69 lines
2.2 KiB
Go
69 lines
2.2 KiB
Go
//go:build !windows
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package gui
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import (
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"os"
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"os/exec"
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"path/filepath"
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"testing"
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)
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// A second magpie on the same config finds the first one's lock held, a
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// copy elsewhere (magpie-dev) has its own, and a lock whose holder ended,
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// as when the Mac shuts down with magpie running, is free again (Crispin
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// on Discord: two magpies after each boot).
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func TestOneMagpieAtATime(t *testing.T) {
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dir := t.TempDir()
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if os.Getenv("MAGPIE_HOLD_LOCK") != "" {
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if held, err := holdInstance(os.Getenv("MAGPIE_HOLD_LOCK")); err != nil || !held {
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os.Exit(3)
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}
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os.Stdout.WriteString("held\n")
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select {}
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}
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lock := instanceLock(dir, "/Applications/Magpie.app/Contents/MacOS/magpie")
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if dev := instanceLock(dir, "/src/magpie/magpie-dev"); dev == lock {
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t.Fatal("magpie-dev shares the app's lock")
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}
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// every installed copy shares the lock: another magpie.app (one the
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// Mac reopens, one run translocated from Downloads) and Homebrew's of
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// any version (inaction on Discord: two birds after a restart)
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for _, other := range []string{
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"/Users/u/Downloads/magpie.app/Contents/MacOS/magpie",
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"/private/var/folders/x/T/AppTranslocation/1F2E/d/magpie.app/Contents/MacOS/magpie",
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"/opt/homebrew/Cellar/magpie/0.1.900/bin/magpie",
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} {
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if instanceLock(dir, other) != lock {
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t.Errorf("%s has a lock of its own", other)
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}
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}
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if filepath.Dir(lock) != dir {
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t.Fatalf("lock %s not in the config dir", lock)
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}
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// the first magpie: another process, killed as a shutdown would
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cmd := exec.Command(os.Args[0], "-test.run=^TestOneMagpieAtATime$")
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cmd.Env = append(os.Environ(), "MAGPIE_HOLD_LOCK="+lock)
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out, _ := cmd.StdoutPipe()
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if err := cmd.Start(); err != nil {
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t.Fatal(err)
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}
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buf := make([]byte, 5)
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if _, err := out.Read(buf); err != nil || string(buf[:4]) != "held" {
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cmd.Process.Kill()
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t.Fatalf("the first magpie didn't take the lock: %q %v", buf, err)
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}
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if held, err := holdInstance(lock); err != nil || held {
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cmd.Process.Kill()
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t.Fatalf("a second magpie took the held lock: %v %v", held, err)
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}
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cmd.Process.Kill()
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cmd.Wait()
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if held, err := holdInstance(lock); err != nil || !held {
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t.Fatalf("the lock of a magpie that was killed stayed held: %v %v", held, err)
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}
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heldInstance.Close()
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heldInstance = nil
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}
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