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-rw-r--r--python/pytest/_pytest/_code/_py2traceback.py81
1 files changed, 81 insertions, 0 deletions
diff --git a/python/pytest/_pytest/_code/_py2traceback.py b/python/pytest/_pytest/_code/_py2traceback.py
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+++ b/python/pytest/_pytest/_code/_py2traceback.py
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+# copied from python-2.7.3's traceback.py
+# CHANGES:
+# - some_str is replaced, trying to create unicode strings
+#
+import types
+
+def format_exception_only(etype, value):
+ """Format the exception part of a traceback.
+
+ The arguments are the exception type and value such as given by
+ sys.last_type and sys.last_value. The return value is a list of
+ strings, each ending in a newline.
+
+ Normally, the list contains a single string; however, for
+ SyntaxError exceptions, it contains several lines that (when
+ printed) display detailed information about where the syntax
+ error occurred.
+
+ The message indicating which exception occurred is always the last
+ string in the list.
+
+ """
+
+ # An instance should not have a meaningful value parameter, but
+ # sometimes does, particularly for string exceptions, such as
+ # >>> raise string1, string2 # deprecated
+ #
+ # Clear these out first because issubtype(string1, SyntaxError)
+ # would throw another exception and mask the original problem.
+ if (isinstance(etype, BaseException) or
+ isinstance(etype, types.InstanceType) or
+ etype is None or type(etype) is str):
+ return [_format_final_exc_line(etype, value)]
+
+ stype = etype.__name__
+
+ if not issubclass(etype, SyntaxError):
+ return [_format_final_exc_line(stype, value)]
+
+ # It was a syntax error; show exactly where the problem was found.
+ lines = []
+ try:
+ msg, (filename, lineno, offset, badline) = value.args
+ except Exception:
+ pass
+ else:
+ filename = filename or "<string>"
+ lines.append(' File "%s", line %d\n' % (filename, lineno))
+ if badline is not None:
+ if isinstance(badline, bytes): # python 2 only
+ badline = badline.decode('utf-8', 'replace')
+ lines.append(u' %s\n' % badline.strip())
+ if offset is not None:
+ caretspace = badline.rstrip('\n')[:offset].lstrip()
+ # non-space whitespace (likes tabs) must be kept for alignment
+ caretspace = ((c.isspace() and c or ' ') for c in caretspace)
+ # only three spaces to account for offset1 == pos 0
+ lines.append(' %s^\n' % ''.join(caretspace))
+ value = msg
+
+ lines.append(_format_final_exc_line(stype, value))
+ return lines
+
+def _format_final_exc_line(etype, value):
+ """Return a list of a single line -- normal case for format_exception_only"""
+ valuestr = _some_str(value)
+ if value is None or not valuestr:
+ line = "%s\n" % etype
+ else:
+ line = "%s: %s\n" % (etype, valuestr)
+ return line
+
+def _some_str(value):
+ try:
+ return unicode(value)
+ except Exception:
+ try:
+ return str(value)
+ except Exception:
+ pass
+ return '<unprintable %s object>' % type(value).__name__