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CoditCompany/fsharp-rx-marble-filter.fs

Last active February 18, 2020 16:35
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F# reactive marble testing of the filter operator
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fsharp-rx-marble-filter.fs
[<Fact>]
let ``filter emit only those items from an observable that pass a predicate test`` () =
TestSchedule.usage <| fun sch ->
let stub = cold "--2-(30)--(22)-5--(60)-1--|" sch
let expected = "-- -(30)--(22)- --(60)- --|"
stub |> Observable.filter (fun x -> int x > 10)
|> Marbles.expectMessages sch expected
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