Add Gerrit.getLoggedIn to JS API

Feature: Issue 3915
Change-Id: Ie54178b703011bda4c76b4d64bad75786acfcd8d
diff --git a/polygerrit-ui/app/elements/shared/gr-js-api-interface/gr-js-api-interface_test.html b/polygerrit-ui/app/elements/shared/gr-js-api-interface/gr-js-api-interface_test.html
index 959ba64..5936bee 100644
--- a/polygerrit-ui/app/elements/shared/gr-js-api-interface/gr-js-api-interface_test.html
+++ b/polygerrit-ui/app/elements/shared/gr-js-api-interface/gr-js-api-interface_test.html
@@ -38,6 +38,11 @@
     };
 
     setup(function() {
+      stub('gr-rest-api-interface', {
+        getAccount: function() {
+          return Promise.resolve({name: 'Judy Hopps'});
+        },
+      })
       element = fixture('basic');
       errorStub = sinon.stub(console, 'error');
       Gerrit.install(function(p) { plugin = p; }, '0.1',
@@ -125,5 +130,12 @@
       assert(callback.notCalled);
     });
 
+    test('getAccount', function(done) {
+      Gerrit.getLoggedIn().then(function(loggedIn) {
+        assert.isTrue(loggedIn);
+        done();
+      });
+    });
+
   });
 </script>