Function test_persisted_history_span

tests/test_history.py:231–279

(persisted_hist)

def test_persisted_history_span(persisted_hist) -> None:
    span = persisted_hist.span("2..")
    assert len(span) == 5
    assert span[2].statement.raw == "second"
    assert span[3].statement.raw == "third"
    assert span[4].statement.raw == "fourth"
    assert span[5].statement.raw == "fifth"
    assert span[6].statement.raw == "sixth"

    span = persisted_hist.span("-2..")
    assert len(span) == 2
    assert span[5].statement.raw == "fifth"
    assert span[6].statement.raw == "sixth"

    span = persisted_hist.span("1..3")
    assert len(span) == 3
    assert span[1].statement.raw == "first"
    assert span[2].statement.raw == "second"
    assert span[3].statement.raw == "third"

    span = persisted_hist.span("2:-1")
    assert len(span) == 5
    assert span[2].statement.raw == "second"
    assert span[3].statement.raw == "third"
    assert span[4].statement.raw == "fourth"
    assert span[5].statement.raw == "fifth"
    assert span[6].statement.raw == "sixth"

    span = persisted_hist.span("-3:4")
    assert len(span) == 1
    assert span[4].statement.raw == "fourth"

    span = persisted_hist.span(":-2", include_persisted=True)
    assert len(span) == 5
    assert span[1].statement.raw == "first"
    assert span[2].statement.raw == "second"
    assert span[3].statement.raw == "third"
    assert span[4].statement.raw == "fourth"
    assert span[5].statement.raw == "fifth"

    span = persisted_hist.span(":-2", include_persisted=False)
    assert len(span) == 1
    assert span[5].statement.raw == "fifth"

    value_errors = ["fred", "fred:joe", "2", "-2", "a..b", "2 ..", "1 : 3", "1:0", "0:3"]
    expected_err = "History indices must be positive or negative integers, and may not be zero."
    for tryit in value_errors:
        with pytest.raises(ValueError, match=expected_err):
            persisted_hist.span(tryit)


def test_history_class_get(hist) -> None: