class TestViewCell(unittest.TestCase):
def setUp(self):
self.lc = LooseCell(value=0, key='a', type=int)
self.vc = ViewCell(
base=self.lc,
get_transform=lambda x: x + 1,
set_transform=lambda x: x - 1,
key='b',
type=int)
def test_get_set(self):
self.assertEqual(0, self.lc.get())
self.assertEqual(1, self.vc.get())
self.vc.set(2)
self.assertEqual(1, self.lc.get())
self.assertEqual(2, self.vc.get())
self.lc.set(3)
self.assertEqual(3, self.lc.get())
self.assertEqual(4, self.vc.get())
def test_subscription(self):
fired = []
def f():
fired.append(self.vc.get())
self.vc.subscribe(f)
self.lc.set(1)
self.assertEqual([2], fired)
class TestViewCell(unittest.TestCase):
def setUp(self):
self.lc = LooseCell(value=0, key='a', type=int)
self.vc = ViewCell(
base=self.lc,
get_transform=lambda x: x + 1,
set_transform=lambda x: x - 1,
key='b',
type=int)
def test_get_set(self):
self.assertEqual(0, self.lc.get())
self.assertEqual(1, self.vc.get())
self.vc.set(2)
self.assertEqual(1, self.lc.get())
self.assertEqual(2, self.vc.get())
self.lc.set(3)
self.assertEqual(3, self.lc.get())
self.assertEqual(4, self.vc.get())
def test_subscription(self):
fired = []
def f():
fired.append(self.vc.get())
self.vc.subscribe(f)
self.lc.set(1)
self.assertEqual([2], fired)
class TestViewCell(unittest.TestCase):
def setUp(self):
self.lc = LooseCell(value=0, type=RangeT([(-100, 100)]), writable=True)
self.delta = 1
self.vc = ViewCell(
base=self.lc,
get_transform=lambda x: x + self.delta,
set_transform=lambda x: x - self.delta,
type=int,
writable=True,
interest_tracker=LoopbackInterestTracker())
# TODO: Add tests for behavior when the transform is not perfectly one-to-one (such as due to floating-point error).
# TODO: Test propagation of interest
def test_get_set(self):
self.assertEqual(0, self.lc.get())
self.assertEqual(1, self.vc.get())
self.vc.set(2)
self.assertEqual(1, self.lc.get())
self.assertEqual(2, self.vc.get())
self.lc.set(3)
self.assertEqual(3, self.lc.get())
self.assertEqual(4, self.vc.get())
self.delta = 10
self.vc.changed_transform()
self.assertEqual(3, self.lc.get())
self.assertEqual(13, self.vc.get())
def test_subscription(self):
st = CellSubscriptionTester(self.vc)
self.lc.set(1)
st.expect_now(2)
self.delta = 10
self.vc.changed_transform()
self.assertEqual(1, self.lc.get())
st.expect_now(11)
st.unsubscribe()
self.lc.set(2)
st.advance()
def test_coerced_base_value(self):
self.vc.set(999) # out of base cell's range, gets clamped
self.assertEqual(100 + self.delta, self.vc.get())
