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"""Tests for :class:`DanglingQuantifierError` raised at emit time."""
import pytest
from edify import Pattern, RegexBuilder
from edify.errors.quantifier import DanglingQuantifierError
def test_to_regex_string_raises_when_a_bare_quantifier_has_no_operand():
with pytest.raises(DanglingQuantifierError):
RegexBuilder().exactly(3).to_regex_string()
def test_to_regex_string_raises_for_optional_with_no_operand():
with pytest.raises(DanglingQuantifierError):
RegexBuilder().optional().to_regex_string()
def test_to_regex_string_raises_for_zero_or_more_with_no_operand():
with pytest.raises(DanglingQuantifierError):
RegexBuilder().zero_or_more().to_regex_string()
def test_to_regex_string_raises_for_one_or_more_with_no_operand():
with pytest.raises(DanglingQuantifierError):
RegexBuilder().one_or_more().to_regex_string()
def test_to_regex_string_raises_for_between_with_no_operand():
with pytest.raises(DanglingQuantifierError):
RegexBuilder().between(2, 5).to_regex_string()
def test_pattern_to_regex_string_raises_when_a_bare_quantifier_has_no_operand():
with pytest.raises(DanglingQuantifierError):
Pattern().exactly(3).to_regex_string()
def test_to_regex_raises_when_a_bare_quantifier_has_no_operand():
with pytest.raises(DanglingQuantifierError):
RegexBuilder().at_least(2).to_regex()
def test_message_hints_at_appending_an_operand():
with pytest.raises(DanglingQuantifierError, match="Append an element"):
RegexBuilder().exactly(3).to_regex_string()
def test_dangling_quantifier_error_message_contains_expected_text():
error = DanglingQuantifierError()
assert "Dangling quantifier" in str(error)
assert "no operand" in str(error)
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