Viewing file:  test_View.py (7.99 KB) -rw-r--r--
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from guppy.heapy.test import support
class TestCase(support.TestCase):
def setUp(self):
support.TestCase.setUp(self)
self.types = self.heapy.UniSet.types
class FirstCase(TestCase):
def test_cal_hiding(self):
V = self.View
iso = self.iso
# Tests that our workspace nodesets are hidden.
a = []
b = []
as_ = iso(a)
bs = iso(b)
ab = as_ | bs
# Make sure hiding is carried on with set operations
self.assertTrue(ab.referrers.kind == self.types.FrameType)
self.assertTrue((as_ | bs).referrers.kind == self.types.FrameType)
self.assertTrue(V.referrers(iso(a)).kind == self.types.FrameType)
self.assertTrue(V.referrers(iso(b)).kind == self.types.FrameType)
# Test that we can still see nodesets created with other hiding_tag
c = []
chold = self.guppy.sets.immnodeset(
[c],
hiding_tag=[] # Make sure we see it whether or not View uses default or not
)
cs = iso(c)
del c
self.assertTrue(cs.referrers.kind == type(
self.guppy.sets.immnodeset()))
h = self.View.heap()
self.aseq(h & self.iso(self.Use), self.Use.Nothing)
self.aseq(h & self.iso(self.Use.__dict__), self.Use.Nothing)
def test_dominos(self):
# Test dominos and domisize
iso = self.iso
x = []
y = [x, []]
z = [y]
self.aseq(iso(y).dominos, iso(y, y[1]))
self.aseq(iso(y).domisize, iso(y, y[1]).indisize)
self.aseq(iso(z).dominos, iso(z))
del y
self.aseq(iso(z).dominos, iso(z, z[0], z[0][1]))
def test_exports(self):
# Test a few exports; the other defined in _unp_exports use the same mechanism
iso = self.iso
x = []
y = [x, []]
z = [y]
p = iso(z).referents.indisize
self.aseq(p, iso(y).indisize)
def test_horizon(self):
iso = self.iso
h = self.View.horizon()
x = []
hn = h.news()
self.aseq(hn, iso(x))
del hn
hn = h.news()
self.aseq(hn, iso(x))
del x, hn
hn = h.news()
self.aseq(hn, iso())
def test_imdom(self):
iso = self.iso
x = []
y = [x, []]
z = [x, y]
del x, y
self.aseq(iso(z[0]).imdom, iso(z))
def test_referents(self):
iso = self.iso
x = []
y = [x, []]
z = [y]
self.aseq(iso(x).referents, iso())
self.aseq(iso(y).referents, iso(x, y[1]))
self.aseq(iso(z).referents, iso(y))
self.aseq(iso(y, z).referents, iso(x, y, y[1]))
def test_root(self):
old_root = self.View.root
self.assertIs(self.View.root, old_root)
self.assertIs(self.Use.View.root, old_root)
self.assertIs(self.View.hv.root, old_root)
obj = object()
self.View.root = obj
self.assertIs(self.View.root, obj)
self.assertIs(self.Use.View.root, obj)
self.assertIs(self.View.hv.root, obj)
self.View.root = old_root
self.assertIs(self.View.root, old_root)
self.assertIs(self.Use.View.root, old_root)
self.assertIs(self.View.hv.root, old_root)
class GCCase(TestCase):
def test_gc_mechanism(self):
# Test the underlying GC system for having the properties that
# support the method of automatic reclamation of nodegraphs
# that is relied on in other tests. Failure here, dependent on
# changed GC behaviour, would explain the other failures.
from weakref import ref
import gc
class C:
pass
c = C()
cbs = []
def cb(wr):
cbs.append(wr)
wr = ref(c, cb)
c.x = c
gc.collect()
strc = str(c)
self.aseq(str(wr()), strc)
self.asis(wr(), c)
c = None
self.aseq(str(wr()), strc)
self.aseq(cbs, [])
gc.collect()
self.asis(wr(), None)
self.aseq(cbs, [wr])
def test_gc_hook(self):
# Test the GC hook as implemented in View
hos = []
def ho():
hos.append(1)
import gc
gc.collect()
hook = self.heapy.View.gchook(ho)
self.aseq(hos, [])
gc.collect()
self.aseq(hos, [1])
hook = None
gc.collect()
self.aseq(hos, [1])
def test_gc_drg(self):
# Test automatic reclamation issues for dict owner nodegraph
# This mechanism changed so the old test here is
# not valid anymore
# FIXME MAKE NEW TEST
return
import gc
View = self.View
hv = View.hv
drg = View.nodegraph()
def clear_drg():
if drg.is_sorted:
drg.clear()
else:
pass
_clear_drg_hook = View.gchook(clear_drg)
hv.update_dictowners(drg)
gc.collect()
lendrg = len(drg)
self.assertTrue(lendrg > 0) # Before any use, it will not be cleared
# Now it is used by taking its length
gc.collect()
self.aseq(len(drg), 0)
byclodo = hv.cli_clodo(drg, {})
class C:
pass
c = C()
byclodo.partition([c.__dict__])
self.assertTrue(len(drg) > 0)
gc.collect()
self.assertTrue(len(drg) == 0)
def test_gc_rg(self):
# Test automatic reclamation issues for referrer nodegraph
iso = self.iso
immnodeset = self.guppy.sets.immnodeset
self.View.is_rg_update_all = False
import gc
gc.collect()
dst = []
gc.collect()
self.assertTrue(len(self.View.rg) == 0)
# Test that rg is automatically updated with the set target(s)
a = [dst]
b = [dst]
c = [a, b]
class T:
def __init__(self, set):
self.set = set
ta = T(iso(a))
self.View.referrers_add_target(ta)
tb = T(iso(b))
self.View.referrers_add_target(tb)
self.View.referrers(iso(c))
self.assertTrue(c in immnodeset(self.View.rg[a]))
self.assertTrue(c in immnodeset(self.View.rg[b]))
# Test that a referrers target is automatically collected when not referenced
tb = None
gc.collect()
self.View.referrers(iso(c))
self.assertTrue(c in immnodeset(self.View.rg[a]))
self.assertTrue(c not in immnodeset(self.View.rg[b]))
# Test that adding a source automatically updates rg
# even though domain of rg already includes its target
# This requires gc collection
d = [c]
self.assertTrue(d not in self.View.referrers(iso(c)))
gc.collect()
self.assertTrue(d in self.View.referrers(iso(c)))
class AltHeapCase(TestCase):
# Tests for support of alternative heap as implemented around 27 Oct 2005
# and discussed in Notes at that time.
def test_observation_containers(self):
# Test the View.observation_containers method
iso = self.iso
idset = self.idset
# These are to be included
a = iso([], {})
b = self.ImpSet.mutnodeset()
c = self.View.observation_list()
# These are not to be included - have another hiding tag
excla = self.guppy.sets.mutnodeset()
exclb = self.guppy.sets.immnodeset()
# Get possible containers
oc = idset(self.View.observation_containers())
self.assertTrue(iso(a.nodes, b, c) <= oc)
self.assertTrue(not (iso(excla, exclb) & oc))
class SpecialTypesCase(TestCase):
# Some tests for special types
def test_array(self):
iso = self.iso
import array
a = array.array('b', b'asdf')
iso(a).size
def test_main(debug=0):
from guppy.heapy.Remote import off
off()
support.run_unittest(FirstCase, debug)
support.run_unittest(GCCase, debug)
support.run_unittest(AltHeapCase, debug)
support.run_unittest(SpecialTypesCase, debug)
if __name__ == "__main__":
test_main()
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