def test_153956(self):
from pixar import Sdf
# Create a crate-backed .usd file and populate it with an
# attribute connection. These files do not store specs for
# targets/connections, so there will be an entry in the
# connectionChildren list but no corresponding spec.
layer = Sdf.Layer.CreateAnonymous(".usd")
primSpec = Sdf.CreatePrimInLayer(layer, "/Test")
attrSpec = Sdf.AttributeSpec(primSpec, "attr",
Sdf.ValueTypeNames.Float)
# -- Adding item to prependedItems list..."
attrSpec.connectionPathList.prependedItems.append(
"/Test.prependedItem")
# Transfer the contents of the crate-backed .usd file into an
# memory-backed .usda file. These file *do* store specs for
# targets/connections.
newLayer = Sdf.Layer.CreateAnonymous(".usda")
newLayer.TransferContent(layer)
primSpec = newLayer.GetPrimAtPath("/Test")
attrSpec = primSpec.properties["attr"]
# Adding an item to the explicitItems list changes to listOp to
# explicit mode, but does not clear any existing connectionChildren.
attrSpec.connectionPathList.explicitItems.append("/Test.explicitItem")
# Prior to the fix, this caused a failed verify b/c an entry exists in
# the connectionChildren list for which there is no corresponding spec.
primSpec.name = "Test2"
def test_USD_5196(self):
from pxr import Usd, Sdf, Vt, Tf
import os, random
# Test that usdc files corrupted by truncation (such that the table of
# contents is past the end of the file) are detected and fail to open
# with an error.
with Tf.NamedTemporaryFile(suffix=".usdc") as f:
layer = Sdf.Layer.CreateNew(f.name)
foo = Sdf.CreatePrimInLayer(layer, '/foo')
attr = Sdf.AttributeSpec(foo, 'attr', Sdf.ValueTypeNames.IntArray)
ints = range(1024**2)
random.shuffle(ints)
attr.default = Vt.IntArray(ints)
layer.Save()
del layer
# Now truncate layer to corrupt it.
fobj = open(f.name, "rw+")
size = os.path.getsize(f.name)
fobj.truncate(size / 2)
fobj.close()
# Attempting to open the file should raise an exception.
with self.assertRaises(Tf.ErrorException):
layer = Sdf.Layer.FindOrOpen(f.name)
