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# Copyright (c) 2011 testtools developers. See LICENSE for details.
import sys
from testtools import (
ExpectedException,
TestCase,
)
from testtools.matchers import (
AfterPreprocessing,
EndsWith,
Equals,
)
class TestExpectedException(TestCase):
"""Test the ExpectedException context manager."""
def test_pass_on_raise(self):
with ExpectedException(ValueError, "tes."):
raise ValueError("test")
def test_pass_on_raise_matcher(self):
with ExpectedException(ValueError, AfterPreprocessing(str, Equals("test"))):
raise ValueError("test")
def test_raise_on_text_mismatch(self):
try:
with ExpectedException(ValueError, "tes."):
raise ValueError("mismatch")
except AssertionError:
e = sys.exc_info()[1]
self.assertEqual("'mismatch' does not match /tes./", str(e))
else:
self.fail("AssertionError not raised.")
def test_raise_on_general_mismatch(self):
matcher = AfterPreprocessing(str, Equals("test"))
value_error = ValueError("mismatch")
try:
with ExpectedException(ValueError, matcher):
raise value_error
except AssertionError:
e = sys.exc_info()[1]
self.assertEqual(matcher.match(value_error).describe(), str(e))
else:
self.fail("AssertionError not raised.")
def test_raise_on_error_mismatch(self):
try:
with ExpectedException(TypeError, "tes."):
raise ValueError("mismatch")
except ValueError:
e = sys.exc_info()[1]
self.assertEqual("mismatch", str(e))
else:
self.fail("ValueError not raised.")
def test_raise_if_no_exception(self):
try:
with ExpectedException(TypeError, "tes."):
pass
except AssertionError:
e = sys.exc_info()[1]
self.assertEqual("TypeError not raised.", str(e))
else:
self.fail("AssertionError not raised.")
def test_pass_on_raise_any_message(self):
with ExpectedException(ValueError):
raise ValueError("whatever")
def test_annotate(self):
def die():
with ExpectedException(ValueError, msg="foo"):
pass
exc = self.assertRaises(AssertionError, die)
self.assertThat(exc.args[0], EndsWith(": foo"))
def test_annotated_matcher(self):
def die():
with ExpectedException(ValueError, "bar", msg="foo"):
pass
exc = self.assertRaises(AssertionError, die)
self.assertThat(exc.args[0], EndsWith(": foo"))
def test_suite():
from unittest import TestLoader
return TestLoader().loadTestsFromName(__name__)
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