Files
pyscript/pyscriptjs/tests/integration/test_async.py
Antonio Cuni 8c5475f78f Move pyodide to a web worker (#1333)
This PR adds support for optionally running pyodide in a web worker:

- add a new option config.execution_thread, which can be `main` or `worker`. The default is `main`

- improve the test machinery so that we run all tests twice, once for `main` and once for `worker`

- add a new esbuild target which builds the code for the worker

The support for workers is not complete and many features are still missing: there are 71 tests which are marked as `@skip_worker`, but we can fix them in subsequent PRs.

The vast majority of tests fail because js.document is unavailable: for it to run transparently, we need the "auto-syncify" feature of synclink.


Co-authored-by: Hood Chatham <roberthoodchatham@gmail.com>
Co-authored-by: Madhur Tandon <20173739+madhur-tandon@users.noreply.github.com>
2023-04-14 10:55:31 +02:00

204 lines
6.4 KiB
Python

from .support import PyScriptTest, skip_worker
class TestAsync(PyScriptTest):
# ensure_future() and create_task() should behave similarly;
# we'll use the same source code to test both
coroutine_script = """
<py-script>
import js
import asyncio
js.console.log("first")
async def main():
await asyncio.sleep(1)
js.console.log("third")
asyncio.{func}(main())
js.console.log("second")
</py-script>
"""
def test_asyncio_ensure_future(self):
self.pyscript_run(self.coroutine_script.format(func="ensure_future"))
self.wait_for_console("third")
assert self.console.log.lines[-3:] == ["first", "second", "third"]
def test_asyncio_create_task(self):
self.pyscript_run(self.coroutine_script.format(func="create_task"))
self.wait_for_console("third")
assert self.console.log.lines[-3:] == ["first", "second", "third"]
def test_asyncio_gather(self):
self.pyscript_run(
"""
<py-script id="pys">
import asyncio
import js
from pyodide.ffi import to_js
async def coro(delay):
await asyncio.sleep(delay)
return(delay)
async def get_results():
results = await asyncio.gather(*[coro(d) for d in range(3,0,-1)])
js.console.log(str(results)) #Compare to string representation, not Proxy
js.console.log("DONE")
asyncio.ensure_future(get_results())
</py-script>
"""
)
self.wait_for_console("DONE")
assert self.console.log.lines[-2:] == ["[3, 2, 1]", "DONE"]
def test_multiple_async(self):
self.pyscript_run(
"""
<py-script>
import js
import asyncio
async def a_func():
for i in range(3):
js.console.log('A', i)
await asyncio.sleep(0.1)
asyncio.ensure_future(a_func())
</py-script>
<py-script>
import js
import asyncio
async def b_func():
for i in range(3):
js.console.log('B', i)
await asyncio.sleep(0.1)
js.console.log('b func done')
asyncio.ensure_future(b_func())
</py-script>
"""
)
self.wait_for_console("b func done")
assert self.console.log.lines == [
"A 0",
"B 0",
"A 1",
"B 1",
"A 2",
"B 2",
"b func done",
]
@skip_worker("FIXME: display()")
def test_multiple_async_multiple_display_targeted(self):
self.pyscript_run(
"""
<py-script id='pyA'>
import js
import asyncio
async def a_func():
for i in range(2):
display(f'A{i}', target='pyA')
await asyncio.sleep(0.1)
asyncio.ensure_future(a_func())
</py-script>
<py-script id='pyB'>
import js
import asyncio
async def a_func():
for i in range(2):
display(f'B{i}', target='pyB')
await asyncio.sleep(0.1)
js.console.log("B DONE")
asyncio.ensure_future(a_func())
</py-script>
"""
)
self.wait_for_console("B DONE")
inner_text = self.page.inner_text("html")
assert "A0\nA1\nB0\nB1" in inner_text
@skip_worker("FIXME: display()")
def test_async_display_untargeted(self):
self.pyscript_run(
"""
<py-script id='pyA'>
import asyncio
import js
async def a_func():
try:
display('A')
await asyncio.sleep(0.1)
except Exception as err:
js.console.error(str(err))
await asyncio.sleep(1)
js.console.log("DONE")
asyncio.ensure_future(a_func())
</py-script>
"""
)
self.wait_for_console("DONE")
assert (
self.console.error.lines[-1]
== "Implicit target not allowed here. Please use display(..., target=...)"
)
def test_sync_and_async_order(self):
"""
The order of execution is defined as follows:
1. first, we execute all the py-script tag in order
2. then, we start all the tasks which were scheduled with create_task
Note that tasks are started *AFTER* all py-script tags have been
executed. That's why the console.log() inside mytask1 and mytask2 are
executed after e.g. js.console.log("6").
"""
src = """
<py-script>
import js
js.console.log("1")
</py-script>
<py-script>
import asyncio
import js
async def mytask1():
js.console.log("7")
await asyncio.sleep(0)
js.console.log("9")
js.console.log("2")
asyncio.create_task(mytask1())
js.console.log("3")
</py-script>
<py-script>
import js
js.console.log("4")
</py-script>
<py-script>
import asyncio
import js
async def mytask2():
js.console.log("8")
await asyncio.sleep(0)
js.console.log("10")
js.console.log("DONE")
js.console.log("5")
asyncio.create_task(mytask2())
js.console.log("6")
</py-script>
"""
self.pyscript_run(src, wait_for_pyscript=False)
self.wait_for_console("DONE")
lines = self.console.log.lines[-11:]
assert lines == ["1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "DONE"]