Fixed problem with data population and wrote e2e tests #10456

handsontable/src/plugins/mergeCells/__tests__/mergeCells.spec.js

@@ -1721,4 +1721,32 @@ describe('MergeCells', () => {
       expect(coordsOnCellMouseDown).toEqual(jasmine.objectContaining({ row: 0, col: 0 }));
     });
   });
+
+  it('should set/unset "copyable" cell meta attribute after performing merge/unmerge', () => {
+    handsontable({
+      data: Handsontable.helper.createSpreadsheetData(10, 10),
+      mergeCells: true
+    });
+
+    selectCell(2, 2, 4, 4);
+    keyDownUp(['control', 'm']);
+
+    getCell(2, 2);
+
+    expect(getCellMeta(2, 2).copyable).toBe(true);
+    expect(getCellMeta(2, 3).copyable).toBe(false);
+    expect(getCellMeta(2, 4).copyable).toBe(false);
+    expect(getCellMeta(3, 3).copyable).toBe(false);
+    expect(getCellMeta(3, 4).copyable).toBe(false);
+    expect(getCellMeta(4, 4).copyable).toBe(false);
+
+    keyDownUp(['control', 'm']);
+
+    expect(getCellMeta(2, 2).copyable).toBe(true);
+    expect(getCellMeta(2, 3).copyable).toBe(true);
+    expect(getCellMeta(2, 4).copyable).toBe(true);
+    expect(getCellMeta(3, 3).copyable).toBe(true);
+    expect(getCellMeta(3, 4).copyable).toBe(true);
+    expect(getCellMeta(4, 4).copyable).toBe(true);
+  });
 });

handsontable/src/plugins/mergeCells/mergeCells.js

@@ -495,6 +495,7 @@ export class MergeCells extends BasePlugin {
       rangeEach(0, currentCollection.rowspan - 1, (i) => {
         rangeEach(0, currentCollection.colspan - 1, (j) => {
           this.hot.removeCellMeta(currentCollection.row + i, currentCollection.col + j, 'hidden');
+          this.hot.removeCellMeta(currentCollection.row + i, currentCollection.col + j, 'copyable');
         });
       });