1 files changed, 60 insertions, 0 deletions
diff --git a/internal/gui/audio_player_test.go b/internal/gui/audio_player_test.go
new file mode 100644
index 0000000..2dd3b0c
--- /dev/null
+++ b/internal/gui/audio_player_test.go
@@ -0,0 +1,60 @@
+package gui
+
+import (
+	"errors"
+	"path/filepath"
+	"reflect"
+	"testing"
+)
+
+func TestLinuxAudioCommandCandidates(t *testing.T) {
+	t.Run("mp3 prefers mpg123", func(t *testing.T) {
+		audioFile := "/tmp/audio.mp3"
+		got := linuxAudioCommandCandidates(audioFile)
+		want := []audioCommandCandidate{
+			{name: "mpg123", args: []string{"-q", audioFile}},
+			{name: "ffplay", args: []string{"-nodisp", "-autoexit", "-loglevel", "quiet", audioFile}},
+			{name: "play", args: []string{"-q", audioFile}},
+			{name: "paplay", args: []string{audioFile}},
+			{name: "aplay", args: []string{"-q", audioFile}},
+		}
+		if !reflect.DeepEqual(got, want) {
+			t.Fatalf("linuxAudioCommandCandidates(mp3) mismatch\nwant: %#v\ngot:  %#v", want, got)
+		}
+	})
+
+	t.Run("wav avoids mpg123", func(t *testing.T) {
+		audioFile := "/tmp/audio.wav"
+		got := linuxAudioCommandCandidates(audioFile)
+		if got[0].name != "ffplay" {
+			t.Fatalf("first wav candidate = %q, want %q", got[0].name, "ffplay")
+		}
+		for _, candidate := range got {
+			if candidate.name == "mpg123" {
+				t.Fatalf("wav candidates unexpectedly include mpg123: %#v", got)
+			}
+		}
+	})
+}
+
+func TestLinuxAudioPlaybackCommandUsesFormatCompatiblePlayer(t *testing.T) {
+	audioFile := "/tmp/audio.wav"
+	cmd, err := linuxAudioPlaybackCommand(audioFile, func(name string) (string, error) {
+		switch name {
+		case "ffplay":
+			return filepath.Join("/usr/bin", name), nil
+		default:
+			return "", errors.New("not found")
+		}
+	})
+	if err != nil {
+		t.Fatalf("linuxAudioPlaybackCommand() unexpected error: %v", err)
+	}
+
+	if got, want := filepath.Base(cmd.Path), "ffplay"; got != want {
+		t.Fatalf("command path base = %q, want %q", got, want)
+	}
+	if len(cmd.Args) < 2 || cmd.Args[len(cmd.Args)-1] != audioFile {
+		t.Fatalf("command args = %#v, want final arg %q", cmd.Args, audioFile)
+	}
+}