From ca5f1bef680db56ec2939be100a5b54003d59bcd Mon Sep 17 00:00:00 2001
From: Nick Lincoln <nkl199@yahoo.co.uk>
Date: Tue, 7 Nov 2017 11:45:21 +0000
Subject: [PATCH] add fake timers to enable timestamp advancing (#108)

Signed-off-by: Nick Lincoln <nkl199@yahoo.co.uk>
---
 packages/perishable-network/package.json       |  3 ++-
 packages/perishable-network/test/perishable.js | 15 ++++++++++++---
 2 files changed, 14 insertions(+), 4 deletions(-)

diff --git a/packages/perishable-network/package.json b/packages/perishable-network/package.json
index 57da115..a710776 100644
--- a/packages/perishable-network/package.json
+++ b/packages/perishable-network/package.json
@@ -44,7 +44,8 @@
     "license-check": "^1.1.5",
     "mkdirp": "^0.5.1",
     "mocha": "^3.2.0",
-    "moment": "^2.17.1"
+    "moment": "^2.17.1",
+    "sinon": "2.3.8"
   },
   "license-check-config": {
     "src": [
diff --git a/packages/perishable-network/test/perishable.js b/packages/perishable-network/test/perishable.js
index 4bd3711..d5e84e8 100644
--- a/packages/perishable-network/test/perishable.js
+++ b/packages/perishable-network/test/perishable.js
@@ -21,12 +21,14 @@ const BusinessNetworkDefinition = require('composer-common').BusinessNetworkDefi
 const path = require('path');
 
 require('chai').should();
+let sinon = require('sinon');
 
 const bfs_fs = BrowserFS.BFSRequire('fs');
 const NS = 'org.acme.shipping.perishable';
 let grower_id = 'farmer@email.com';
 let importer_id = 'supermarket@email.com';
 let factory;
+let clock;
 
 describe('Perishable Shipping Network', () => {
 
@@ -60,6 +62,14 @@ describe('Perishable Shipping Network', () => {
         });
     });
 
+    beforeEach(function () {
+        clock = sinon.useFakeTimers();
+    });
+
+    afterEach(function () {
+        clock.restore();
+    });
+
     describe('#shipment', () => {
 
         it('should receive base price for a shipment within temperature range', () => {
@@ -112,14 +122,13 @@ describe('Perishable Shipping Network', () => {
             const tempReading = factory.newTransaction(NS, 'TemperatureReading');
             tempReading.shipment = factory.newRelationship(NS, 'Shipment', 'SHIP_001');
             tempReading.centigrade = 4.5;
+            // advance the javascript clock to create a time-advanced test timestamp
+            clock.tick(1000000000000000);
             return businessNetworkConnection.submitTransaction(tempReading)
                 .then(() => {
                     // submit the shipment received
                     const received = factory.newTransaction(NS, 'ShipmentReceived');
                     received.shipment = factory.newRelationship(NS, 'Shipment', 'SHIP_001');
-                    const late = new Date();
-                    late.setDate(late.getDate() + 2);
-                    received.timestamp = late;
                     return businessNetworkConnection.submitTransaction(received);
                 })
                 .then(() => {