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#------------------------------------------------------------------------------
# Copyright (c) 2013-2025, Nucleic Development Team.
#
# Distributed under the terms of the Modified BSD License.
#
# The full license is in the file LICENSE, distributed with this software.
#------------------------------------------------------------------------------
"""Test the handling of nested functions such as lambda functions and
implicit functions used by comprehensions.
"""
import pytest
from utils import compile_source
OPERATOR_TEMPLATES = [
"""from enaml.widgets.window import Window
enamldef Main(Window):
event ev
attr called : bool = False
ev ::
test = 1
a = {}
try:
b = i
except NameError:
pass
else:
raise AssertionError('i leaked out of the comprehension')
self.called = True
""",
"""from enaml.widgets.window import Window, Container
template Temp():
Container:
event ev
attr called : bool = False
enamldef Main(Window):
alias ev: t.ev
alias called: t.called
Temp(): t:
t.ev ::
test = 1
a = {}
try:
b = i
except NameError:
pass
else:
raise AssertionError('i leaked out of the comprehension')
t.called = True
"""
]
SYNCHRONIZATION_TEMPLATES = [
"""from enaml.widgets.api import Window, Container, Field, Label
enamldef Main(Window):
attr colors = ['red', 'blue', 'yellow', 'green']
alias search_txt : search.text
alias formatted_comp : lab.text
Container: container:
Field: search:
placeholder = "Search..."
Label: lab:
text << '{{}}'.format({})
""",
"""from enaml.widgets.api import Window, Container, Field, Label
template Temp():
Container: container:
alias fd: search.text
alias lb: lab.text
Field: search:
placeholder = "Search..."
Label: lab:
text << '{{}}'.format({})
enamldef Main(Window):
attr colors = ['red', 'blue', 'yellow', 'green']
alias search_txt : t.fd
alias formatted_comp : t.lb
Temp(): t:
pass
"""
]
FUNCTION_TEMPLATES =[
"""from enaml.widgets.window import Window
enamldef Main(Window):
func call():
test = 1
a = {}
try:
b = i
except NameError:
pass
else:
raise AssertionError('i leaked out of the comprehension')
return True
""",
"""from enaml.widgets.window import Window, Container
template Temp():
Container:
func call():
test = 1
a = {}
try:
b = i
except NameError:
pass
else:
raise AssertionError('i leaked out of the comprehension')
return True
enamldef Main(Window):
func call():
return t.call()
Temp(): t:
pass
"""
]
@pytest.mark.parametrize("template", SYNCHRONIZATION_TEMPLATES)
def test_lambda(template):
"""Test that lambda work when used in the context of tracing.
"""
source = template.format(
'sorted([1, 2, 3], key=lambda x: -x)')
win = compile_source(source, 'Main')()
assert win.formatted_comp == '[3, 2, 1]'
@pytest.mark.parametrize("template", SYNCHRONIZATION_TEMPLATES)
def test_tracing_lambda(template):
"""Test that lambda can be traced.
"""
source = template.format(
'sorted([1, 2, 3], key=lambda x: colors[x-1][0])')
win = compile_source(source, 'Main')()
assert win.formatted_comp == '[2, 1, 3]'
win.colors = ['yellow', 'red', 'blue', 'green']
assert win.formatted_comp == '[3, 2, 1]'
# Test that we can access the non local values and the closure variables
@pytest.mark.parametrize("template", OPERATOR_TEMPLATES)
@pytest.mark.parametrize('value', ['self', 'test'])
def test_list_comprehension_operator(template, value):
"""Test running a list comprehension in an operator handler.
"""
source = template.format('[%s for i in range(10)]' % value)
win = compile_source(source, 'Main')()
win.ev = True
assert win.called
@pytest.mark.parametrize("template", SYNCHRONIZATION_TEMPLATES)
def test_list_comprehension_synchronization(template):
"""Test running a list comprehension in a traced read handler.
"""
source = template.format(
'[c for c in colors if not search.text or search.text in c]')
win = compile_source(source, 'Main')()
assert win.formatted_comp == "['red', 'blue', 'yellow', 'green']"
win.search_txt = 'red'
assert win.formatted_comp == "['red']"
win.search_txt = ''
win.colors = ['red', 'blue', 'yellow']
assert win.formatted_comp == "['red', 'blue', 'yellow']"
# Test that we can access the non local values and the closure variables
@pytest.mark.parametrize("template", FUNCTION_TEMPLATES)
@pytest.mark.parametrize('value', ['self', 'test'])
def test_list_comprehension_func(template, value):
"""Test running a list comprehension in a declarative function.
"""
source = template.format('[%s for i in range(10)]' % value)
win = compile_source(source, 'Main')()
assert win.call()
# Test that we can access the non local values and the closure variables
@pytest.mark.parametrize("template", OPERATOR_TEMPLATES)
@pytest.mark.parametrize('value', ['self', 'test'])
def test_dict_comprehension_operator(template, value):
"""Test running a dict comprehension in an operator handler.
"""
source = template.format('{i: %s for i in range(10)}' % value)
win = compile_source(source, 'Main')()
win.ev = True
assert win.called
@pytest.mark.parametrize("template", SYNCHRONIZATION_TEMPLATES)
def test_dict_comprehension_synchronisation(template):
"""Test running a dict comprehension in a traced read handler.
"""
source = template.format(
'{i: search.text for i in range(3)}')
win = compile_source(source, 'Main')()
assert eval(win.formatted_comp) == {0: '', 1: '', 2: ''}
win.search_txt = 'red'
assert eval(win.formatted_comp) == {0: 'red', 1: 'red', 2: 'red'}
# Test that we can access the non local values and the closure variables
@pytest.mark.parametrize("template", FUNCTION_TEMPLATES)
@pytest.mark.parametrize('value', ['self', 'test'])
def test_dict_comprehension_func(template, value):
"""Test running a dict comprehension in a declarative function.
"""
source = template.format('{i: %s for i in range(10)}' % value)
win = compile_source(source, 'Main')()
assert win.call()
# Test that we can access the non local values and the closure variables
@pytest.mark.parametrize("template", OPERATOR_TEMPLATES)
@pytest.mark.parametrize('value', ['self', 'test'])
def test_set_comprehension_operator(template, value):
"""Test running a set comprehension in an operator handler.
"""
source = template.format('{%s for i in range(10)}' % value)
win = compile_source(source, 'Main')()
win.ev = True
assert win.called
@pytest.mark.parametrize("template", SYNCHRONIZATION_TEMPLATES)
def test_set_comprehension_synchronization(template):
"""Test running a set comprehension in a traced read handler.
"""
source = template.format(
'{search.text for i in range(3)}')
win = compile_source(source, 'Main')()
assert eval(win.formatted_comp) == {''}
win.search_txt = 'red'
assert eval(win.formatted_comp) == {'red'}
# Test that we can access the non local values and the closure variables
@pytest.mark.parametrize("template", FUNCTION_TEMPLATES)
@pytest.mark.parametrize('value', ['self', 'test'])
def test_set_comprehension_func(template, value):
"""Test running a set comprehension in a declarative function.
"""
source = template.format('{%s for i in range(10)}' % value)
win = compile_source(source, 'Main')()
assert win.call()
@pytest.mark.parametrize("template", FUNCTION_TEMPLATES)
def test_handling_nested_comprehension(template):
"""Test handling nested comprehensions.
"""
source = template.format('{self for i in {j for j in range(10)}}')
win = compile_source(source, 'Main')()
assert win.call()
@pytest.mark.parametrize("template", SYNCHRONIZATION_TEMPLATES)
def test_handling_nested_comprehension_synchronization(template):
"""Test handling nested comprehensions in a traced read.
"""
source = template.format(
'{search.text for i in {j for j in colors}}')
win = compile_source(source, 'Main')()
assert eval(win.formatted_comp) == {''}
win.search_txt = 'red'
assert eval(win.formatted_comp) == {'red'}
win.colors = []
assert eval(win.formatted_comp) == set()
|
