fix: 遗留清理（枚举同源/边界防御/断言补强）

tests/test_formatting_detector.py

@@ -35,6 +35,19 @@ def test_cell_formatting_none_when_plain():
     assert cell_formatting(ws["A1"]) is None
 
 
+def test_cell_formatting_detects_font_color():
+    from openpyxl.styles import Font
+    wb = Workbook()
+    ws = wb.active
+    ws["A1"] = "x"
+    f = copy(ws["A1"].font)
+    f.color = Font(color="FF0000FF").color
+    ws["A1"].font = f
+    fmt = cell_formatting(ws["A1"])
+    assert fmt is not None
+    assert fmt.font_color is not None
+
+
 def test_cell_comment_returns_obj():
     wb = make_wb()
     cm = cell_comment(wb.active["A2"], "f.xlsx")

tests/test_free_text_extractor.py

@@ -1,4 +1,4 @@
-from genesis.data_models import CellValue, ExcelTable, SheetType
+from genesis.data_models import CellValue, ExcelTable, ExtractionMethod, SheetType
 from genesis.parsers.free_text_extractor import build_free_text_table, extract_text_blocks
 
 
@@ -15,3 +15,8 @@ def test_build_free_text_table():
     assert len(table.rows) == 2
     assert isinstance(table.rows[0]["text"], CellValue)
     assert table.rows[0]["text"].value == "A"
+
+
+def test_free_text_uses_enum_value():
+    table = build_free_text_table("メモ", ["A"], "f.xlsx")
+    assert table.extraction_method == ExtractionMethod.LLM_FROM_FREE_TEXT.value

tests/test_sheet_nature.py

@@ -19,4 +19,14 @@ def test_free_text_many_empty_rows():
 def test_header_row_index():
     m = [["機能ID", "名前"], ["1", "田中"]]
     assert find_header_row(m) == 0
-    assert find_header_row([["自由テキスト"]]) == -1
+    assert find_header_row([["自由テキスト"]]) == -1
+
+
+def test_classify_sheet_mixed_with_bullet_line():
+    m = [["ID", "名前"], ["1", "田中"], ["・備考行"]]
+    assert classify_sheet(m) == SheetNature.MIXED
+
+
+def test_classify_sheet_mixed_with_square_line():
+    m = [["ID", "名前"], ["1", "田中"], ["■備考行"]]
+    assert classify_sheet(m) == SheetNature.MIXED

tests/test_table_extractor.py

@@ -1,4 +1,4 @@
-from genesis.data_models import CellValue, ExcelTable, SheetType
+from genesis.data_models import CellValue, ExcelTable, ExtractionMethod, SheetType
 from genesis.parsers.merge_fill import forward_fill
 from genesis.parsers.table_extractor import column_letter, extract_table
 
@@ -37,4 +37,16 @@ def test_extract_table_basic():
     assert isinstance(first["ID"], CellValue)
     assert first["ID"].value == "1"
     assert first["ID"].provenance.sheet_name == "社員一覧"
-    assert first["ID"].provenance.column == "A"
+    assert first["ID"].provenance.column == "A"
+
+
+def test_extract_table_uses_enum_value():
+    matrix = [["ID"], ["1"]]
+    table = extract_table("社員", matrix, "f.xlsx", SheetType.FUNCTION)
+    assert table.extraction_method == ExtractionMethod.OPENPYXL.value
+
+
+def test_forward_fill_ignores_invalid_range():
+    matrix = [["A"], ["B"]]
+    assert forward_fill(matrix, [(0, 1, 2, 1)]) == matrix  # min_row=0 非法 → 不崩溃不改数据
+    assert forward_fill(matrix, [(9, 9, 9, 9)]) == matrix  # 越界 → 不崩溃