def test_become(self):
from __pypy__ import thunk, become
x = []
y = []
assert x is not y
become(x, y)
assert x is y
def test_double_become2(self):
from __pypy__ import thunk, become
x = []
y = []
z = []
become(x, y)
become(x, z)
assert x is y is z
def test_id(self):
from __pypy__ import thunk, become
# these are the Smalltalk semantics of become().
x = []; idx = id(x)
y = []; idy = id(y)
assert idx != idy
become(x, y)
assert id(x) == id(y) == idy
def test_is_thunk_become(self):
from __pypy__ import thunk, become, is_thunk
def f():
return 42
x = thunk(f)
y = []
become(y, x)
assert is_thunk(y)
assert y == 42
assert not is_thunk(y)
def send(self, obj, n=None):
#print 'send', n,; self._check(obj)
if n is None:
n = self.count
self.count += 2
data = (n, obj, None)
else:
data = (n, obj)
self.sendraw(data)
become(obj, thunk(self._resume, n))
def test_double_become(self):
skip("fix me")
from __pypy__ import thunk, become
x = [1]
y = [2]
z = [3]
become(x, y)
become(y, z)
assert x is y is z
a = []
a.extend(x)
a.extend(y)
a.extend(z)
assert a == [3, 3, 3]
def test_become_yourself(self):
from __pypy__ import become
x = []
become(x, x)
assert str(x) == "[]"