From b0509c90ca26f1a312881824ec3349bf364af01d Mon Sep 17 00:00:00 2001
From: IhorKaleniuk666 <ihor.kaleniuk@newgen.company>
Date: Mon, 1 Dec 2025 14:34:05 +0200
Subject: [PATCH] add test with page ID

---
 .../pages/pages-same-id-on-different-pages.ts | 111 ++++++++++++++++++
 1 file changed, 111 insertions(+)
 create mode 100644 packages/core/test/specs/pages/pages-same-id-on-different-pages.ts

diff --git a/packages/core/test/specs/pages/pages-same-id-on-different-pages.ts b/packages/core/test/specs/pages/pages-same-id-on-different-pages.ts
new file mode 100644
index 000000000..328b931f7
--- /dev/null
+++ b/packages/core/test/specs/pages/pages-same-id-on-different-pages.ts
@@ -0,0 +1,111 @@
+import Editor from '../../../src/editor';
+import EditorModel from '../../../src/editor/model/Editor';
+import ComponentWrapper from '../../../src/dom_components/model/ComponentWrapper';
+
+describe('Pages with same component ids across pages', () => {
+  let editor: Editor;
+  let em: EditorModel;
+  let pm: Editor['Pages'];
+  let domc: Editor['Components'];
+  const getTitle = (wrapper: ComponentWrapper) => wrapper.components().at(0)!.components().at(0)!;
+
+  beforeAll(() => {
+    editor = new Editor({
+      pageManager: {
+        pages: [
+          {
+            id: 'p1',
+            frames: [
+              {
+                component: {
+                  type: 'wrapper',
+                  attributes: { id: 'body' },
+                  components: [
+                    {
+                      tagName: 'section',
+                      components: [
+                        {
+                          tagName: 'h1',
+                          type: 'text',
+                          attributes: { id: 'main-title' },
+                          components: [{ type: 'textnode', content: 'A' }],
+                        },
+                      ],
+                    },
+                  ],
+                },
+              },
+            ],
+          },
+          {
+            id: 'p2',
+            frames: [
+              {
+                component: {
+                  type: 'wrapper',
+                  attributes: { id: 'body' },
+                  components: [
+                    {
+                      tagName: 'section',
+                      components: [
+                        {
+                          tagName: 'h1',
+                          type: 'text',
+                          attributes: { id: 'main-title' },
+                          components: [{ type: 'textnode', content: 'B' }],
+                        },
+                      ],
+                    },
+                  ],
+                },
+              },
+            ],
+          },
+        ],
+      },
+    });
+
+    em = editor.getModel();
+    pm = em.Pages;
+    domc = em.Components;
+    pm.onLoad();
+  });
+
+  afterAll(() => {
+    editor.destroy();
+  });
+
+  test('Handles pages with components having the same id across pages', () => {
+    const pages = pm.getAll();
+    expect(pages.length).toBe(2);
+
+    const p1 = pages[0];
+    const p2 = pages[1];
+
+    const w1 = p1.getMainComponent();
+    const w2 = p2.getMainComponent();
+
+    expect(w1.getId()).toBe('body');
+    expect(w2.getId()).toBe('body');
+
+    const t1 = getTitle(w1);
+    const t2 = getTitle(w2);
+
+    // IDs should be preserved per page but stored uniquely in the shared map
+    expect(t1.getId()).toBe('main-title');
+    expect(t2.getId()).toBe('main-title');
+
+    const all = domc.allById();
+
+    expect(all['body']).toBe(w1);
+    expect(all['body-2']).toBe(w2);
+    expect(all['main-title']).toBe(t1);
+    expect(all['main-title-2']).toBe(t2);
+
+    const html1 = editor.getHtml({ component: w1 });
+    const html2 = editor.getHtml({ component: w2 });
+
+    expect(html1).toContain('A');
+    expect(html2).toContain('B');
+  });
+});