diff options
Diffstat (limited to 'migrate/tests/fixture/warnings.py')
| -rw-r--r-- | migrate/tests/fixture/warnings.py | 178 |
1 files changed, 88 insertions, 90 deletions
diff --git a/migrate/tests/fixture/warnings.py b/migrate/tests/fixture/warnings.py index 346c6a2..8d99c0f 100644 --- a/migrate/tests/fixture/warnings.py +++ b/migrate/tests/fixture/warnings.py @@ -1,90 +1,88 @@ -# lifted from Python 2.6, so we can use it in Python 2.5
-import sys
-
-class WarningMessage(object):
-
- """Holds the result of a single showwarning() call."""
-
- _WARNING_DETAILS = ("message", "category", "filename", "lineno", "file",
- "line")
-
- def __init__(self, message, category, filename, lineno, file=None,
- line=None):
- local_values = locals()
- for attr in self._WARNING_DETAILS:
- setattr(self, attr, local_values[attr])
- if category:
- self._category_name = category.__name__
- else:
- self._category_name = None
-
- def __str__(self):
- return ("{message : %r, category : %r, filename : %r, lineno : %s, "
- "line : %r}" % (self.message, self._category_name,
- self.filename, self.lineno, self.line))
-
-
-class catch_warnings(object):
-
- """A context manager that copies and restores the warnings filter upon
- exiting the context.
-
- The 'record' argument specifies whether warnings should be captured by a
- custom implementation of warnings.showwarning() and be appended to a list
- returned by the context manager. Otherwise None is returned by the context
- manager. The objects appended to the list are arguments whose attributes
- mirror the arguments to showwarning().
-
- The 'module' argument is to specify an alternative module to the module
- named 'warnings' and imported under that name. This argument is only useful
- when testing the warnings module itself.
-
- """
-
- def __init__(self, record=False, module=None):
- """Specify whether to record warnings and if an alternative module
- should be used other than sys.modules['warnings'].
-
- For compatibility with Python 3.0, please consider all arguments to be
- keyword-only.
-
- """
- self._record = record
- if module is None:
- self._module = sys.modules['warnings']
- else:
- self._module = module
- self._entered = False
-
- def __repr__(self):
- args = []
- if self._record:
- args.append("record=True")
- if self._module is not sys.modules['warnings']:
- args.append("module=%r" % self._module)
- name = type(self).__name__
- return "%s(%s)" % (name, ", ".join(args))
-
- def __enter__(self):
- if self._entered:
- raise RuntimeError("Cannot enter %r twice" % self)
- self._entered = True
- self._filters = self._module.filters
- self._module.filters = self._filters[:]
- self._showwarning = self._module.showwarning
- if self._record:
- log = []
- def showwarning(*args, **kwargs):
- log.append(WarningMessage(*args, **kwargs))
- self._module.showwarning = showwarning
- return log
- else:
- return None
-
- def __exit__(self, *exc_info):
- if not self._entered:
- raise RuntimeError("Cannot exit %r without entering first" % self)
- self._module.filters = self._filters
- self._module.showwarning = self._showwarning
-
-
+# lifted from Python 2.6, so we can use it in Python 2.5 +import sys + +class WarningMessage(object): + + """Holds the result of a single showwarning() call.""" + + _WARNING_DETAILS = ("message", "category", "filename", "lineno", "file", + "line") + + def __init__(self, message, category, filename, lineno, file=None, + line=None): + local_values = locals() + for attr in self._WARNING_DETAILS: + setattr(self, attr, local_values[attr]) + if category: + self._category_name = category.__name__ + else: + self._category_name = None + + def __str__(self): + return ("{message : %r, category : %r, filename : %r, lineno : %s, " + "line : %r}" % (self.message, self._category_name, + self.filename, self.lineno, self.line)) + + +class catch_warnings(object): + + """A context manager that copies and restores the warnings filter upon + exiting the context. + + The 'record' argument specifies whether warnings should be captured by a + custom implementation of warnings.showwarning() and be appended to a list + returned by the context manager. Otherwise None is returned by the context + manager. The objects appended to the list are arguments whose attributes + mirror the arguments to showwarning(). + + The 'module' argument is to specify an alternative module to the module + named 'warnings' and imported under that name. This argument is only useful + when testing the warnings module itself. + + """ + + def __init__(self, record=False, module=None): + """Specify whether to record warnings and if an alternative module + should be used other than sys.modules['warnings']. + + For compatibility with Python 3.0, please consider all arguments to be + keyword-only. + + """ + self._record = record + if module is None: + self._module = sys.modules['warnings'] + else: + self._module = module + self._entered = False + + def __repr__(self): + args = [] + if self._record: + args.append("record=True") + if self._module is not sys.modules['warnings']: + args.append("module=%r" % self._module) + name = type(self).__name__ + return "%s(%s)" % (name, ", ".join(args)) + + def __enter__(self): + if self._entered: + raise RuntimeError("Cannot enter %r twice" % self) + self._entered = True + self._filters = self._module.filters + self._module.filters = self._filters[:] + self._showwarning = self._module.showwarning + if self._record: + log = [] + def showwarning(*args, **kwargs): + log.append(WarningMessage(*args, **kwargs)) + self._module.showwarning = showwarning + return log + else: + return None + + def __exit__(self, *exc_info): + if not self._entered: + raise RuntimeError("Cannot exit %r without entering first" % self) + self._module.filters = self._filters + self._module.showwarning = self._showwarning |