fix(tooltip): don't show tooltips if there is no content to show

Closes #129

src/tooltip/test/tooltipSpec.js → src/tooltip/test/tooltip.spec.js

@@ -111,6 +111,16 @@ describe('tooltip', function() {
     elm.trigger( 'mouseleave' );
   }));
 
+  it('should not show tooltips if there is nothing to show - issue #129', inject(function ($compile) {
+
+    elmBody = $compile(angular.element(
+      '<div><span tooltip="">Selector Text</span></div>'
+    ))(scope);
+    scope.$digest();
+    elmBody.find('span').trigger('mouseenter');
+
+    expect(elmBody.children().length).toBe(1);
+  }));
 });
 
 

src/tooltip/tooltip.js

@@ -61,7 +61,12 @@ angular.module( 'ui.bootstrap.tooltip', [] )
             ttWidth,
             ttHeight,
             ttPosition;
-
+
+        //don't show empty tooltips
+        if (!scope.tt_tooltip) {
+          return;
+        }
+
         // If there is a pending remove transition, we must cancel it, lest the
         // toolip be mysteriously removed.
         if ( transitionTimeout ) {