nativeaudio

audio playback for Go
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play_test.go (994B)

      1 package play_test
      2 
      3 import (
      4 	"testing"
      5 	"time"
      6 
      7 	"git.sr.ht/~jackmordaunt/nativeaudio"
      8 	"git.sr.ht/~jackmordaunt/nativeaudio/play"
      9 )
     10 
     11 // TestDuration covers the calculation that bounds the playback wait, so
     12 // a mistake there cannot quietly reintroduce an unbounded one.
     13 func TestDuration(t *testing.T) {
     14 	stereo := nativeaudio.Format{SampleRate: 44100, Channels: 2, BytesPerSample: 2}
     15 	mono := nativeaudio.Format{SampleRate: 8000, Channels: 1, BytesPerSample: 2}
     16 
     17 	for _, tc := range []struct {
     18 		name   string
     19 		bytes  int
     20 		format nativeaudio.Format
     21 		want   time.Duration
     22 	}{
     23 		{"one second stereo", 44100 * 2 * 2, stereo, time.Second},
     24 		{"half a second stereo", 44100 * 2, stereo, time.Second / 2},
     25 		{"one second mono", 8000 * 2, mono, time.Second},
     26 		{"nothing", 0, stereo, 0},
     27 		{"degenerate format", 1024, nativeaudio.Format{}, 0},
     28 	} {
     29 		got := play.Duration(make([]byte, tc.bytes), tc.format)
     30 		if got != tc.want {
     31 			t.Errorf("%s: got %v, want %v", tc.name, got, tc.want)
     32 		}
     33 	}
     34 }