diff --git "a/tests/testdata/data/csv_data/30\345\244\251\347\225\231\345\255\230\347\216\207_csv_two_header.csv" "b/tests/testdata/data/csv_data/30\345\244\251\347\225\231\345\255\230\347\216\207_csv_two_header.csv"
new file mode 100644
index 00000000..b0585488
--- /dev/null
+++ "b/tests/testdata/data/csv_data/30\345\244\251\347\225\231\345\255\230\347\216\207_csv_two_header.csv"
@@ -0,0 +1,9 @@
+time,metric
+date,rate
+20240101,0.9375
+20240201,0.9744
+20240301,0.9767
+20240401,0.9375
+20240501,0.9091
+20240601,0.9474
+20240701,0.9667
\ No newline at end of file
diff --git "a/tests/testdata/data/excel_data/30\345\244\251\347\225\231\345\255\230\347\216\207_excel_one_header.xlsx" "b/tests/testdata/data/excel_data/30\345\244\251\347\225\231\345\255\230\347\216\207_excel_one_header.xlsx"
new file mode 100644
index 00000000..7f4e5079
Binary files /dev/null and "b/tests/testdata/data/excel_data/30\345\244\251\347\225\231\345\255\230\347\216\207_excel_one_header.xlsx" differ
diff --git "a/tests/testdata/data/excel_data/30\345\244\251\347\225\231\345\255\230\347\216\207_excel_two_header.xls" "b/tests/testdata/data/excel_data/30\345\244\251\347\225\231\345\255\230\347\216\207_excel_two_header.xls"
new file mode 100644
index 00000000..039af979
Binary files /dev/null and "b/tests/testdata/data/excel_data/30\345\244\251\347\225\231\345\255\230\347\216\207_excel_two_header.xls" differ