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from buildstream._frontend.main import prefix_choice_value_proc
import pytest
import click
def test_prefix_choice_value_proc_full_match():
value_proc = prefix_choice_value_proc(['foo', 'bar', 'baz'])
assert("foo" == value_proc("foo"))
assert("bar" == value_proc("bar"))
assert("baz" == value_proc("baz"))
def test_prefix_choice_value_proc_prefix_match():
value_proc = prefix_choice_value_proc(['foo'])
assert ("foo" == value_proc("f"))
def test_prefix_choice_value_proc_ambigous_match():
value_proc = prefix_choice_value_proc(['bar', 'baz'])
assert ("bar" == value_proc("bar"))
assert ("baz" == value_proc("baz"))
with pytest.raises(click.UsageError):
value_proc("ba")
def test_prefix_choice_value_proc_value_not_in_choices():
value_proc = prefix_choice_value_proc(['bar', 'baz'])
with pytest.raises(click.UsageError):
value_proc("foo")
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