# Functions
LoadUnixFSFile loads a fixtures file into the given DAG Service, returning an ipld.Link for the file and the original file bytes.
NewGraphsyncTestingData returns a new GraphsyncTestingData instance.
VerifyHasFile verifies the presence of the given file with the given ipld.Link and file contents (fileBytes) exists in the given blockstore identified by dagService.
# Structs
GraphsyncTestingData is a test harness for testing data transfer on top of graphsync.