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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 TestResolution(yaql.tests.TestCase):
def test_resolve_parameter_count_single_layer(self):
def f1(a):
return a
def f2(a, b):
return a + b
self.context.register_function(f1, name='f')
self.context.register_function(f2, name='f')
self.assertEqual(12, self.eval('f(12)'))
self.assertEqual(25, self.eval('f(12, 13)'))
def test_resolve_parameter_count_multi_layer(self):
def f1(a):
return a
def f2(a, b):
return a + b
context1 = self.context.create_child_context()
context1.register_function(f1, name='f')
context2 = context1.create_child_context()
context2.register_function(f2, name='f')
self.assertEqual(12, self.eval('f(12)', context=context2))
self.assertEqual(25, self.eval('f(12, 13)', context=context2))
def test_layer_override(self):
def f1(a):
return a
def f2(a):
return -a
context1 = self.context.create_child_context()
context1.register_function(f1, name='f')
context2 = context1.create_child_context()
context2.register_function(f2, name='f')
self.assertEqual(-12, self.eval('f(12)', context=context2))
def test_single_layer_ambiguity(self):
def f1(a):
return a
def f2(a):
return -a
context1 = self.context.create_child_context()
context1.register_function(f1, name='f')
context1.register_function(f2, name='f')
self.assertRaises(
exceptions.AmbiguousFunctionException,
self.eval, 'f(12)', context=context1)
def test_single_layer_laziness_ambiguity(self):
@specs.parameter('a', yaqltypes.Lambda())
def f1(a):
return a()
def f2(a):
return -a
def f3(a, b):
return a + b
context1 = self.context.create_child_context()
context1.register_function(f1, name='f')
context1.register_function(f2, name='f')
context1.register_function(f3, name='f')
self.assertRaises(
exceptions.AmbiguousFunctionException,
self.eval, 'f(2 * $)', data=3, context=context1)
self.assertEqual(25, self.eval('f(12, 13)', context=context1))
def test_multi_layer_laziness_ambiguity(self):
@specs.parameter('a', yaqltypes.Lambda())
def f1(a, b):
return a() + b
@specs.parameter('a', yaqltypes.Lambda())
def f2(a, b):
return a() + b
@specs.parameter('b', yaqltypes.Lambda())
def f3(a, b):
return -a - b()
@specs.parameter('a', yaqltypes.Lambda())
def f4(a, b):
return -a() + b
context1 = self.context.create_child_context()
context1.register_function(f1, name='foo')
context1.register_function(f2, name='bar')
context2 = context1.create_child_context()
context2.register_function(f3, name='foo')
context2.register_function(f4, name='bar')
self.assertRaises(
exceptions.AmbiguousFunctionException,
self.eval, 'foo(12, 13)', context=context2)
self.assertEqual(
1,
self.eval('bar(12, 13)', context=context2))
def test_ambiguous_method(self):
self.context.register_function(
lambda c, s: 1, name='select', method=True)
self.assertRaises(
exceptions.AmbiguousMethodException,
self.eval, '[1,2].select($)')
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