Update test_autofilter_xlsxwriter.py

Author: antznette1

pandas/tests/io/excel/test_autofilter_xlsxwriter.py

@@ -1,25 +1,51 @@
 import io
+import zipfile
+
 import pytest
+
 import pandas as pd
 
 pytest.importorskip("xlsxwriter")
 openpyxl = pytest.importorskip("openpyxl")
 
 
-def test_to_excel_xlsxwriter_autofilter_and_bold():
+def test_to_excel_xlsxwriter_autofilter():
+    df = pd.DataFrame({"A": [1, 2], "B": [3, 4]})
+    buf = io.BytesIO()
+    with pd.ExcelWriter(buf, engine="xlsxwriter") as writer:
+        # Test autofilter
+        df.to_excel(writer, index=False, autofilter=True)
+    buf.seek(0)
+    with zipfile.ZipFile(buf) as zf:
+        with zf.open("xl/worksheets/sheet1.xml") as f:
+            sheet = f.read().decode("utf-8")
+    # Check for autofilter
+    assert '<autoFilter ref="A1:B3"' in sheet
+
+
+def test_to_excel_xlsxwriter_styler_bold_header():
     df = pd.DataFrame({"A": [1, 2], "B": [3, 4]})
     buf = io.BytesIO()
     with pd.ExcelWriter(buf, engine="xlsxwriter") as writer:
-        df.to_excel(
-            writer,
-            index=False,
-            engine_kwargs={"autofilter_header": True, "header_bold": True},
-        )
+        # Test header bold using Styler
+        df.style.set_properties(
+            **{"font-weight": "bold"}, subset=pd.IndexSlice[0, :]
+        ).to_excel(writer, index=False)
     buf.seek(0)
-    wb = openpyxl.load_workbook(buf)
-    ws = wb.active
-    # Autofilter should be set spanning header+data
-    assert ws.auto_filter is not None
-    assert ws.auto_filter.ref is not None and ws.auto_filter.ref != ""
-    # Header row (row 1) should be bold
-    assert all(ws.cell(row=1, column=c).font.bold for c in range(1, df.shape[1] + 1))
+    with zipfile.ZipFile(buf) as zf:
+        # Check styles.xml for the bold font definition
+        with zf.open("xl/styles.xml") as f:
+            styles = f.read().decode("utf-8")
+            print("\n===== STYLES XML =====")
+            print(styles)
+            print("===========================\n")
+        # Check sheet1.xml for style references
+        with zf.open("xl/worksheets/sheet1.xml") as f:
+            sheet = f.read().decode("utf-8")
+            print("\n===== SHEET1 XML =====")
+            print(sheet)
+            print("===========================\n")
+    # Check for bold style in the styles.xml and its reference in sheet1.xml
+    assert "<b/>" in styles, "Bold style not found in styles.xml"
+    # Check that the header row (first row) uses a style with bold
+    assert 'r="1"' in sheet, "Header row not found in sheet1.xml"