Module Expect_test_configSource
include Expect_test_config_types.S with type 'a IO.t = 'a
Run an IO operation until completion
sanitize can be used to map all output strings, e.g. for cleansing.
upon_unreleasable_issue specifies how to deal with output that should not be released even if it is accepted (e.g. backtraces). The default is `CR.