Don't show left groups in list of all contacts

// FREEBIE

js/views/conversation_search_view.js

@@ -125,7 +125,11 @@
             if (this.showAllContacts) {
                 this.typeahead.fetchAlphabetical().then(function() {
                     if (this.typeahead.length > 0) {
-                        this.typeahead_view.collection.reset(this.typeahead.models);
+                        this.typeahead_view.collection.reset(
+                            this.typeahead.filter(function(m) {
+                                return m.isSearchable();
+                            })
+                        );
                     } else {
                         this.showHints();
                     }

test/views/conversation_search_view_test.js

@@ -62,5 +62,44 @@ describe('ConversationSearchView', function() {
           });
       });
   });
+  describe('Showing all contacts', function() {
+      var input = $('<input>');
+      var view = new Whisper.ConversationSearchView({ input: input }).render();
+      view.showAllContacts = true;
+      var convo = new Whisper.ConversationCollection().add({
+          id: 'a-left-group',
+          name: 'i left this group',
+          members: [],
+          type: 'group',
+          left: true
+      });
+      before(function(done) {
+          convo.save().then(done);
+      });
+      describe('with no messages', function() {
+          before(function(done) {
+              view.resetTypeahead();
+              view.typeahead_view.collection.on('reset', function() {
+                  done();
+              });
+          });
+          it('should not surface left groups with no messages', function() {
+              assert.isUndefined(view.typeahead_view.collection.get(convo.id), 'got left group');
+          });
+      });
+      describe('with messages', function() {
+          before(function(done) {
+              convo.save({lastMessage: 'asdf'}).then(function() {
+                view.typeahead_view.collection.on('reset', function() {
+                    done();
+                });
+                view.resetTypeahead();
+              });
+          });
+          it('should surface left groups with messages', function() {
+              assert.isDefined(view.typeahead_view.collection.get(convo.id), 'got left group');
+          });
+      });
+  });
 
 });