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(ns unheard.midi-test
(:require [unheard.midi :as sut]
[hyperfiddle.rcf :refer [tests]])
(:import [javax.sound.midi ShortMessage]))
(defn short-message [cmd ch d1 d2]
(ShortMessage. cmd ch d1 d2))
(tests "short-message->notes"
(let [msgs
[(short-message ShortMessage/NOTE_ON 0 1 100)
;; Irrelevant messages don't appear
(short-message ShortMessage/CONTROL_CHANGE 0 1 100)
(short-message ShortMessage/NOTE_ON 0 2 100)
;; Notes are removed
(short-message ShortMessage/NOTE_OFF 0 2 100)
(short-message ShortMessage/NOTE_OFF 0 1 100)
(short-message ShortMessage/NOTE_ON 0 3 100)
(short-message ShortMessage/NOTE_ON 0 4 100)
;; Specifying channel works
(short-message ShortMessage/NOTE_ON 1 1 100)
(short-message ShortMessage/NOTE_ON 1 2 100)
;; All notes off works
(short-message ShortMessage/CONTROL_CHANGE 0 123 0)
(short-message ShortMessage/CONTROL_CHANGE 1 123 0)]]
(into []
(transduce
sut/short-message->notes
conj
[]
msgs))
:= [{0 {1 100}}
{0 {1 100
2 100}}
{0 {1 100}}
{0 {}}
{0 {3 100}}
{0 {3 100
4 100}}
{0 {3 100
4 100}
1 {1 100}}
{0 {3 100
4 100}
1 {1 100
2 100}}
{0 {}
1 {1 100
2 100}}
{0 {}
1 {}}]))
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