diff options
Diffstat (limited to 'lib/spack/external/_pytest/capture.py')
| -rw-r--r-- | lib/spack/external/_pytest/capture.py | 102 |
1 files changed, 94 insertions, 8 deletions
diff --git a/lib/spack/external/_pytest/capture.py b/lib/spack/external/_pytest/capture.py index eea81ca187..cb5af6fcb3 100644 --- a/lib/spack/external/_pytest/capture.py +++ b/lib/spack/external/_pytest/capture.py @@ -2,17 +2,19 @@ per-test stdout/stderr capturing mechanism. """ -from __future__ import with_statement +from __future__ import absolute_import, division, print_function import contextlib import sys import os +import io +from io import UnsupportedOperation from tempfile import TemporaryFile import py import pytest +from _pytest.compat import CaptureIO -from py.io import TextIO unicode = py.builtin.text patchsysdict = {0: 'stdin', 1: 'stdout', 2: 'stderr'} @@ -32,8 +34,11 @@ def pytest_addoption(parser): @pytest.hookimpl(hookwrapper=True) def pytest_load_initial_conftests(early_config, parser, args): - _readline_workaround() ns = early_config.known_args_namespace + if ns.capture == "fd": + _py36_windowsconsoleio_workaround(sys.stdout) + _colorama_workaround() + _readline_workaround() pluginmanager = early_config.pluginmanager capman = CaptureManager(ns.capture) pluginmanager.register(capman, "capturemanager") @@ -130,7 +135,7 @@ class CaptureManager: self.resumecapture() self.activate_funcargs(item) yield - #self.deactivate_funcargs() called from suspendcapture() + # self.deactivate_funcargs() called from suspendcapture() self.suspendcapture_item(item, "call") @pytest.hookimpl(hookwrapper=True) @@ -167,6 +172,7 @@ def capsys(request): request.node._capfuncarg = c = CaptureFixture(SysCapture, request) return c + @pytest.fixture def capfd(request): """Enable capturing of writes to file descriptors 1 and 2 and make @@ -234,6 +240,7 @@ def safe_text_dupfile(f, mode, default_encoding="UTF8"): class EncodedFile(object): errors = "strict" # possibly needed by py3 code (issue555) + def __init__(self, buffer, encoding): self.buffer = buffer self.encoding = encoding @@ -247,6 +254,11 @@ class EncodedFile(object): data = ''.join(linelist) self.write(data) + @property + def name(self): + """Ensure that file.name is a string.""" + return repr(self.buffer) + def __getattr__(self, name): return getattr(object.__getattribute__(self, "buffer"), name) @@ -314,9 +326,11 @@ class MultiCapture(object): return (self.out.snap() if self.out is not None else "", self.err.snap() if self.err is not None else "") + class NoCapture: __init__ = start = done = suspend = resume = lambda *args: None + class FDCapture: """ Capture IO to/from a given os-level filedescriptor. """ @@ -389,7 +403,7 @@ class FDCapture: def writeorg(self, data): """ write to original file descriptor. """ if py.builtin._istext(data): - data = data.encode("utf8") # XXX use encoding of original stream + data = data.encode("utf8") # XXX use encoding of original stream os.write(self.targetfd_save, data) @@ -402,7 +416,7 @@ class SysCapture: if name == "stdin": tmpfile = DontReadFromInput() else: - tmpfile = TextIO() + tmpfile = CaptureIO() self.tmpfile = tmpfile def start(self): @@ -448,7 +462,8 @@ class DontReadFromInput: __iter__ = read def fileno(self): - raise ValueError("redirected Stdin is pseudofile, has no fileno()") + raise UnsupportedOperation("redirected stdin is pseudofile, " + "has no fileno()") def isatty(self): return False @@ -458,12 +473,30 @@ class DontReadFromInput: @property def buffer(self): - if sys.version_info >= (3,0): + if sys.version_info >= (3, 0): return self else: raise AttributeError('redirected stdin has no attribute buffer') +def _colorama_workaround(): + """ + Ensure colorama is imported so that it attaches to the correct stdio + handles on Windows. + + colorama uses the terminal on import time. So if something does the + first import of colorama while I/O capture is active, colorama will + fail in various ways. + """ + + if not sys.platform.startswith('win32'): + return + try: + import colorama # noqa + except ImportError: + pass + + def _readline_workaround(): """ Ensure readline is imported so that it attaches to the correct stdio @@ -489,3 +522,56 @@ def _readline_workaround(): import readline # noqa except ImportError: pass + + +def _py36_windowsconsoleio_workaround(stream): + """ + Python 3.6 implemented unicode console handling for Windows. This works + by reading/writing to the raw console handle using + ``{Read,Write}ConsoleW``. + + The problem is that we are going to ``dup2`` over the stdio file + descriptors when doing ``FDCapture`` and this will ``CloseHandle`` the + handles used by Python to write to the console. Though there is still some + weirdness and the console handle seems to only be closed randomly and not + on the first call to ``CloseHandle``, or maybe it gets reopened with the + same handle value when we suspend capturing. + + The workaround in this case will reopen stdio with a different fd which + also means a different handle by replicating the logic in + "Py_lifecycle.c:initstdio/create_stdio". + + :param stream: in practice ``sys.stdout`` or ``sys.stderr``, but given + here as parameter for unittesting purposes. + + See https://github.com/pytest-dev/py/issues/103 + """ + if not sys.platform.startswith('win32') or sys.version_info[:2] < (3, 6): + return + + # bail out if ``stream`` doesn't seem like a proper ``io`` stream (#2666) + if not hasattr(stream, 'buffer'): + return + + buffered = hasattr(stream.buffer, 'raw') + raw_stdout = stream.buffer.raw if buffered else stream.buffer + + if not isinstance(raw_stdout, io._WindowsConsoleIO): + return + + def _reopen_stdio(f, mode): + if not buffered and mode[0] == 'w': + buffering = 0 + else: + buffering = -1 + + return io.TextIOWrapper( + open(os.dup(f.fileno()), mode, buffering), + f.encoding, + f.errors, + f.newlines, + f.line_buffering) + + sys.__stdin__ = sys.stdin = _reopen_stdio(sys.stdin, 'rb') + sys.__stdout__ = sys.stdout = _reopen_stdio(sys.stdout, 'wb') + sys.__stderr__ = sys.stderr = _reopen_stdio(sys.stderr, 'wb') |