Maksim Totmin
4c34f0bedc
Streams H.264 to the Galahad II LCD via USB (gousb) with: - ffmpeg CLI transcoding (no fragile FFmpeg C-ABI bindings) - pure-Go Annex-B access-unit splitting - framerate pacing with graceful shutdown and USB reconnect - TOML config, cobra CLI, structured slog logging, unit tests
60 lines
1.4 KiB
Go
60 lines
1.4 KiB
Go
package service
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import (
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"context"
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"os"
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"path/filepath"
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"testing"
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)
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// fakeSystemctl installs a fake systemctl on PATH and returns the path to its
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// directory.
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func fakeSystemctl(t *testing.T, script string) string {
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t.Helper()
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dir := t.TempDir()
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path := filepath.Join(dir, "systemctl")
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if err := os.WriteFile(path, []byte("#!/bin/sh\n"+script), 0o755); err != nil {
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t.Fatal(err)
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}
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t.Setenv("PATH", dir+string(os.PathListSeparator)+os.Getenv("PATH"))
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return path
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}
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func TestRestartSuccess(t *testing.T) {
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fakeSystemctl(t, "exit 0\n")
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if err := New("galahad2lcd").Restart(context.Background()); err != nil {
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t.Fatalf("Restart error = %v", err)
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}
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}
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func TestRestartFailure(t *testing.T) {
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fakeSystemctl(t, "echo 'permission denied' >&2; exit 1\n")
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err := New("galahad2lcd").Restart(context.Background())
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if err == nil {
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t.Fatal("Restart returned nil error, want failure")
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}
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}
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func TestRestartCancellation(t *testing.T) {
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fakeSystemctl(t, "sleep 5\n")
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ctx, cancel := context.WithCancel(context.Background())
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cancel()
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err := New("galahad2lcd").Restart(ctx)
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if err == nil {
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t.Fatal("Restart returned nil error for cancelled context")
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}
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}
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// Ensure the default constructor wires up the real exec.CommandContext.
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func TestNewDefaultRunCmd(t *testing.T) {
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s := New("x")
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if s.runCmd == nil {
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t.Fatal("runCmd not initialised")
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}
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cmd := s.runCmd(context.Background(), "true")
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if cmd == nil {
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t.Fatal("runCmd returned nil command")
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}
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}
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