test(dropzone): add dropzone tests

cypress/e2e/item/upload/dropzoneUpload.cy.ts

@@ -0,0 +1,29 @@
+import { buildItemPath } from '@/config/paths';
+import { DROPZONE_HELPER_ID } from '@/config/selectors';
+
+import { SAMPLE_ITEMS, SAMPLE_PUBLIC_ITEMS } from '../../../fixtures/items';
+
+describe('home screen - dropzone helper visibility', () => {
+  beforeEach(() => {
+    cy.setUpApi();
+  });
+
+  it('should display dropzone helper on the home screen when no items', () => {
+    cy.visit('/');
+    cy.get(`#${DROPZONE_HELPER_ID}`).should('be.visible');
+  });
+});
+
+describe('empty folder - dropzone helper visibility', () => {
+  it('user logs in - show dropzone helper when no items', () => {
+    cy.setUpApi(SAMPLE_ITEMS);
+    cy.visit(buildItemPath(SAMPLE_ITEMS.items[1].id));
+    cy.get(`#${DROPZONE_HELPER_ID}`).should('be.visible');
+  });
+
+  it('user logs out - hide dropzone helper', () => {
+    cy.setUpApi({ ...SAMPLE_PUBLIC_ITEMS, currentMember: null });
+    cy.visit(buildItemPath(SAMPLE_PUBLIC_ITEMS.items[2].id));
+    cy.get(`#${DROPZONE_HELPER_ID}`).should('not.exist');
+  });
+});

src/components/main/ItemsTable.tsx

@@ -288,7 +288,7 @@ const ItemsTable = ({
         showOnlyMe={showOnlyMe}
       />
       {itemId && <FolderDescription itemId={itemId} />}
-      {shouldShowDropzoneHelper && canEditItem ? (
+      {shouldShowDropzoneHelper && (!parentItem || canEditItem) ? (
         <DropzoneHelper />
       ) : (
         <GraaspTable