pybind11/tests/test_iostream.py
pre-commit-ci[bot] 5e946c2fa5
chore(deps): update pre-commit hooks (#4605)
* chore(deps): update pre-commit hooks

updates:
- [github.com/psf/black: 23.1.0 → 23.3.0](https://github.com/psf/black/compare/23.1.0...23.3.0)
- [github.com/Lucas-C/pre-commit-hooks: v1.4.2 → v1.5.1](https://github.com/Lucas-C/pre-commit-hooks/compare/v1.4.2...v1.5.1)
- [github.com/charliermarsh/ruff-pre-commit: v0.0.254 → v0.0.260](https://github.com/charliermarsh/ruff-pre-commit/compare/v0.0.254...v0.0.260)
- [github.com/PyCQA/pylint: v2.16.4 → v3.0.0a6](https://github.com/PyCQA/pylint/compare/v2.16.4...v3.0.0a6)
- [github.com/pre-commit/mirrors-mypy: v1.0.1 → v1.1.1](https://github.com/pre-commit/mirrors-mypy/compare/v1.0.1...v1.1.1)
- [github.com/codespell-project/codespell: v2.2.2 → v2.2.4](https://github.com/codespell-project/codespell/compare/v2.2.2...v2.2.4)
- [github.com/pre-commit/mirrors-clang-format: v15.0.7 → v16.0.0](https://github.com/pre-commit/mirrors-clang-format/compare/v15.0.7...v16.0.0)

* style: pre-commit fixes

* style: fix issues

* Update tests/test_call_policies.py

* Update tests/test_call_policies.py

* fix: ignore code in file

* style: pre-commit fixes

---------

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>
Co-authored-by: Henry Schreiner <HenrySchreinerIII@gmail.com>
2023-04-28 14:32:32 -04:00

292 lines
7.0 KiB
Python

from contextlib import redirect_stderr, redirect_stdout
from io import StringIO
from pybind11_tests import iostream as m
def test_captured(capsys):
msg = "I've been redirected to Python, I hope!"
m.captured_output(msg)
stdout, stderr = capsys.readouterr()
assert stdout == msg
assert not stderr
m.captured_output_default(msg)
stdout, stderr = capsys.readouterr()
assert stdout == msg
assert not stderr
m.captured_err(msg)
stdout, stderr = capsys.readouterr()
assert not stdout
assert stderr == msg
def test_captured_large_string(capsys):
# Make this bigger than the buffer used on the C++ side: 1024 chars
msg = "I've been redirected to Python, I hope!"
msg = msg * (1024 // len(msg) + 1)
m.captured_output_default(msg)
stdout, stderr = capsys.readouterr()
assert stdout == msg
assert not stderr
def test_captured_utf8_2byte_offset0(capsys):
msg = "\u07FF"
msg = "" + msg * (1024 // len(msg) + 1)
m.captured_output_default(msg)
stdout, stderr = capsys.readouterr()
assert stdout == msg
assert not stderr
def test_captured_utf8_2byte_offset1(capsys):
msg = "\u07FF"
msg = "1" + msg * (1024 // len(msg) + 1)
m.captured_output_default(msg)
stdout, stderr = capsys.readouterr()
assert stdout == msg
assert not stderr
def test_captured_utf8_3byte_offset0(capsys):
msg = "\uFFFF"
msg = "" + msg * (1024 // len(msg) + 1)
m.captured_output_default(msg)
stdout, stderr = capsys.readouterr()
assert stdout == msg
assert not stderr
def test_captured_utf8_3byte_offset1(capsys):
msg = "\uFFFF"
msg = "1" + msg * (1024 // len(msg) + 1)
m.captured_output_default(msg)
stdout, stderr = capsys.readouterr()
assert stdout == msg
assert not stderr
def test_captured_utf8_3byte_offset2(capsys):
msg = "\uFFFF"
msg = "12" + msg * (1024 // len(msg) + 1)
m.captured_output_default(msg)
stdout, stderr = capsys.readouterr()
assert stdout == msg
assert not stderr
def test_captured_utf8_4byte_offset0(capsys):
msg = "\U0010FFFF"
msg = "" + msg * (1024 // len(msg) + 1)
m.captured_output_default(msg)
stdout, stderr = capsys.readouterr()
assert stdout == msg
assert not stderr
def test_captured_utf8_4byte_offset1(capsys):
msg = "\U0010FFFF"
msg = "1" + msg * (1024 // len(msg) + 1)
m.captured_output_default(msg)
stdout, stderr = capsys.readouterr()
assert stdout == msg
assert not stderr
def test_captured_utf8_4byte_offset2(capsys):
msg = "\U0010FFFF"
msg = "12" + msg * (1024 // len(msg) + 1)
m.captured_output_default(msg)
stdout, stderr = capsys.readouterr()
assert stdout == msg
assert not stderr
def test_captured_utf8_4byte_offset3(capsys):
msg = "\U0010FFFF"
msg = "123" + msg * (1024 // len(msg) + 1)
m.captured_output_default(msg)
stdout, stderr = capsys.readouterr()
assert stdout == msg
assert not stderr
def test_guard_capture(capsys):
msg = "I've been redirected to Python, I hope!"
m.guard_output(msg)
stdout, stderr = capsys.readouterr()
assert stdout == msg
assert not stderr
def test_series_captured(capture):
with capture:
m.captured_output("a")
m.captured_output("b")
assert capture == "ab"
def test_flush(capfd):
msg = "(not flushed)"
msg2 = "(flushed)"
with m.ostream_redirect():
m.noisy_function(msg, flush=False)
stdout, stderr = capfd.readouterr()
assert not stdout
m.noisy_function(msg2, flush=True)
stdout, stderr = capfd.readouterr()
assert stdout == msg + msg2
m.noisy_function(msg, flush=False)
stdout, stderr = capfd.readouterr()
assert stdout == msg
def test_not_captured(capfd):
msg = "Something that should not show up in log"
stream = StringIO()
with redirect_stdout(stream):
m.raw_output(msg)
stdout, stderr = capfd.readouterr()
assert stdout == msg
assert not stderr
assert not stream.getvalue()
stream = StringIO()
with redirect_stdout(stream):
m.captured_output(msg)
stdout, stderr = capfd.readouterr()
assert not stdout
assert not stderr
assert stream.getvalue() == msg
def test_err(capfd):
msg = "Something that should not show up in log"
stream = StringIO()
with redirect_stderr(stream):
m.raw_err(msg)
stdout, stderr = capfd.readouterr()
assert not stdout
assert stderr == msg
assert not stream.getvalue()
stream = StringIO()
with redirect_stderr(stream):
m.captured_err(msg)
stdout, stderr = capfd.readouterr()
assert not stdout
assert not stderr
assert stream.getvalue() == msg
def test_multi_captured(capfd):
stream = StringIO()
with redirect_stdout(stream):
m.captured_output("a")
m.raw_output("b")
m.captured_output("c")
m.raw_output("d")
stdout, stderr = capfd.readouterr()
assert stdout == "bd"
assert stream.getvalue() == "ac"
def test_dual(capsys):
m.captured_dual("a", "b")
stdout, stderr = capsys.readouterr()
assert stdout == "a"
assert stderr == "b"
def test_redirect(capfd):
msg = "Should not be in log!"
stream = StringIO()
with redirect_stdout(stream):
m.raw_output(msg)
stdout, stderr = capfd.readouterr()
assert stdout == msg
assert not stream.getvalue()
stream = StringIO()
with redirect_stdout(stream), m.ostream_redirect():
m.raw_output(msg)
stdout, stderr = capfd.readouterr()
assert not stdout
assert stream.getvalue() == msg
stream = StringIO()
with redirect_stdout(stream):
m.raw_output(msg)
stdout, stderr = capfd.readouterr()
assert stdout == msg
assert not stream.getvalue()
def test_redirect_err(capfd):
msg = "StdOut"
msg2 = "StdErr"
stream = StringIO()
with redirect_stderr(stream), m.ostream_redirect(stdout=False):
m.raw_output(msg)
m.raw_err(msg2)
stdout, stderr = capfd.readouterr()
assert stdout == msg
assert not stderr
assert stream.getvalue() == msg2
def test_redirect_both(capfd):
msg = "StdOut"
msg2 = "StdErr"
stream = StringIO()
stream2 = StringIO()
with redirect_stdout(stream), redirect_stderr(stream2), m.ostream_redirect():
m.raw_output(msg)
m.raw_err(msg2)
stdout, stderr = capfd.readouterr()
assert not stdout
assert not stderr
assert stream.getvalue() == msg
assert stream2.getvalue() == msg2
def test_threading():
with m.ostream_redirect(stdout=True, stderr=False):
# start some threads
threads = []
# start some threads
for _j in range(20):
threads.append(m.TestThread())
# give the threads some time to fail
threads[0].sleep()
# stop all the threads
for t in threads:
t.stop()
for t in threads:
t.join()
# if a thread segfaults, we don't get here
assert True