[DW-1328] added the create and delete role api for test preconditions (#5052)

* added the create and delete role api for test preconditions

* added the required visibility conditions, for the method to work consistently across apps

* removed the visibility conditions that are not necessary

lib/testing/src/lib/core/actions/identity/roles.service.ts

@@ -25,6 +25,24 @@ export class RolesService {
         this.api = api;
     }
 
+    async createRole(roleName: string): Promise<any> {
+        const path = '/roles';
+        const method = 'POST';
+        const queryParams = {}, postBody = {
+            name: roleName + 'TestRole'
+        };
+        const data = await this.api.performIdentityOperation(path, method, queryParams, postBody);
+        return data;
+    }
+
+    async deleteRole(roleId): Promise<any> {
+        const path = `/roles-by-id/${roleId}`;
+        const method = 'DELETE';
+        const queryParams = {}, postBody = {};
+        const data = await this.api.performIdentityOperation(path, method, queryParams, postBody);
+        return data;
+    }
+
     async getRoleIdByRoleName(roleName): Promise<any> {
         const path = `/roles`;
         const method = 'GET';

lib/testing/src/lib/core/pages/pagination.page.ts

@@ -41,6 +41,7 @@ export class PaginationPage {
         await browser.executeScript(`document.querySelector('div[class*="adf-pagination__perpage-block"] button').click();`);
         await BrowserVisibility.waitUntilElementIsVisible(this.pageSelectorDropDown);
         const itemsPerPage = element.all(by.cssContainingText('.mat-menu-item', numberOfItem)).first();
+        await BrowserVisibility.waitUntilElementIsPresent(itemsPerPage);
         await BrowserActions.click(itemsPerPage);
         await BrowserVisibility.waitUntilElementIsNotVisible(this.pageSelectorDropDown);
     }