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15 changes: 9 additions & 6 deletions pandas/tests/io/excel/test_writers.py
Original file line number Diff line number Diff line change
Expand Up @@ -1353,12 +1353,15 @@ def check_called(func):
del called_write_cells[:]

with pd.option_context("io.excel.xlsx.writer", "dummy"):
register_writer(DummyClass)
writer = ExcelWriter("something.xlsx")
assert isinstance(writer, DummyClass)
df = tm.makeCustomDataframe(1, 1)
check_called(lambda: df.to_excel("something.xlsx"))
check_called(lambda: df.to_excel("something.xls", engine="dummy"))
path = "something.xlsx"
with tm.ensure_clean(path) as filepath:
register_writer(DummyClass)
writer = ExcelWriter(filepath)
assert isinstance(writer, DummyClass)
df = tm.makeCustomDataframe(1, 1)
check_called(lambda: df.to_excel(filepath))
with tm.ensure_clean("something.xls") as filepath:
check_called(lambda: df.to_excel(filepath, engine="dummy"))


@td.skip_if_no("xlrd")
Expand Down