refactoring

kafka-ui-react-app/src/components/Topics/Details/Messages/Messages.tsx

@@ -195,7 +195,7 @@ const Messages: React.FC<Props> = ({
   };
 
   if (!isFetched) {
-    return <PageLoader isFullHeight={false} />;
+    return <PageLoader />;
   }
 
   return (

kafka-ui-react-app/src/components/common/Dashboard/__tests__/MetricsWrapper.spec.tsx

@@ -8,17 +8,17 @@ describe('MetricsWrapper', () => {
     const component = shallow(
       <MetricsWrapper wrapperClassName={className} multiline />
     );
-    expect(component.find(`.${className}`).exists()).toBeTruthy();
-    expect(component.find('.level-multiline').exists()).toBeTruthy();
+    expect(component.exists(`.${className}`)).toBeTruthy();
+    expect(component.exists('.level-multiline')).toBeTruthy();
   });
 
   it('correctly renders children', () => {
     let component = shallow(<MetricsWrapper />);
-    expect(component.find('.subtitle').exists()).toBeFalsy();
+    expect(component.exists('.subtitle')).toBeFalsy();
 
     const title = 'title';
     component = shallow(<MetricsWrapper title={title} />);
-    expect(component.find('.subtitle').exists()).toBeTruthy();
+    expect(component.exists('.subtitle')).toBeTruthy();
     expect(component.text()).toEqual(title);
   });
 });