update at 2026-02-14 11:16:40

tests/miniapp.spec.ts

@@ -87,4 +87,20 @@ describe('miniapp utils sankey', () => {
     expect(table.headers).toEqual(['人數']);
     expect(table.rows).toEqual([['张三']]);
   });
+
+  it('文件名后缀缺失时，仍可根据二进制魔数识别 xlsx', () => {
+    const sheet = XLSX.utils.aoa_to_sheet([
+      ['source', 'target', 'value'],
+      ['A', 'B', 1]
+    ]);
+    const workbook = XLSX.utils.book_new();
+    XLSX.utils.book_append_sheet(workbook, sheet, 'S1');
+    const buffer = XLSX.write(workbook, { bookType: 'xlsx', type: 'buffer' });
+    const arrayBuffer = buffer.buffer.slice(buffer.byteOffset, buffer.byteOffset + buffer.byteLength);
+
+    const table = parseTableByFileName('upload.bin', arrayBuffer);
+
+    expect(table.headers).toEqual(['source', 'target', 'value']);
+    expect(table.rows).toEqual([['A', 'B', '1']]);
+  });
 });