Add count of campers who have earned all three certs to about page (#8288)

* add count of campers who have earned all three certs to about page

* refactor to get tests to pass

server/boot/about.js

@@ -16,6 +16,15 @@ function getCertCount(userCount, cert) {
     ::timeCache(2, 'hours');
 }
 
+function getAllThreeCertsCount(userCount) {
+  return userCount({ 
+    isFrontEndCert: true, 
+    isDataVisCert: true, 
+    isBackEndCert: true 
+  })
+    ::timeCache(2, 'hours');
+}
+
 export default function about(app) {
   const router = app.loopback.Router();
   const User = app.models.User;
@@ -23,6 +32,7 @@ export default function about(app) {
   const frontEndCount$ = getCertCount(userCount, 'isFrontEndCert');
   const dataVisCount$ = getCertCount(userCount, 'isDataVisCert');
   const backEndCount$ = getCertCount(userCount, 'isBackEndCert');
+  const allThreeCount$ = getAllThreeCertsCount(userCount);
 
   function showAbout(req, res, next) {
     const daysRunning = moment().diff(new Date('10/15/2014'), 'days');
@@ -31,17 +41,30 @@ export default function about(app) {
       frontEndCount$,
       dataVisCount$,
       backEndCount$,
-      (frontEndCount = 0, dataVisCount = 0, backEndCount = 0) => ({
+      allThreeCount$,
+      (
+        frontEndCount = 0,
+        dataVisCount = 0,
+        backEndCount = 0,
+        allThreeCount = 0
+      ) => ({
         frontEndCount,
         dataVisCount,
-        backEndCount
+        backEndCount,
+        allThreeCount
       })
     )
-      .doOnNext(({ frontEndCount, dataVisCount, backEndCount }) => {
+      .doOnNext(({ 
+        frontEndCount, 
+        dataVisCount, 
+        backEndCount, 
+        allThreeCount 
+      }) => { 
         res.render('resources/about', {
           frontEndCount: numberWithCommas(frontEndCount),
           dataVisCount: numberWithCommas(dataVisCount),
           backEndCount: numberWithCommas(backEndCount),
+          allThreeCount: numberWithCommas(allThreeCount),
           daysRunning,
           title: dedent`
             About our Open Source Community, our social media presence,

server/views/resources/about.jade

@@ -38,6 +38,10 @@ block content
                     span.tag Back End:	
                     span.text-primary #{backEndCount}
                     | earned
+                li.nowrap
+                    span.tag All three:	
+                    span.text-primary #{allThreeCount}
+                    | earned
     .spacer
     .row
         .col-xs-12.col-sm-10.col-sm-offset-1.col-md-6.col-md-offset-3