry = await businessNetworkConnection.getParticipantRegistry(NS + '.Member');
// Add the Vehicle to the asset registry.
await vehicleRegistry.add(vehicle);
// add the seller to the member registry
await userRegistry.add(seller);
// add the vehicle listing
await vehicleListingRegistry.add(listing);
// close the bidding
const closeBidding = factory.newTransaction(NS, 'CloseBidding');
closeBidding.listing = factory.newRelationship(NS, 'VehicleListing', listing.$identifier);
await businessNetworkConnection.submitTransaction(closeBidding);
// get the listing and check state
const vehicleListing = await vehicleListingRegistry.get(listing.$identifier);
vehicleListing.state.should.equal('RESERVE_NOT_MET');
});
});
});
});