def test_unknown_node_type():
"""
Test compatibility behavior for unknown node type.
"""
registerNodeType(SampleNodeV1)
g = Graph('')
n = g.addNewNode("SampleNodeV1", input="/dev/null", paramA="foo")
graphFile = os.path.join(tempfile.mkdtemp(), "test_unknown_node_type.mg")
g.save(graphFile)
internalFolder = n.internalFolder
nodeName = n.name
unregisterNodeType(SampleNodeV1)
# reload file
g = loadGraph(graphFile)
os.remove(graphFile)
assert len(g.nodes) == 1
n = g.node(nodeName)
# SampleNodeV1 is now an unknown type
# check node instance type and compatibility issue type
assert isinstance(n, CompatibilityNode)
assert n.issue == CompatibilityIssue.UnknownNodeType
# check if attributes are properly restored
assert len(n.attributes) == 3
assert n.input.isInput
assert n.output.isOutput
# check if internal folder
assert n.internalFolder == internalFolder
# upgrade can't be perform on unknown node types
assert not n.canUpgrade
with pytest.raises(NodeUpgradeError):
g.upgradeNode(nodeName)
def test_description_conflict():
"""
Test compatibility behavior for conflicting node descriptions.
"""
# copy registered node types to be able to restore them
originalNodeTypes = copy.copy(meshroom.core.nodesDesc)
nodeTypes = [SampleNodeV1, SampleNodeV2, SampleNodeV3, SampleNodeV4, SampleNodeV5]
nodes = []
g = Graph('')
# register and instantiate instances of all node types except last one
for nt in nodeTypes[:-1]:
registerNodeType(nt)
n = g.addNewNode(nt.__name__)
if nt == SampleNodeV4:
# initialize list attribute with values to create a conflict with V5
n.paramA.value = [{'a': 0, 'b': [1.0, 2.0]}]
nodes.append(n)
graphFile = os.path.join(tempfile.mkdtemp(), "test_description_conflict.mg")
g.save(graphFile)
# reload file as-is, ensure no compatibility issue is detected (no CompatibilityNode instances)
g = loadGraph(graphFile)
assert all(isinstance(n, Node) for n in g.nodes)
# offset node types register to create description conflicts
# each node type name now reference the next one's implementation
for i, nt in enumerate(nodeTypes[:-1]):
meshroom.core.nodesDesc[nt.__name__] = nodeTypes[i+1]
# reload file
g = loadGraph(graphFile)
os.remove(graphFile)
assert len(g.nodes) == len(nodes)
for srcNode in nodes:
nodeName = srcNode.name
compatNode = g.node(srcNode.name)
# Node description clashes between what has been saved
assert isinstance(compatNode, CompatibilityNode)
assert srcNode.internalFolder == compatNode.internalFolder
# case by case description conflict verification
if isinstance(srcNode.nodeDesc, SampleNodeV1):
# V1 => V2: 'input' has been renamed to 'in'
assert len(compatNode.attributes) == 3
assert hasattr(compatNode, "input")
assert not hasattr(compatNode, "in")
# perform upgrade
upgradedNode = g.upgradeNode(nodeName)[0]
assert isinstance(upgradedNode, Node) and isinstance(upgradedNode.nodeDesc, SampleNodeV2)
assert not hasattr(upgradedNode, "input")
assert hasattr(upgradedNode, "in")
# check uid has changed (not the same set of attributes)
assert upgradedNode.internalFolder != srcNode.internalFolder
elif isinstance(srcNode.nodeDesc, SampleNodeV2):
# V2 => V3: 'paramA' has been removed'
assert len(compatNode.attributes) == 3
assert hasattr(compatNode, "paramA")
# perform upgrade
upgradedNode = g.upgradeNode(nodeName)[0]
assert isinstance(upgradedNode, Node) and isinstance(upgradedNode.nodeDesc, SampleNodeV3)
assert not hasattr(upgradedNode, "paramA")
# check uid is identical (paramA not part of uid)
assert upgradedNode.internalFolder == srcNode.internalFolder
elif isinstance(srcNode.nodeDesc, SampleNodeV3):
# V3 => V4: 'paramA' has been added
assert len(compatNode.attributes) == 2
assert not hasattr(compatNode, "paramA")
# perform upgrade
upgradedNode = g.upgradeNode(nodeName)[0]
assert isinstance(upgradedNode, Node) and isinstance(upgradedNode.nodeDesc, SampleNodeV4)
assert hasattr(upgradedNode, "paramA")
assert isinstance(upgradedNode.paramA.attributeDesc, desc.ListAttribute)
# paramA child attributes invalidate UID
assert upgradedNode.internalFolder != srcNode.internalFolder
elif isinstance(srcNode.nodeDesc, SampleNodeV4):
# V4 => V5: 'paramA' elementDesc has changed from SampleGroupV1 to SampleGroupV2
assert len(compatNode.attributes) == 3
assert hasattr(compatNode, "paramA")
groupAttribute = compatNode.paramA.attributeDesc.elementDesc
assert isinstance(groupAttribute, desc.GroupAttribute)
# check that Compatibility node respect SampleGroupV1 description
for elt in groupAttribute.groupDesc:
assert isinstance(elt, next(a for a in SampleGroupV1 if a.name == elt.name).__class__)
# perform upgrade
upgradedNode = g.upgradeNode(nodeName)[0]
assert isinstance(upgradedNode, Node) and isinstance(upgradedNode.nodeDesc, SampleNodeV5)
assert hasattr(upgradedNode, "paramA")
# parameter was incompatible, value could not be restored
assert upgradedNode.paramA.isDefault
assert upgradedNode.internalFolder != srcNode.internalFolder
else:
raise ValueError("Unexpected node type: " + srcNode.nodeType)
# restore original node types
meshroom.core.nodesDesc = originalNodeTypes
