diff --git a/src/utils.test.js b/src/utils.test.js
new file mode 100644
index 0000000..aa04f17
--- /dev/null
+++ b/src/utils.test.js
@@ -0,0 +1,72 @@
+import { cloneColumnsBlockData } from './utils';
+import { getBlocks } from '@plone/volto/helpers';
+import config from '@plone/volto/registry';
+
+jest.mock('@plone/volto/helpers', () => ({
+  getBlocks: jest.fn(),
+  getBlocksFieldname: jest.fn(() => 'blocks'),
+  getBlocksLayoutFieldname: jest.fn(() => 'blocks_layout'),
+}));
+
+describe('cloneColumnsBlockData', () => {
+  it('should clone the blockData without cloneData', () => {
+    const mockBlockData = {
+      data: {
+        '@type': 'columns',
+        blocks: {
+          block1: {
+            '@type': 'test',
+          },
+        },
+        blocks_layout: {
+          items: ['block1'],
+        },
+      },
+    };
+
+    getBlocks.mockReturnValue([['block1', mockBlockData.data.blocks.block1]]);
+    config.blocks.blocksConfig = {
+      test: {},
+    };
+    const [id, clonedBlockData] = cloneColumnsBlockData(mockBlockData);
+    expect(clonedBlockData.data.blocks.block1).toEqual(
+      mockBlockData.data.blocks.block1,
+    );
+    expect(id).not.toBeNull();
+  });
+
+  it('should clone the blockData with cloneData', () => {
+    const mockBlockData = {
+      data: {
+        '@type': 'columns',
+        blocks: {
+          block1: {
+            '@type': 'test',
+            blocks: {},
+          },
+        },
+        blocks_layout: {
+          items: ['block1'],
+        },
+      },
+    };
+
+    getBlocks.mockReturnValue([['block1', mockBlockData.data.blocks.block1]]);
+    config.blocks.blocksConfig = {
+      test: {
+        cloneData: jest.fn(() => [
+          'test_uuid',
+          mockBlockData.data.blocks.block1,
+        ]),
+      },
+    };
+    const [id, clonedBlockData] = cloneColumnsBlockData(mockBlockData);
+    expect(id).not.toEqual('test_uuid');
+    expect(clonedBlockData.data.blocks.block1).toEqual(
+      mockBlockData.data.blocks.block1,
+    );
+    expect(clonedBlockData.data.blocks['test_uuid']).toEqual(
+      mockBlockData.data.blocks.block1,
+    );
+  });
+});