How to use the covimerage.coveragepy.CoverageWrapperException function in covimerage

cov = CoverageWrapper(data_file=coverage_fileobj)
        assert cov._cov_obj.config.report_include is None
        assert cov.lines == {vim_src: [3, 8, 9, 11, 13, 14, 15, 17, 23]}
        cov.report()
        out, err = capfd.readouterr()
        assert 'test_plugin/conditional_function.vim' in out
        assert err == ''

        coveragerc = str(tmpdir.join('.coveragerc'))
        with open(coveragerc, 'w') as f:
            f.write('[report]\ninclude = foo/*,bar/*')
        coverage_fileobj.seek(0)
        cov = CoverageWrapper(data_file=coverage_fileobj)
        assert cov._cov_obj.config.report_include == ['foo/*', 'bar/*']
        with pytest.raises(CoverageWrapperException) as excinfo:
            cov.report()
        assert excinfo.value.args == ('No data to report. (CoverageException)',)
        out, err = capfd.readouterr()
        assert out.splitlines() == [
            'Name    Stmts   Miss  Cover',
            '---------------------------']
        assert err == ''

def test_filereporter_source_exception(mocker, devnull):
    from covimerage.coveragepy import CoverageWrapperException, FileReporter

    class CustomException(Exception):
        pass

    m = mocker.mock_open()
    m.return_value.read.side_effect = CustomException
    mocker.patch('covimerage.coveragepy.open', m)

    f = FileReporter(devnull.name)
    with pytest.raises(CoverageWrapperException) as excinfo:
        f.source()

    assert isinstance(excinfo.value.orig_exc, CustomException)

def test_coveragewrapperexception():
    from covimerage.coveragepy import CoverageWrapperException

    assert CoverageWrapperException('foo').format_message() == 'foo'

    with pytest.raises(CoverageWrapperException) as excinfo:
        try:
            raise Exception('orig')
        except Exception as orig_exc:
            raise CoverageWrapperException('bar', orig_exc=orig_exc)
    assert excinfo.value.format_message() == "bar (Exception: orig)"

def test_coveragewrapperexception():
    from covimerage.coveragepy import CoverageWrapperException

    assert CoverageWrapperException('foo').format_message() == 'foo'

    with pytest.raises(CoverageWrapperException) as excinfo:
        try:
            raise Exception('orig')
        except Exception as orig_exc:
            raise CoverageWrapperException('bar', orig_exc=orig_exc)
    assert excinfo.value.format_message() == "bar (Exception: orig)"