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A test to check that NumberFormater without the format_column method raises an error #591

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3 changes: 2 additions & 1 deletion requirements-tests.txt
Original file line number Diff line number Diff line change
@@ -1,7 +1,8 @@
pytest==7.1.2
pytest-mock
coverage
coveralls
bokeh
nbval
pytest-cov
pygments
pygments
6 changes: 6 additions & 0 deletions tests/test_tables.py
Original file line number Diff line number Diff line change
Expand Up @@ -572,6 +572,12 @@ def test_join(table, table2):
z | 1 | 10 | 10
""")

def test_set_format_with_no_format_column(mocker, table):
MockNumberFormatter = mocker.NonCallableMock(spec=NumberFormatter)
del MockNumberFormatter.format_column
with pytest.raises(Exception):
table.set_format('count', MockNumberFormatter)

def test_join_html(table, table2):
"""Test that join doesn't crash with formatting."""
t = table
Expand Down