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#------------------------------------------------------------------------------
# Copyright (c) 2018-2024, Nucleic Development Team.
#
# Distributed under the terms of the Modified BSD License.
#
# The full license is in the file LICENSE, distributed with this software.
#------------------------------------------------------------------------------
import sys
import ast
from textwrap import dedent
import pytest
from utils import compile_source
from enaml.core.parser import parse
from .test_parser import validate_ast
FUNC_TEMPLATE =\
"""
import asyncio
async def fetch(query):
return query
{}
"""
TEST_SOURCE = {
'await': """
async def function(queries):
r = await query()
return r
""",
'await if': """
async def function(query):
result = await fetch(query)
if not query:
return
return result
""",
'if await': """
async def function(query):
if not query:
return
result = await fetch(query)
return result
""",
'await future': """
async def function(query):
f = fetch(query)
await f
return result
""",
'await subscript': """
async def function(query):
tasks = [fetch(query)]
await tasks[0]
return result
""",
'await attr': """
async def function(query):
class API:
search = fetch
api = API()
await api.fetch(query)
return result
""",
'await list comp': """
async def function(queries):
result = [await fetch(q) for q in queries]
return result
""",
'await dict comp': """
async def function(queries):
result = {i:await fetch(q) for i, q in enumerate(queries)}
return result
""",
'async for': """
async def function(queries):
results = []
async for r in fetch(queries):
results.append(r)
return result
""",
'async for or': """
async def function(queries):
results = []
async for r in queries or fetch(queries):
results.append(r)
return result
""",
'async for comp': """
async def function(queries):
results = []
async for r in [f for f in fetch(queries)]:
results.append(r)
return result
""",
'async for or comp': """
async def function(queries):
results = []
async for r in queries or [f for f in fetch(queries)]:
results.append(r)
return result
""",
'async with': """
async def function(query):
lock = asyncio.lock()
async with lock:
result = await fetch(query)
return result
""",
}
if sys.version_info >= (3, 6):
TEST_SOURCE.update({
'async for list comp': """
async def function(queries):
result = [r async for r in fetch(q)]
return result
""",
'async for if list comp': """
async def function(queries):
result = [r async for r in fetch(queries) if r]
return result
""",
})
if sys.version_info < (3, 7):
TEST_SOURCE.update({
'async not keyword': """
def function(queries):
async = False
return queries
""",
'await not keyword': """
def function(queries):
await = False
return queries
""",
})
@pytest.mark.parametrize('desc', TEST_SOURCE.keys())
def test_async(desc):
"""Async function with await list comp statement. """
src = FUNC_TEMPLATE.format(dedent(TEST_SOURCE[desc]))
# Ensure it's valid
py_ast = ast.parse(src)
enaml_ast = parse(src).body[0].ast
validate_ast(py_ast.body[0], enaml_ast.body[0], True)
validate_ast(py_ast.body[1], enaml_ast.body[1], True)
validate_ast(py_ast.body[2], enaml_ast.body[2], True)
def test_decl_async_func():
py_src = dedent("""
from enaml.core.declarative import d_func
from enaml.widgets.api import Window, Label
async def fetch(query):
return query
class MainWindow(Window):
@d_func
async def search(self, query):
result = await fetch(query)
return result
""")
enaml_src = dedent("""
from enaml.core.declarative import d_func
from enaml.widgets.api import Window, Label
async def fetch(query):
return query
enamldef MainWindow(Window):
async func search(query):
result = await fetch(query)
return result
enamldef CustomWindow(MainWindow):
async search => (query):
result = await fetch(query)
return result
""")
py_ast = ast.parse(py_src)
enaml_ast = parse(enaml_src)
validate_ast(py_ast.body[3].body[0],
enaml_ast.body[1].body[0].funcdef, True)
# Check override syntax
validate_ast(py_ast.body[3].body[0],
enaml_ast.body[2].body[0].funcdef, True)
# Make sure it compiles
CustomWindow = compile_source(enaml_src, 'CustomWindow')
|
