[ACA-1928] e2e improvements - part1 (#883)

* refactor Mark as favourite tests
rename method to be more clear
create separate methods for some checks and actions

* forgot some changes

* refactor delete-undo tests

* some more refactoring

* fix

e2e/components/data-table/data-table.ts

@@ -252,10 +252,6 @@ export class DataTable extends Component {
   }
 
   async getItemLocationTooltip(name: string) {
-    return await this.getItemLocationEl(name).$('a').getAttribute('title');
-  }
-
-  async getItemLocationTileAttr(name: string) {
     const location = this.getItemLocationEl(name).$('a');
     const condition = () => location.getAttribute('title').then(value => value && value.length > 0);
 
@@ -319,4 +315,8 @@ export class DataTable extends Component {
   async getLibraryRole(name: string) {
     return await this.getRowByName(name).element(by.css(DataTable.selectors.libraryRole)).getText();
   }
+
+  async isItemPresent(name: string) {
+    return await this.getRowByName(name).isPresent();
+  }
 }