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from Xdmf import *
if __name__ == "__main__":
fileName ="TestXdmfRead.xmf"
# create a simple empty file
domain = XdmfDomain.New()
collection = XdmfGridCollection.New()
grid = XdmfUnstructuredGrid.New()
attribute1 = XdmfAttribute.New()
attribute2 = XdmfAttribute.New()
information = XdmfInformation.New()
domain.insert(collection)
collection.insert(grid)
grid.insert(attribute1)
grid.insert(attribute2)
grid.insert(information)
writer = XdmfWriter.New(fileName)
domain.accept(writer)
# read file using XPaths and verify downcasts to appropriate XdmfItems
reader = XdmfReader.New()
domain = reader.read(fileName, "/Xdmf/Domain")
print str(len(domain)) + " ?= " + str(1)
print "? " + str(isinstance(domain[0], XdmfDomain))
assert(len(domain) == 1)
assert(isinstance(domain[0], XdmfDomain))
collection = reader.read(fileName, "/Xdmf/Domain/Grid")
print str(len(collection)) + " ?= " + str(1)
print "? " + str(isinstance(collection[0], XdmfGridCollection))
assert(len(collection) == 1)
assert(isinstance(collection[0], XdmfGridCollection))
grid = reader.read(fileName, "/Xdmf/Domain/Grid/Grid")
print str(len(grid)) + " ?= " + str(1)
print "? " + str(isinstance(grid[0], XdmfUnstructuredGrid))
assert(len(grid) == 1)
assert(isinstance(grid[0], XdmfUnstructuredGrid))
attributes = reader.read(fileName, "/Xdmf/Domain/Grid/Grid/Attribute")
print str(len(attributes)) + " ?= " + str(2)
print "? " + str(isinstance(attributes[0], XdmfAttribute))
print "? " + str(isinstance(attributes[1], XdmfAttribute))
assert(len(attributes) == 2)
assert(isinstance(attributes[0], XdmfAttribute))
assert(isinstance(attributes[1], XdmfAttribute))
information = reader.read(fileName, "/Xdmf/Domain/Grid/Grid/Information")
print str(len(information)) + " ?= " + str(1)
print "? " + str(isinstance(information[0], XdmfInformation))
assert(len(information) == 1)
assert(isinstance(information[0], XdmfInformation))
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