Generator.Debug
val coverage :
(module Base.Comparator.S
with type comparator_witness = 'cmp
and type t = 'k) ->
'k Base.Sequence.t ->
('k, Base.int, 'cmp) Base.Map.t
coverage (module Key) sample
counts how many times each key appears in sample
.
See Test.with_sample
for a convenient way to generate sample
.
monitor t ~f
returns a generator which gives the same values as t
and also calls f
for each value. This can help diagnose behavior of generators "hidden" behind map
, filter
, etc. One might count the number of values a generator produces, or record the set of values that do not satisfy some filter.