diff --git a/src/ui/__tests__/ui_app.js b/src/ui/__tests__/ui_app.js
new file mode 100644
index 0000000000000..b351201b562b4
--- /dev/null
+++ b/src/ui/__tests__/ui_app.js
@@ -0,0 +1,263 @@
+import expect from 'expect.js';
+import UiApp from '../ui_app.js';
+import UiExports from '../ui_exports';
+import { isUndefined, noop } from 'lodash';
+
+function getMockSpec(extraParams) {
+  return {
+    id: 'uiapp-test',
+    main: 'main.js',
+    title: 'UIApp Test',
+    order: 9000,
+    description: 'Test of UI App Constructor',
+    icon: 'ui_app_test.svg',
+    linkToLastSubUrl: true,
+    hidden: false,
+    listed: null,
+    templateName: 'ui_app_test',
+    ...extraParams
+  };
+}
+describe('UiApp', () => {
+  describe('constructor', () => {
+    const uiExports = new UiExports({});
+
+    it('throw if ID is not given', () => {
+      function newAppMissingID() {
+        const spec = {}; // should have id property
+        const newApp = new UiApp(uiExports, spec);
+        return newApp;
+      }
+      expect(newAppMissingID).to.throwException();
+    });
+
+    describe('defaults', () => {
+      const spec = { id: 'uiapp-test-defaults' };
+      let newApp;
+      beforeEach(() => {
+        newApp = new UiApp(uiExports, spec);
+      });
+
+      it('use the spec ID', () => {
+        expect(newApp.id).to.be('uiapp-test-defaults');
+      });
+
+      it('creates fields with undefined value', () => {
+        // test that the fields exist, but have undefined value
+        expect('main' in newApp).to.be(true);
+        expect(isUndefined(newApp.main)).to.be(true);
+
+        expect('title' in newApp).to.be(true);
+        expect(isUndefined(newApp.title)).to.be(true);
+
+        expect('description' in newApp).to.be(true);
+        expect(isUndefined(newApp.description)).to.be(true);
+
+        expect('icon' in newApp).to.be(true);
+        expect(isUndefined(newApp.icon)).to.be(true);
+
+        expect('linkToLastSubUrl' in newApp).to.be(true);
+        expect(isUndefined(newApp.linkToLastSubUrl)).to.be(true);
+      });
+
+      it('default navLink', () => {
+        expect(newApp.navLink).to.eql({
+          id: 'uiapp-test-defaults',
+          title: undefined,
+          order: 0,
+          url: '/app/uiapp-test-defaults',
+          description: undefined,
+          icon: undefined,
+          linkToLastSubUrl: true,
+          hidden: false,
+          disabled: false,
+          tooltip: ''
+        });
+      });
+
+      it('default order of 0', () => {
+        expect(newApp.order).to.be(0);
+      });
+
+      it('template name is ui_app', () => {
+        expect(newApp.templateName).to.be('ui_app');
+      });
+    });
+
+    describe('with spec', () => {
+      const spec = getMockSpec();
+      let newApp;
+      beforeEach(() => {
+        newApp = new UiApp(uiExports, spec);
+      });
+
+      it('use the spec ID', () => {
+        expect(newApp.id).to.be('uiapp-test');
+      });
+
+      it('copies field values from spec', () => {
+        // test that the fields exist, but have undefined value
+        expect(newApp.main).to.be('main.js');
+        expect(newApp.title).to.be('UIApp Test');
+        expect(newApp.description).to.be('Test of UI App Constructor');
+        expect(newApp.icon).to.be('ui_app_test.svg');
+        expect(newApp.linkToLastSubUrl).to.be(true);
+        expect(newApp.templateName).to.be('ui_app_test');
+        expect(newApp.order).to.be(9000);
+        expect(newApp.navLink).to.eql({
+          id: 'uiapp-test',
+          title: 'UIApp Test',
+          order: 9000,
+          url: '/app/uiapp-test',
+          description: 'Test of UI App Constructor',
+          icon: 'ui_app_test.svg',
+          linkToLastSubUrl: true,
+          hidden: false,
+          disabled: false,
+          tooltip: ''
+        });
+      });
+    });
+
+    describe('reference fields', () => {
+      const spec = getMockSpec({ testSpec: true });
+      let newApp;
+      beforeEach(() => {
+        newApp = new UiApp(uiExports, spec);
+      });
+
+      it('uiExports', () => {
+        expect(newApp.uiExports).to.be(uiExports);
+      });
+      it('spec', () => {
+        expect(newApp.spec).to.be(spec);
+      });
+    });
+
+    describe('getInjectedVars', () => {
+      it('noop function by default', () => {
+        const spec = {
+          id: 'uiapp-test'
+        };
+        const newApp = new UiApp(uiExports, spec);
+        expect(newApp.getInjectedVars).to.be(noop);
+      });
+      it('reference to spec.injectVars', () => {
+        const helloFunction = () => 'hello';
+        const spec = {
+          id: 'uiapp-test',
+          injectVars: helloFunction
+        };
+        const newApp = new UiApp(uiExports, spec);
+        expect(newApp.getInjectedVars).to.be(helloFunction);
+      });
+    });
+
+    describe('hidden and listed', () => {
+      it('if hidden and listed are not set, hidden is set as false and listed is set as true', () => {
+        const spec = {
+          id: 'uiapp-test'
+        };
+        const newApp = new UiApp(uiExports, spec);
+        expect(newApp.hidden).to.be(false);
+        expect(newApp.listed).to.be(true);
+      });
+      it('if listed is passed as null, and hidden is true, listed is set as false', () => {
+        const spec = {
+          id: 'uiapp-test',
+          hidden: true,
+          listed: null
+        };
+        const newApp = new UiApp(uiExports, spec);
+        expect(newApp.hidden).to.be(true);
+        expect(newApp.listed).to.be(false);
+      });
+      it('if listed is passed as null, and hidden is false, listed is set as true', () => {
+        const spec = {
+          id: 'uiapp-test',
+          hidden: false,
+          listed: null
+        };
+        const newApp = new UiApp(uiExports, spec);
+        expect(newApp.hidden).to.be(false);
+        expect(newApp.listed).to.be(true);
+      });
+      it('if listed is passed as null, and hidden not set, listed is set as true', () => {
+        const spec = {
+          id: 'uiapp-test',
+          listed: null
+        };
+        const newApp = new UiApp(uiExports, spec);
+        expect(newApp.hidden).to.be(false);
+        expect(newApp.listed).to.be(true);
+      });
+      it('if listed is passed as true, is set with that value', () => {
+        const spec = {
+          id: 'uiapp-test',
+          listed: true
+        };
+        const newApp = new UiApp(uiExports, spec);
+        expect(newApp.hidden).to.be(false);
+        expect(newApp.listed).to.be(true);
+      });
+      it('if listed is passed as false, is set with that value', () => {
+        const spec = {
+          id: 'uiapp-test',
+          listed: false
+        };
+        const newApp = new UiApp(uiExports, spec);
+        expect(newApp.hidden).to.be(false);
+        expect(newApp.listed).to.be(false);
+      });
+    });
+  });
+
+  describe('getModules', () => {
+    it('gets modules from uiExports', () => {
+      const uiExports = new UiExports({});
+      uiExports.consumePlugin({
+        uiExportsSpecs: {
+          chromeNavControls: [ 'plugins/ui_app_test/views/nav_control' ],
+          hacks: [ 'plugins/ui_app_test/hacks/init' ]
+        }
+      });
+      const spec = getMockSpec();
+      const newApp = new UiApp(uiExports, spec);
+
+      expect(newApp.getModules()).to.eql([
+        'main.js',
+        'plugins/ui_app_test/views/nav_control',
+        'plugins/ui_app_test/hacks/init'
+      ]);
+    });
+  });
+
+  describe('toJSON', function () {
+    it('creates plain object', () => {
+      const uiExports = new UiExports({});
+      const spec = getMockSpec();
+      const newApp = new UiApp(uiExports, spec);
+
+      expect(newApp.toJSON()).to.eql({
+        id: 'uiapp-test',
+        title: 'UIApp Test',
+        description: 'Test of UI App Constructor',
+        icon: 'ui_app_test.svg',
+        main: 'main.js',
+        navLink: {
+          id: 'uiapp-test',
+          title: 'UIApp Test',
+          order: 9000,
+          url: '/app/uiapp-test',
+          description: 'Test of UI App Constructor',
+          icon: 'ui_app_test.svg',
+          linkToLastSubUrl: true,
+          hidden: false,
+          disabled: false,
+          tooltip: ''
+        },
+        linkToLastSubUrl: true
+      });
+    });
+  });
+});
diff --git a/src/ui/ui_app.js b/src/ui/ui_app.js
index 6d7ca0ae5ab63..74e54e101bb0b 100644
--- a/src/ui/ui_app.js
+++ b/src/ui/ui_app.js
@@ -16,6 +16,7 @@ class UiApp {
     this.order = this.spec.order || 0;
     this.description = this.spec.description;
     this.icon = this.spec.icon;
+    this.linkToLastSubUrl = this.spec.linkToLastSubUrl;
     this.hidden = !!this.spec.hidden;
     this.listed = this.spec.listed == null ? !this.hidden : this.spec.listed;
     this.templateName = this.spec.templateName || 'ui_app';
@@ -28,7 +29,8 @@ class UiApp {
         order: this.order,
         description: this.description,
         icon: this.icon,
-        url: this.spec.url || `/app/${this.id}`
+        url: this.spec.url || `/app/${this.id}`,
+        linkToLastSubUrl: this.linkToLastSubUrl
       });
 
       if (!this.listed) {
@@ -63,7 +65,7 @@ class UiApp {
   }
 
   toJSON() {
-    return pick(this, ['id', 'title', 'description', 'icon', 'main', 'navLink']);
+    return pick(this, ['id', 'title', 'description', 'icon', 'main', 'navLink', 'linkToLastSubUrl']);
   }
 }