frostfs-sdk-go/netmap/Tests.md

Language-agnostic testing

json_tests sub-folder contains netmap selection algorithm tests in the following format:

File structure

Field	Description
name	Human readable name for a set of related tests operating on a single netmap.
nodes	List of netmap.NodeInfo structures coressponding to a nodes in the network.
tests	Map from a single test name to a test structure.

Single test structure

Field	Description
policy	JSON representation of a netmap policy.
pivot	Optional pivot to use in container node selection.
result	List of lists of node-indices corresponding to each replica in the placement policy.
error	Error that should be raised for this specific test. The actual strings are used in SDK, other implementation may simply check that error has occurred.
placement	Optional field containing another test for selecting placement nodes for an object. Can contain pivot, result and error fields with the same meaning as above. Note that if pivot is omitted, empty value should be used.