Added mock option to function.

app/scripts/lib/config-manager.js

@@ -288,8 +288,9 @@ ConfigManager.prototype.getCurrentFiat = function () {
   return ('fiatCurrency' in data) && data.fiatCurrency
 }
 
-ConfigManager.prototype.updateConversionRate = function () {
+ConfigManager.prototype.updateConversionRate = function (mock = false, mockCurrency = 'USD') {
   var data = this.getData()
+  if (!mock) {
     return rp(`https://www.cryptonator.com/api/ticker/eth-${data.fiatCurrency}`)
     .then((response) => {
       const parsedResponse = JSON.parse(response)
@@ -300,9 +301,19 @@ ConfigManager.prototype.updateConversionRate = function () {
       this.setConversionPrice(0)
       this.setConversionDate('N/A')
     })
+  } else {
+    return new Promise(function(resolve, reject) { resolve() }).then((response) => {
+      this.setConversionPrice('11.01')
+      this.setConversionDate(1472065924)
+    }).catch((err) => {
+      console.error('Error in conversion.', err)
+      this.setConversionPrice('11.01')
+      this.setConversionDate(1472065924)
+    })
+  }
 }
 
-ConfigManager.prototype.setConversionPrice = function(price) {
+ConfigManager.prototype.setConversionPrice = function (price) {
   var data = this.getData()
   data.conversionRate = Number(price)
   this.setData(data)
@@ -372,4 +383,3 @@ ConfigManager.prototype.createShapeShiftTx = function (depositAddress, depositTy
   }
   this.setData(data)
 }
-