How to use the pycel.excelformula.ExcelFormula.build_eval_context function in pycel

def test_bool_funcs(formula, result):
    eval_ctx = ExcelFormula.build_eval_context(lambda x: None, None)
    assert eval_ctx(ExcelFormula(formula)) == result

def test_if_args_error():
    eval_context = ExcelFormula.build_eval_context(lambda x: 1, lambda x: 1)

    assert 0 == eval_context(ExcelFormula('=if(1,0)'))
    assert VALUE_ERROR == eval_context(ExcelFormula('=if(#VALUE!,1)'))
    assert VALUE_ERROR == eval_context(ExcelFormula('=if(#VALUE!,1,0)'))
    assert VALUE_ERROR == eval_context(ExcelFormula('=if(1,#VALUE!,0)'))
    assert VALUE_ERROR == eval_context(ExcelFormula('=if(0,1,#VALUE!)'))

def test_value_error(formula, result):
    eval_ctx = ExcelFormula.build_eval_context(
        lambda x: VALUE_ERROR, lambda x: [[1, 1], [1, VALUE_ERROR]],
        logging.getLogger('pycel_x'))

    assert eval_ctx(ExcelFormula(formula)) == result

def test_error_logging(caplog):
    eval_ctx = ExcelFormula.build_eval_context(
        lambda x: DIV0, lambda x: [[1, 1], [1, DIV0]],
        logging.getLogger('pycel_x'))

    caplog.set_level(logging.INFO)
    assert 3 == eval_ctx(ExcelFormula('=iferror(1/0,3)'))
    assert 1 == len(caplog.records)
    assert "INFO" == caplog.records[0].levelname
    assert "1 Div 0" in caplog.records[0].message

    assert DIV0 == eval_ctx(ExcelFormula('=1/0'))
    assert 2 == len(caplog.records)
    assert "WARNING" == caplog.records[1].levelname

    message = """return PYTHON_AST_OPERATORS[op](left_op, right_op)
ZeroDivisionError: division by zero
Eval: 1 / 0

def test_build_eval_context(result, formula):
    eval_context = ExcelFormula.build_eval_context(lambda x: 1, lambda x: 1)
    assert eval_context(ExcelFormula(formula)) == pytest.approx(result)

def empty_eval_context():
    return ExcelFormula.build_eval_context(
        None, None, logging.getLogger('pycel_x'))

def test_numerics_type_coercion(formula, result):
    eval_ctx = ExcelFormula.build_eval_context(lambda x: 3.0, None)
    assert eval_ctx(ExcelFormula(formula)) == result

def test_math_wrap():
    eval_context = ExcelFormula.build_eval_context(
        lambda x: None, lambda x: DIV0)

    assert 1 == eval_context(ExcelFormula('=1 + sin(A1)'))
    assert DIV0 == eval_context(ExcelFormula('=1 + sin(A1:B1)'))

    assert 1 == eval_context(ExcelFormula('=1 + abs(A1)'))
    assert DIV0 == eval_context(ExcelFormula('=1 + abs(A1:B1)'))

def eval(self):
        if self._eval is None:
            eval_ctx = ExcelFormula.build_eval_context(
                self._evaluate, self._evaluate_range,
                self.log, plugins=self._plugin_modules)

            if self.cycles:
                def _eval(cell, cse_array_address=None):
                    cell.start_calcs()
                    return eval_ctx(
                        cell.formula, cse_array_address=cse_array_address)

            else:
                def _eval(cell, cse_array_address=None):
                    return eval_ctx(
                        cell.formula, cse_array_address=cse_array_address)

            self._eval = _eval