def test_observe_object(self):
observed = []
def f(object, type, new, old): observed.append((object, type, new, old))
def check_observed(expected):
observe.scan()
if observed != expected:
self.fail("observed %s\nshould be %s" % (observed, expected))
for i in range(len(observed)): del observed[0]
class O: pass
class P: pass
o = O()
o.x = 1
observe.observe(o, f)
if not observe.isobserved(o, f): self.fail("isobserved() is wrong")
old = o.__dict__.copy(); o.y = 2; check_observed([(o, object, o.__dict__, old)])
old = o.__dict__.copy(); del o.x; check_observed([(o, object, o.__dict__, old)])
old = o.__dict__.copy(); o.y = 3; check_observed([(o, object, o.__dict__, old)])
o.__class__ = P; check_observed([(o, "__class__", P, O)])
observe.unobserve(o, f)
o.z = 4; check_observed([])
if observe.isobserved(o, f): self.fail("isobserved() is wrong")
def test_observe_dict(self):
observed = []
def f(object, type, new, old): observed.append((object, type, new, old))
def check_observed(expected):
observe.scan()
if observed != expected:
self.fail("observed %s\nshould be %s" % (observed, expected))
for i in range(len(observed)): del observed[0]
d = {"a" : 1}
observe.observe(d, f)
if not observe.isobserved(d, f): self.fail("isobserved() is wrong")
od = d.copy(); d["b"] = 2; check_observed([(d, dict, d, od)])
od = d.copy(); d["a"] = 3; check_observed([(d, dict, d, od)])
od = d.copy(); del d["b"]; check_observed([(d, dict, d, od)])
observe.unobserve(d, f)
d["c"] = 4; check_observed([])
if observe.isobserved(d, f): self.fail("isobserved() is wrong")
def test_observe_list(self):
observed = []
def f(object, type, new, old): observed.append((object, type, new, old))
def check_observed(expected):
observe.scan()
if observed != expected:
self.fail("observed %s\nshould be %s" % (observed, expected))
for i in range(len(observed)): del observed[0]
l = [0]
observe.observe(l, f)
if not observe.isobserved(l, f): self.fail("isobserved() is wrong")
ol = l[:]; l.append(1); check_observed([(l, list, l, ol)])
ol = l[:]; del l[1]; check_observed([(l, list, l, ol)])
ol = l[:]; l[0] = 3; check_observed([(l, list, l, ol)])
observe.unobserve(l, f)
l[0] = 1
check_observed([])
if observe.isobserved(l, f): self.fail("isobserved() is wrong")
def __unobserve__(self, func): from editobj.observe import unobserve for obj in self._objs: unobserve(obj, func)