def test_depth_one(self):
foo = path.Node("foo")
path.mount("/", foo)
self.assertEqual(path.select("/"), ("foo",))
self.assertTrue(path.exists("/foo"))
path.umount("/foo")
self.assertEqual(path.select("/"), ())
def test_depth_two(self):
foo = path.Node("foo")
path.mount("/", foo)
bar = path.Node("bar")
path.mount("/foo", bar)
self.assertTrue(path.exists("/foo/bar"))
self.assertEqual(path.select("/foo"), ("bar",))
self.assertEqual(path.get("/foo/bar"), bar)
path.umount("/foo/bar")
self.assertEqual(path.select("/foo"), ())
self.assertEqual(path.select("/"), ("foo",))
def test_select(self):
class XNode(path.Node):
def __init__(self, name, x):
super(XNode, self).__init__(name)
self.x = x
foo = XNode("foo", 42)
bar = XNode("bar", 100)
baz = XNode("baz", 3.14)
qux = XNode("qux", 50)
path.mount("/", foo)
path.mount("/", bar)
path.mount("/", baz)
path.mount("/", qux)
self.assertEqual(set(path.select("/")), set(("foo", "bar", "baz", "qux")))
self.assertEqual(set(path.select("/", by_value = True)), set((foo, bar, baz, qux)))
self.assertEqual(
path.select("/", predicate = lambda node: node.x < 100, key = lambda node: node.x),
("baz", "foo", "qux"))
def test_depth_zero(self):
self.assertEqual(path.select("/"), ())
