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path: root/tests/atoms/username.test.py
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from edify import Pattern
from edify.atoms import username


def _anchored():
    return Pattern().start_of_input().use(username).end_of_input()


def test_accepts_sample_from_shape():
    assert _anchored()("bob")


def test_rejects_off_shape_input():
    assert not _anchored()("ab")


def test_atom_composes_inside_a_larger_pattern():
    embedded = Pattern().start_of_input().string("v=").use(username).end_of_input()
    assert embedded("v=" + "bob")
    assert not embedded("bob")


def test_atom_regex_string_is_non_empty():
    fragment = username.to_regex_string()
    assert fragment
    assert isinstance(fragment, str)