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#!/usr/bin/env python
# -*- coding: utf-8 -*-
# pyvows testing engine
# https://github.com/heynemann/pyvows
# Licensed under the MIT license:
# http://www.opensource.org/licenses/mit-license
# Copyright (c) 2013 Richard Lupton r.lupton@gmail.com
from pyvows import Vows, expect
from pyvows.reporting import VowsDefaultReporter
from pyvows.runner.abc import VowsTopicError
try:
from StringIO import StringIO
except:
from io import StringIO
# These tests check that the reporting, which happens after all tests
# have run, correctly shows the errors raised in topic functions.
@Vows.batch
class ErrorReporting(Vows.Context):
class TracebackOfTopicError:
def setup(self):
# The eval_context() method of the result object is called by
# the reporter to decide if a context was successful or
# not. Here we are testing the reporting of errors, so provide
# a mock result which always says it has failed.
class MockResult:
def eval_context(self, context):
return False
self.reporter = VowsDefaultReporter(MockResult(), 0)
# Patch the print_traceback() method to just record its
# arguments.
self.print_traceback_args = None
def print_traceback(*args, **kwargs):
self.print_traceback_args = args
self.reporter.print_traceback = print_traceback
class AContextWithATopicError:
def topic(self):
# Simulate a context whose topic() function raised an error
mock_exc_info = ('type', 'value', 'traceback')
context = {
'contexts': [],
'error': VowsTopicError('topic', mock_exc_info),
'filename': '/path/to/vows.py',
'name': 'TestContext',
'tests': [],
'topic_elapsed': 0
}
return context
def reporter_should_call_print_traceback_with_the_exception(self, context):
self.parent.print_traceback_args = None
self.parent.reporter.print_context('TestContext', context, file=StringIO())
expect(self.parent.print_traceback_args).to_equal(('type', 'value', 'traceback'))
class ASuccessfulContext:
def topic(self):
# Simulate a context whose topic() didn't raise an error
context = {
'contexts': [],
'error': None,
'filename': '/path/to/vows.py',
'name': 'TestContext',
'tests': [],
'topic_elapsed': 0
}
return context
def reporter_should_not_call_print_traceback(self, context):
self.parent.print_traceback_args = None
self.parent.reporter.print_context('TestContext', context, file=StringIO())
expect(self.parent.print_traceback_args).to_equal(None)
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