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from __future__ import unicode_literals
from prompt_toolkit.filters import Condition, Never, Always, Filter
from prompt_toolkit.filters.types import CLIFilter, SimpleFilter
from prompt_toolkit.filters.utils import to_cli_filter, to_simple_filter
from prompt_toolkit.filters.cli import HasArg, HasFocus, HasSelection
import pytest
def test_condition_filter_args():
c = Condition(lambda a, b, c: True)
assert c.test_args('a', 'b', 'c')
assert not c.test_args()
assert not c.test_args('a')
assert not c.test_args('a', 'b')
assert not c.test_args('a', 'b', 'c', 'd')
c2 = Condition(lambda a, b=1: True)
assert c2.test_args('a')
assert c2.test_args('a', 'b')
assert not c2.test_args('a', 'b', 'c')
assert not c2.test_args()
c3 = Condition(lambda *a: True)
assert c3.test_args()
assert c3.test_args('a')
assert c3.test_args('a', 'b')
def test_and_arg():
c1 = Condition(lambda a: True)
c2 = Condition(lambda a: True)
c3 = c1 & c2
assert c3.test_args('a')
assert not c3.test_args()
assert not c3.test_args('a', 'b')
def test_or_arg():
c1 = Condition(lambda a: True)
c2 = Condition(lambda a: True)
c3 = c1 | c2
assert c3.test_args('a')
assert not c3.test_args()
assert not c3.test_args('a', 'b')
def test_condition():
c = Condition(lambda a: a % 2 == 0)
assert c(4)
assert c(6)
assert not c(5)
assert not c(3)
def test_never():
assert not Never()()
def test_always():
assert Always()()
def test_invert():
assert not (~Always())()
assert (~Never()())
c = ~Condition(lambda: False)
assert c()
def test_or():
for a in (True, False):
for b in (True, False):
c1 = Condition(lambda: a)
c2 = Condition(lambda: b)
c3 = c1 | c2
assert isinstance(c3, Filter)
assert c3() == a or b
def test_and():
for a in (True, False):
for b in (True, False):
c1 = Condition(lambda: a)
c2 = Condition(lambda: b)
c3 = c1 & c2
assert isinstance(c3, Filter)
assert c3() == (a and b)
def test_cli_filter():
c1 = Condition(lambda cli: True)
assert isinstance(c1, CLIFilter)
assert not isinstance(c1, SimpleFilter)
c2 = Condition(lambda: True)
assert not isinstance(c2, CLIFilter)
assert isinstance(c2, SimpleFilter)
c3 = c1 | c2
assert not isinstance(c3, CLIFilter)
assert not isinstance(c3, SimpleFilter)
c4 = Condition(lambda cli: True)
c5 = Condition(lambda cli: True)
c6 = c4 & c5
c7 = c4 | c5
assert isinstance(c6, CLIFilter)
assert isinstance(c7, CLIFilter)
assert not isinstance(c6, SimpleFilter)
assert not isinstance(c7, SimpleFilter)
c8 = Condition(lambda *args: True)
assert isinstance(c8, CLIFilter)
assert isinstance(c8, SimpleFilter)
def test_to_cli_filter():
f1 = to_cli_filter(True)
f2 = to_cli_filter(False)
f3 = to_cli_filter(Condition(lambda cli: True))
f4 = to_cli_filter(Condition(lambda cli: False))
assert isinstance(f1, CLIFilter)
assert isinstance(f2, CLIFilter)
assert isinstance(f3, CLIFilter)
assert isinstance(f4, CLIFilter)
assert f1(None)
assert not f2(None)
assert f3(None)
assert not f4(None)
with pytest.raises(TypeError):
to_cli_filter(4)
with pytest.raises(TypeError):
to_cli_filter(Condition(lambda: True))
def test_to_simple_filter():
f1 = to_simple_filter(True)
f2 = to_simple_filter(False)
f3 = to_simple_filter(Condition(lambda: True))
f4 = to_simple_filter(Condition(lambda: False))
assert isinstance(f1, SimpleFilter)
assert isinstance(f2, SimpleFilter)
assert isinstance(f3, SimpleFilter)
assert isinstance(f4, SimpleFilter)
assert f1()
assert not f2()
assert f3()
assert not f4()
with pytest.raises(TypeError):
to_simple_filter(4)
with pytest.raises(TypeError):
to_simple_filter(Condition(lambda cli: True))
def test_cli_filters():
assert isinstance(HasArg(), CLIFilter)
assert isinstance(HasFocus('BUFFER_NAME'), CLIFilter)
assert isinstance(HasSelection(), CLIFilter)
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