After commit c018f5fd29 Fenrir is being switched over to go. If you do not want to be part of the testing process, please switch to master.

internal/scripts/music_test.go

@@ -0,0 +1,78 @@
+// Fenrir console screen reader.
+// Copyright (c) 2026 Storm Dragon
+// SPDX-License-Identifier: GPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify it
+// under the terms of the GNU General Public License as published by the Free
+// Software Foundation, either version 3 of the License, or (at your option)
+// any later version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT
+// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+// more details.
+//
+// You should have received a copy of the GNU General Public License along with
+// this program. If not, see <https://www.gnu.org/licenses/gpl-3.0.html>.
+
+package scripts
+
+import (
+	"context"
+	"os"
+	"path/filepath"
+	"strings"
+	"testing"
+	"time"
+)
+
+// Exercise an unchanged real music controller, with every external action
+// replaced by a private executable. Never control the contributor's player.
+func TestInstalledMusicControllerWithFakePlayerctl(t *testing.T) {
+	source := os.Getenv("FENRIR_MUSIC_SCRIPT")
+	if source == "" {
+		t.Skip("set FENRIR_MUSIC_SCRIPT to test an existing music controller")
+	}
+	data, err := os.ReadFile(source)
+	if err != nil {
+		t.Fatal(err)
+	}
+	root := t.TempDir()
+	bin := filepath.Join(root, "bin")
+	if err := os.Mkdir(bin, 0700); err != nil {
+		t.Fatal(err)
+	}
+	write := func(path, body string) {
+		t.Helper()
+		if err := os.WriteFile(path, []byte(body), 0700); err != nil {
+			t.Fatal(err)
+		}
+	}
+	write(filepath.Join(bin, "id"), "#!/bin/sh\ncase \"$1\" in -un) echo Username;; *) echo 1000;; esac\n")
+	write(filepath.Join(bin, "sleep"), "#!/bin/sh\nexit 0\n")
+	write(filepath.Join(bin, "sudo"), "#!/bin/sh\nexit 99\n")
+	write(filepath.Join(bin, "playerctl"), "#!/bin/sh\necho \"$*\" >> \"$SCRIPT_ACTION_LOG\"\ncase \"$*\" in *metadata*) echo 'Sample title by Sample artist';; esac\n")
+	t.Setenv("PATH", bin)
+	t.Setenv("SCRIPT_ACTION_LOG", filepath.Join(root, "actions"))
+	path := filepath.Join(root, "musicplayer.sh")
+	if err := os.WriteFile(path, data, 0700); err != nil {
+		t.Fatal(err)
+	}
+	runner := New_runner(context.Background(), Limits{Workers: 1, Queue: 1, OutputBytes: 4096, Timeout: time.Second}, func(int) string { return "Username" })
+	defer runner.Close()
+	for _, fixture := range []struct{ key, action string }{{"z", "previous"}, {"x", "play"}, {"c", "play-pause"}, {"v", "stop"}, {"b", "next"}, {"s", "shuffle toggle"}, {"u", "metadata"}, {"minus", "volume 0.05-"}, {"equal", "volume 0.05+"}} {
+		link := filepath.Join(root, "musicplayer__-__key_shift__+__key_"+fixture.key+".sh")
+		if err := os.Symlink(path, link); err != nil {
+			t.Fatal(err)
+		}
+		if err := os.WriteFile(filepath.Join(root, "actions"), nil, 0600); err != nil {
+			t.Fatal(err)
+		}
+		runner.Submit(Invocation{Script: Script{Path: link}})
+		result := receive_result(t, runner)
+		actions, err := os.ReadFile(filepath.Join(root, "actions"))
+		if err != nil || result.Err != nil || result.Stderr != "" || !strings.Contains(string(actions), fixture.action) {
+			t.Fatal(fixture, result, string(actions), err)
+		}
+	}
+}