def test_regression_test_calling_terms_directly(self):
'Tests that invoke(term, ...) is equivalent to term(...)'
from xotl.ql.expressions import invoke
e1 = this('parent').children.updated_since(1, threshold=0.99)
e2 = invoke(this('parent').children.updated_since, 1, threshold=0.99)
with context(UNPROXIFING_CONTEXT):
self.assertEqual(e1, e2)
def test_regression_test_calling_terms_directly(self):
'Tests that invoke(term, ...) is equivalent to term(...)'
from xotl.ql.expressions import invoke
e1 = this('parent').children.updated_since(1, threshold=0.99)
e2 = invoke(this('parent').children.updated_since, 1, threshold=0.99)
with context(UNPROXIFING_CONTEXT):
self.assertEqual(e1, e2)
def test_all_ops(self):
ok = self.assertEqual
from operator import (eq, ne, lt, le, gt, ge, and_, or_, xor, add, sub,
mul, div, floordiv, mod, truediv, pow, lshift,
rshift, neg, abs, pos, invert)
binary_tests = [(eq, '{0} == {1}'),
(ne, '{0} != {1}'),
(lt, '{0} < {1}'),
(gt, '{0} > {1}'),
(le, '{0} <= {1}'),
(ge, '{0} >= {1}'),
(and_, '{0} and {1}'),
(or_, '{0} or {1}'),
(xor, '{0} xor {1}'),
(add, '{0} + {1}'),
(sub, '{0} - {1}'),
(mul, '{0} * {1}'),
(div, '{0} / {1}'),
(truediv, '{0} / {1}'),
(floordiv, '{0} // {1}'),
(mod, '{0} mod {1}'),
(pow, '{0}**{1}'),
(lshift, '{0} << {1}'),
(rshift, '{0} >> {1}')]
unary_tests = [(neg, '-{0}'),
(abs, 'abs({0})'),
(pos, '+{0}'),
(invert, 'not {0}')]
for test, fmt in binary_tests:
ok(fmt.format("this('p').age", "this('p').count"),
str(test(this('p').age, this('p').count)))
for test, fmt in unary_tests:
ok(fmt.format("this('p').age"),
str(test(this('p').age)))
def test_calling_functions(self):
from xotl.ql.expressions import call
expression = this.startswith('manu')
self.assertIsInstance(expression, ExpressionTree)
self.assertEqual("call(this.startswith, manu)",
str(expression))
equiv_expr = call(this.startswith, 'manu')
with context(UNPROXIFING_CONTEXT):
self.assertEqual(equiv_expr, expression)
# But the calling a these instance directly is not supported
# (I think is not pretty)
with self.assertRaises(TypeError):
this('someone')('cannot', 'call', 'me')
def test_calling_functions(self):
from xotl.ql.expressions import call
expression = this.startswith('manu')
self.assertIsInstance(expression, ExpressionTree)
self.assertEqual("call(this.startswith, manu)",
str(expression))
equiv_expr = call(this.startswith, 'manu')
with context(UNPROXIFING_CONTEXT):
self.assertEqual(equiv_expr, expression)
# But the calling a these instance directly is not supported
# (I think is not pretty)
with self.assertRaises(TypeError):
this('someone')('cannot', 'call', 'me')
def test_this_SHOULD_NOT_be_singletons(self):
# Making this instances singletons leads to subtle bugs in queries
# and complicates the code just to avoid such complications:
# An instance may be involved in a query::
# query = these(parent for parent in this('parent')
# if parent.age > 40)
# query2 = these(parent for parent in this('parent')
# if parent.age < 30)
# If this('parent') were to return a singleton then the second
# query could have overwritten the previous binding from the first
# query; it took a bit of hackerish to avoid this:
# - Create a context and then skip the singleton-making code
# in such a context.
# But since this instance are likely to be used always inside queries
# the singleton stuff would not make improvement.
# So it is best just to remove it.
t1 = this('abc', parent=this('efc'))
t2 = this('abc', parent=this('efc'))
self.assertIsNot(t1, t2)
def test_this_SHOULD_NOT_be_singletons(self):
# Making this instances singletons leads to subtle bugs in queries
# and complicates the code just to avoid such complications:
# An instance may be involved in a query::
# query = these(parent for parent in this('parent')
# if parent.age > 40)
# query2 = these(parent for parent in this('parent')
# if parent.age < 30)
# If this('parent') were to return a singleton then the second
# query could have overwritten the previous binding from the first
# query; it took a bit of hackerish to avoid this:
# - Create a context and then skip the singleton-making code
# in such a context.
# But since this instance are likely to be used always inside queries
# the singleton stuff would not make improvement.
# So it is best just to remove it.
t1 = this('abc', parent=this('efc'))
t2 = this('abc', parent=this('efc'))
self.assertIsNot(t1, t2)
def test_simple_expression(self):
expr = this('child').age < this('parent').age
self.assertEqual("this('child').age < this('parent').age", str(expr))
def test_tautology(self):
self.assertIs(_true, this('parent') == this('parent'))
self.assertIs(_true, this == this)
self.assertIs(_false, this != this)
self.assertIs(_false, this('parent') != this('parent'))
def test_this_anyattribute_str(self):
'Tests that an unbound this instance has any attribute'
self.assertEquals('this.a.b.c', str(this.a.b.c))
self.assertEquals("this('z').a.b.c", str(this('z').a.b.c))
def test_simple_expression(self):
expr = this('child').age < this('parent').age
self.assertEqual("this('child').age < this('parent').age", str(expr))
def test_tautology(self):
self.assertIs(_true, this('parent') == this('parent'))
self.assertIs(_true, this == this)
self.assertIs(_false, this != this)
self.assertIs(_false, this('parent') != this('parent'))
def test_this_anyattribute_str(self):
'Tests that an unbound this instance has any attribute'
self.assertEquals('this.a.b.c', str(this.a.b.c))
self.assertEquals("this('z').a.b.c", str(this('z').a.b.c))
