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|
from pybind11_tests import iostream as m
import sys
from contextlib import contextmanager
try:
# Python 3
from io import StringIO
except ImportError:
# Python 2
try:
from cStringIO import StringIO
except ImportError:
from StringIO import StringIO
try:
# Python 3.4
from contextlib import redirect_stdout
except ImportError:
@contextmanager
def redirect_stdout(target):
original = sys.stdout
sys.stdout = target
yield
sys.stdout = original
try:
# Python 3.5
from contextlib import redirect_stderr
except ImportError:
@contextmanager
def redirect_stderr(target):
original = sys.stderr
sys.stderr = target
yield
sys.stderr = original
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 stderr == ''
m.captured_output_default(msg)
stdout, stderr = capsys.readouterr()
assert stdout == msg
assert stderr == ''
m.captured_err(msg)
stdout, stderr = capsys.readouterr()
assert stdout == ''
assert stderr == msg
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 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 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 stderr == ''
assert stream.getvalue() == ''
stream = StringIO()
with redirect_stdout(stream):
m.captured_output(msg)
stdout, stderr = capfd.readouterr()
assert stdout == ''
assert 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 stdout == ''
assert stderr == msg
assert stream.getvalue() == ''
stream = StringIO()
with redirect_stderr(stream):
m.captured_err(msg)
stdout, stderr = capfd.readouterr()
assert stdout == ''
assert 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 stream.getvalue() == ''
stream = StringIO()
with redirect_stdout(stream):
with m.ostream_redirect():
m.raw_output(msg)
stdout, stderr = capfd.readouterr()
assert stdout == ''
assert stream.getvalue() == msg
stream = StringIO()
with redirect_stdout(stream):
m.raw_output(msg)
stdout, stderr = capfd.readouterr()
assert stdout == msg
assert stream.getvalue() == ''
def test_redirect_err(capfd):
msg = "StdOut"
msg2 = "StdErr"
stream = StringIO()
with redirect_stderr(stream):
with m.ostream_redirect(stdout=False):
m.raw_output(msg)
m.raw_err(msg2)
stdout, stderr = capfd.readouterr()
assert stdout == msg
assert stderr == ''
assert stream.getvalue() == msg2
def test_redirect_both(capfd):
msg = "StdOut"
msg2 = "StdErr"
stream = StringIO()
stream2 = StringIO()
with redirect_stdout(stream):
with redirect_stderr(stream2):
with m.ostream_redirect():
m.raw_output(msg)
m.raw_err(msg2)
stdout, stderr = capfd.readouterr()
assert stdout == ''
assert stderr == ''
assert stream.getvalue() == msg
assert stream2.getvalue() == msg2
|
