def test_remove_abbr(self):
# Set up test objects
test_repo = ConvertRepo()
test_type = ConvertType(test_repo, "test_type")
test_type.base_unit = ConvertUnit(test_type, ["base_unit"], 1)
test_unit_names = ["name1", "name2"]
test_value = 1337
test_unit = ConvertUnit(test_type, test_unit_names, test_value)
test_unit.add_abbr("abbr1")
test_unit.add_abbr("abbr2")
# Test setup
assert "abbr1" in test_unit.abbr_list
assert "abbr2" in test_unit.abbr_list
assert len(test_unit.abbr_list) == 2
# Remove abbreviation
test_unit.remove_abbr("abbr1")
# Test changes
assert len(test_unit.abbr_list) == 1
assert "abbr2" in test_unit.abbr_list
assert "abbr1" not in test_unit.abbr_list
