File size: 1,790 Bytes
2c3c408 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 | import asyncio
import io
import re
from typing import Callable
import pytest
from rich.console import Console, RenderableType
re_link_ids = re.compile(r"id=[\d\.\-]*?;.*?\x1b")
def replace_link_ids(render: str) -> str:
"""Link IDs have a random ID and system path which is a problem for
reproducible tests.
"""
return re_link_ids.sub("id=0;foo\x1b", render)
def render(renderable: RenderableType, no_wrap: bool = False) -> str:
console = Console(
width=100, file=io.StringIO(), color_system="truecolor", legacy_windows=False
)
with console.capture() as capture:
console.print(renderable, no_wrap=no_wrap, end="")
output = replace_link_ids(capture.get())
return output
async def wait_for_predicate(
predicate: Callable[[], bool],
timeout_secs: float = 2,
poll_delay_secs: float = 0.001,
) -> None:
"""Wait for the given predicate to become True by evaluating it every `poll_delay_secs`
seconds. Fail the pytest test if the predicate does not become True after `timeout_secs`
seconds.
Args:
predicate (Callable[[], bool]): The predicate function which will be called repeatedly.
timeout_secs (float): If the predicate doesn't evaluate to True after this number of
seconds, the test will fail.
poll_delay_secs (float): The number of seconds to wait between each call to the
predicate function.
"""
time_taken = 0
while True:
result = predicate()
if result:
return
await asyncio.sleep(poll_delay_secs)
time_taken += poll_delay_secs
if time_taken > timeout_secs:
pytest.fail(
f"Predicate {predicate} did not return True after {timeout_secs} seconds."
)
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