def test_relationship_descriptor_one_to_ordered():
class Entry:
parent = None
class Directory(Entry):
contents = None
class File(Entry):
pass
Entry_parent = one_relationship_descriptor('parent', Directory)
Directory_contents = ordered_relationship_descriptor('contents', Entry)
Entry_parent.initialize(Directory_contents)
Directory_contents.initialize(Entry_parent)
Entry.parent = Entry_parent
Directory.contents = Directory_contents
root = Directory()
etc = Directory()
usr = Directory()
mnt = Directory()
var = Directory()
root.contents.append(etc)
root.contents.append(usr)
root.contents.append(mnt)
root.contents.append(var)
root.contents = []
assert len(root.contents) == 0
root.contents = [etc, usr, mnt, var]
assert len(root.contents) == 4
assert etc.parent == usr.parent == mnt.parent == var.parent == root
assert list(root.contents) == [etc, usr, mnt, var]
pwd = File()
pwd.parent = etc
bin, lib, man = Directory(), Directory(), Directory()
bin.parent = man.parent = lib.parent = usr
assert list(usr.contents) == [bin, man, lib]
var.contents.append(lib)
assert lib.parent == var
assert lib in var.contents
assert lib not in usr.contents
etc.contents.append(File())
assert len(etc.contents) == 2
pwd.parent = var
assert len(etc.contents) == 1
with pytest.raises(ValueError):
etc.contents.append(None)
with pytest.raises(TypeError):
etc.contents.append(15)
with pytest.raises(TypeError):
etc.contents.append("adsada")
with pytest.raises(ValueError):
etc.contents.remove(15)
def test_relationship_descriptor_one_to_one():
class Man:
pass
class Woman:
pass
# configure
Man.wife = one_relationship_descriptor('wife', Woman)
Woman.husband = one_relationship_descriptor('husband', Man)
Man.wife.initialize(Woman.husband)
Woman.husband.initialize(Man.wife)
mark = Man()
tom = Man()
mary = Woman()
sally = Woman()
assert mark.wife is None
assert tom.wife is None
assert mary.husband is None
mark.wife = mary
assert mary.husband is mark
assert mark.wife is mary
assert tom.wife is None
sally.husband = tom
assert tom.wife is sally
mark.wife = sally
assert mary.husband is None
assert tom.wife is None
assert mark.wife is sally
assert sally.husband is mark
sally.husband = None
assert tom.wife is None
assert mark.wife is None
with pytest.raises(ValueError):
tom.wife = 1
def test_relationship_descriptor_one_to_ordered():
class Entry:
parent=None
class Directory(Entry):
contents=None
class File(Entry):
pass
Entry_parent = one_relationship_descriptor('parent', Directory)
Directory_contents = ordered_relationship_descriptor('contents', Entry)
Entry_parent.initialize(Directory_contents)
Directory_contents.initialize(Entry_parent)
Entry.parent = Entry_parent
Directory.contents = Directory_contents
root = Directory()
etc = Directory()
usr = Directory()
mnt = Directory()
var = Directory()
root.contents.append(etc)
root.contents.append(usr)
root.contents.append(mnt)
root.contents.append(var)
root.contents = []
assert len(root.contents)==0
root.contents = [etc,usr,mnt,var]
assert len(root.contents)==4
assert etc.parent == usr.parent == mnt.parent == var.parent == root
assert list(root.contents) == [etc, usr, mnt, var]
pwd = File()
pwd.parent=etc
bin, lib, man = Directory(), Directory(), Directory()
bin.parent = man.parent = lib.parent = usr
assert list(usr.contents) == [bin, man, lib]
var.contents.append(lib)
assert lib.parent == var
assert lib in var.contents
assert lib not in usr.contents
etc.contents.append(File())
assert len(etc.contents)==2
pwd.parent = var
assert len(etc.contents)==1
with pytest.raises(ValueError):
etc.contents.append(None)
with pytest.raises(TypeError):
etc.contents.append(15)
with pytest.raises(TypeError):
etc.contents.append("adsada")
with pytest.raises(ValueError):
etc.contents.remove(15)
def test_relationship_descriptor_one_to_one():
class Man:
pass
class Woman:
pass
# configure
Man.wife = one_relationship_descriptor('wife', Woman)
Woman.husband = one_relationship_descriptor('husband', Man)
Man.wife.initialize(Woman.husband)
Woman.husband.initialize(Man.wife)
mark = Man()
tom = Man()
mary = Woman()
sally = Woman()
assert mark.wife is None
assert tom.wife is None
assert mary.husband is None
mark.wife = mary
assert mary.husband is mark
assert mark.wife is mary
assert tom.wife is None
sally.husband = tom
assert tom.wife is sally
mark.wife = sally
assert mary.husband is None
assert tom.wife is None
assert mark.wife is sally
assert sally.husband is mark
sally.husband = None
assert tom.wife is None
assert mark.wife is None
with pytest.raises(ValueError):
tom.wife = 1
def test_relationship_descriptor_one_to_many():
class Entry:
def __init__(self,name):
self.name = name
def __repr__(self):
if self.parent:
return repr(self.parent)+"/"+self.name
else:
return self.name
class Directory(Entry):
pass
class File(Entry):
pass
Entry.parent = one_relationship_descriptor('parent', Directory)
Directory.contents = many_relationship_descriptor('contents', Entry)
Entry.parent.initialize(Directory.contents)
Directory.contents.initialize(Entry.parent)
root = Directory("")
etc = Directory("etc")
usr = Directory("usr")
mnt = Directory("mnt")
var = Directory("var")
root.contents.add(etc)
root.contents.add(usr)
root.contents.add(mnt)
root.contents.add(var)
root.contents = []
assert len(root.contents)==0
root.contents = [mnt,var]
assert len(root.contents)==2
root.contents.add(etc)
root.contents.add(usr)
assert len(root.contents)==4
assert etc.parent == usr.parent == mnt.parent == var.parent == root
pwd = File("pwd")
pwd.parent=etc
bin, lib, man = Directory("bin"), Directory("lib"), Directory("man")
bin.parent = man.parent = lib.parent = usr
assert usr.contents == set([bin, man, lib])
var.contents.add(lib)
assert lib.parent == var
assert lib in var.contents
assert lib not in usr.contents
etc.contents.add(File("f1"))
etc.contents.add(File("f2"))
etc.contents.add(File("f3"))
with pytest.raises(TypeError):
etc.contents.add(15)
with pytest.raises(ValueError):
etc.contents.add(None)
with pytest.raises(TypeError):
etc.contents.add("adsada")
with pytest.raises(KeyError):
etc.contents.remove(15)
etc.contents.discard(14)
def test_relationship_descriptor_one_to_many():
class Entry:
def __init__(self, name):
self.name = name
def __repr__(self):
if self.parent:
return repr(self.parent) + "/" + self.name
else:
return self.name
class Directory(Entry):
pass
class File(Entry):
pass
Entry.parent = one_relationship_descriptor('parent', Directory)
Directory.contents = many_relationship_descriptor('contents', Entry)
Entry.parent.initialize(Directory.contents)
Directory.contents.initialize(Entry.parent)
root = Directory("")
etc = Directory("etc")
usr = Directory("usr")
mnt = Directory("mnt")
var = Directory("var")
root.contents.add(etc)
root.contents.add(usr)
root.contents.add(mnt)
root.contents.add(var)
root.contents = []
assert len(root.contents) == 0
root.contents = [mnt, var]
assert len(root.contents) == 2
root.contents.add(etc)
root.contents.add(usr)
assert len(root.contents) == 4
assert etc.parent == usr.parent == mnt.parent == var.parent == root
pwd = File("pwd")
pwd.parent = etc
bin, lib, man = Directory("bin"), Directory("lib"), Directory("man")
bin.parent = man.parent = lib.parent = usr
assert usr.contents == set([bin, man, lib])
var.contents.add(lib)
assert lib.parent == var
assert lib in var.contents
assert lib not in usr.contents
etc.contents.add(File("f1"))
etc.contents.add(File("f2"))
etc.contents.add(File("f3"))
with pytest.raises(TypeError):
etc.contents.add(15)
with pytest.raises(ValueError):
etc.contents.add(None)
with pytest.raises(TypeError):
etc.contents.add("adsada")
with pytest.raises(KeyError):
etc.contents.remove(15)
etc.contents.discard(14)