def test_when(self):
result = []
def on_done(value):
result.append(value)
def on_all(*args):
result.extend(args)
return(sum(args))
d1 = Deferred()
d2 = Deferred()
d3 = When(d1, d2)
d1.then(on_done)
d2.then(on_done)
d3.then(on_all)\
.then(on_done)
self.assertEqual(result, [])
d2.resolve(2)
self.assertEqual(result, [2])
d1.resolve(1)
self.assertEqual(result, [2, 1, 2, 3, 1])
def test_when(self):
result = []
def on_done(value):
result.append(value)
def on_all(*args):
result.extend(args)
return (sum(args))
d1 = Deferred()
d2 = Deferred()
d3 = When(d1, d2)
d1.then(on_done)
d2.then(on_done)
d3.then(on_all)\
.then(on_done)
self.assertEqual(result, [])
d2.resolve(2)
self.assertEqual(result, [2])
d1.resolve(1)
self.assertEqual(result, [2, 1, 2, 3, 1])
def test_plus(self):
result = []
def get_value():
return 42
def got_value(value):
self.assertEqual(value, 42)
return value * 2
def got_value2(value):
self.assertEqual(value, 84)
result.append(value)
d = Deferred()
d.then(get_value)\
.then(got_value)\
.then(got_value2)
self.assertEqual(result, [])
d.resolve()
self.assertEqual(result, [84])
def test_plus(self):
result = []
def get_value():
return 42
def got_value(value):
self.assertEqual(value, 42)
return value * 2
def got_value2(value):
self.assertEqual(value, 84)
result.append(value)
d = Deferred()
d.then(get_value)\
.then(got_value)\
.then(got_value2)
self.assertEqual(result, [])
d.resolve()
self.assertEqual(result, [84])