Reapply Austin's ADD: src query and tests

https://github.com/tableau/webdataconnector/pull/108/files

Author: sdesmond46

Simulator/tests/end-to-end/GeneralSimulator.js

@@ -38,7 +38,7 @@ describe('General Simulator Tests', function(){
     }
 
     // open simulator page
-    driver.get('http://localhost:8888/Simulator').then(function() {
+    driver.get('http://localhost:8888/Simulator?src=srcQuery').then(function() {
       simulatorWindow = driver.getWindowHandle();
       done();
     });
@@ -70,6 +70,18 @@ describe('General Simulator Tests', function(){
       });
   })
 
+  it("Should Have Set Src Query Url", function(done){
+    const wdcUrl = 'srcQuery';
+    driver.findElement({id:'address-input'})
+      .then(function (addressBar) {
+        return addressBar.getAttribute("value");
+      })
+      .then(function(url) {
+        url.should.be.equal(wdcUrl);
+        done();
+      });
+  })
+
   it("Should be Able to Enter a Url", function(done){
     let addressBar;
     const wdcUrl = '../Examples/html/earthquakeUSGS.html';

Simulator/utils/consts.js

@@ -1,4 +1,5 @@
 import Cookie from 'js-cookie';
+import queryString from 'querystring';
 
 // Set Class Constants
 export const eventNames = {
@@ -49,7 +50,13 @@ export const samples = [
 ];
 
 export const defaultMostRecentUrls = Cookie.getJSON('mostRecentUrls') || [...samples];
-export const defaultUrl = [...defaultMostRecentUrls][0];
+
+// if a src query was specified, use it, else use the first MRU
+// use a src query if one exists
+const srcQuery = typeof location !== 'undefined' ?
+  queryString.parse(location.search.slice(1)).src : null;
+
+export const defaultUrl = srcQuery || [...defaultMostRecentUrls][0];
 
 export const WINDOW_PROPS = 'height=500,width=800';