def test_invalid_then_valid(self, _):
expected = "Please respond with 'yes' or 'no'"
# The first time, we respond "yes"
self.assertTrue(query_yes_no("?", None))
output = sys.stdout.getvalue()
self.assertIn(expected, output)
sys.stdout = StringIO()
# The second time, we respond "no"
self.assertFalse(query_yes_no("?", None))
output = sys.stdout.getvalue()
self.assertIn(expected, output)
def test_valid_default(self, _):
for valid_default, expected in [(None, "[y/n]"), ("yes", "[Y/n]"),
("no", "[y/N]")]:
self.assertTrue(query_yes_no("?", valid_default))
output = sys.stdout.getvalue()
sys.stdout = StringIO()
self.assertIn(expected, output)
def test_valid_yes(self, _):
self.assertTrue(query_yes_no("?", None))
def test_valid_no(self, _):
self.assertFalse(query_yes_no("?", None))
def test_use_valid_default(self, _):
for valid_default in ["yes", "no"]:
expected = (valid_default == "yes")
actual = query_yes_no("?", valid_default)
self.assertEqual(actual, expected)