[graph-tool] graph-tool testing package

Hi, I'm looking for info on the testing package used to test graph-tool, specifclly in case I want to know what test cases were used to test a specific alghorithm li - whee can I find it i.e. : "graph_tool.topology. kcore_decomposition(*g*, *deg='out'*, *vprop=None*)" thanks, Nadav <https://graph-tool.skewed.de/static/doc/topology.html#graph_tool.topology.kcore_decomposition>