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# Copyright (c) 2015 Mirantis, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
from yaql.language import exceptions
from yaql.language import specs
from yaql.language import yaqltypes
import yaql.tests
class TestMiscellaneous(yaql.tests.TestCase):
def test_pass_lambda_from_code(self):
self.assertEqual(
[],
list(self.context('where', self.engine, [1, 2, 3])(False))
)
self.assertEqual(
[2, 3],
list(self.context('where', self.engine, [1, 2, 3])(
lambda t: t > 1))
)
def test_bool_is_not_an_integer(self):
@specs.parameter('arg', yaqltypes.Integer())
def foo(arg):
return arg
self.context.register_function(foo)
self.assertEqual(2, self.eval('foo(2)'))
self.assertRaises(
exceptions.NoMatchingFunctionException,
self.eval, 'foo(true)')
def test_nullable_collections(self):
@specs.parameter('arg', yaqltypes.Sequence())
def foo1(arg):
return arg is None
@specs.parameter('arg', yaqltypes.Sequence(nullable=True))
def foo2(arg):
return arg is None
@specs.parameter('arg', yaqltypes.Iterable())
def bar1(arg):
return arg is None
@specs.parameter('arg', yaqltypes.Iterable(nullable=True))
def bar2(arg):
return arg is None
@specs.parameter('arg', yaqltypes.Iterator())
def baz1(arg):
return arg is None
@specs.parameter('arg', yaqltypes.Iterator(nullable=True))
def baz2(arg):
return arg is None
for func in (foo1, foo2, bar1, bar2, baz1, baz2):
self.context.register_function(func)
self.assertFalse(self.eval('foo1([1, 2])'))
self.assertRaises(
exceptions.NoMatchingFunctionException,
self.eval, 'foo1(null)')
self.assertFalse(self.eval('foo2([1, 2])'))
self.assertTrue(self.eval('foo2(null)'))
self.assertFalse(self.eval('bar1([1, 2])'))
self.assertRaises(
exceptions.NoMatchingFunctionException,
self.eval, 'bar1(null)')
self.assertFalse(self.eval('bar2([1, 2])'))
self.assertTrue(self.eval('bar2(null)'))
self.assertFalse(self.eval('baz1($)', data=iter([1, 2])))
self.assertRaises(
exceptions.NoMatchingFunctionException,
self.eval, 'baz1(null)')
self.assertFalse(self.eval('baz2($)', data=iter([1, 2])))
self.assertTrue(self.eval('baz2(null)'))
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