fix: Measure cell should keep in touch (#479)

Author: zombieJ

package.json

@@ -58,6 +58,7 @@
   },
   "devDependencies": {
     "@types/classnames": "^2.2.9",
+    "@types/enzyme": "^3.10.5",
     "@types/jest": "^25.1.0",
     "@types/react": "^16.9.2",
     "@types/react-dom": "^16.9.0",

src/Body/index.tsx

@@ -114,6 +114,7 @@ function Body<RecordType>({
     getComponent,
     componentWidth,
     emptyNode,
+    flattenColumns,
   ]);
 }
 

tests/FixedColumn.spec.js

@@ -188,4 +188,13 @@ describe('Table.FixedColumn', () => {
         .hasClass('rc-table-cell-fix-left'),
     ).toBeTruthy();
   });
+
+  it('not break measure count', () => {
+    const wrapper = mount(<Table columns={columns.slice(0, 5)} data={data} scroll={{ x: 1000 }} />);
+    expect(wrapper.find('.rc-table-measure-row td')).toHaveLength(5);
+
+    wrapper.setProps({ columns: columns.slice(0, 4) });
+    wrapper.update();
+    expect(wrapper.find('.rc-table-measure-row td')).toHaveLength(4);
+  });
 });