def test_resolve_multiple_truthy(self):
truthy = MagicMock(return_value=True)
switch = Switch(
[Case(truthy) >> sentinel.exact1,
Case(truthy) >> sentinel.exact2])
self.assertEqual(switch(sentinel.any), sentinel.exact1)
truthy.assert_called_once_with(sentinel.any)
def test_resolve_multiple_falsy(self):
falsy = MagicMock(return_value=False)
switch = Switch(
[Case(falsy) >> sentinel.exact1,
Case(falsy) >> sentinel.exact2])
with self.assertRaises(ValueError):
switch(sentinel.any)
falsy.assert_has_calls([call(sentinel.any), call(sentinel.any)])
def test_resolve_multiple_truthy_falsy(self):
truthy = MagicMock(return_value=True)
falsy = MagicMock(return_value=False)
switch = Switch([
Case(falsy) >> sentinel.exact1,
Case(falsy) >> sentinel.exact2,
Case(truthy) >> sentinel.exact3,
Case(truthy) >> sentinel.exact4
])
self.assertEqual(switch(sentinel.any), sentinel.exact3)
falsy.assert_has_calls([call(sentinel.any), call(sentinel.any)])
truthy.assert_called_once_with(sentinel.any)
def test_switch_without_cases(self):
switch = Switch(cases=[], expr=sentinel.expr)
with self.assertRaises(ValueError):
switch()
def test_switch_without_expr(self):
switch = Switch([Case(lambda x: True) >> sentinel.smth])
with self.assertRaises(ValueError):
switch()
def test_switch_with_2_expr(self):
switch = Switch()(
sentinel.expr1) | Case(lambda x: True) >> sentinel.smth
with self.assertRaises(ValueError):
switch(sentinel.expr2)
def test_switch_with_expr(self):
truthy = MagicMock(return_value=True)
switch = Switch()(sentinel.expr) | Case(truthy) >> sentinel.smth
self.assertEqual(switch(), sentinel.smth)
truthy.assert_called_once_with(sentinel.expr)
def test_switch_multiple_cases(self):
switch = (Switch()
| Case(lambda x: False) >> sentinel.exact1
| Case(lambda x: True) >> sentinel.exact2)
self.assertEqual(switch(sentinel.any), sentinel.exact2)
def test_switch_single_case(self):
switch = Switch() | Case(lambda x: True) >> sentinel.exact
self.assertEqual(switch(sentinel.any), sentinel.exact)
def test_resolve_single_falsy(self):
falsy = MagicMock(return_value=False)
switch = Switch([Case(falsy) >> sentinel.exact])
with self.assertRaises(ValueError):
switch(sentinel.any)
falsy.assert_called_once_with(sentinel.any)