package main

import (
	"os"
	"path/filepath"
	"testing"
)

func TestListenRequiresAbsoluteSocketPath(t *testing.T) {
	if _, err := listen("relative.sock"); err == nil {
		t.Fatal("relative alarm socket path accepted")
	}
}

func TestListenRefusesNonSocketPath(t *testing.T) {
	path := filepath.Join(t.TempDir(), "alarm.sock")
	if err := os.WriteFile(path, []byte("keep"), 0o600); err != nil {
		t.Fatal(err)
	}
	if _, err := listen(path); err == nil {
		t.Fatal("non-socket path was replaced")
	}
	content, err := os.ReadFile(path)
	if err != nil || string(content) != "keep" {
		t.Fatalf("protected path content = %q, %v", content, err)
	}
}

func TestListenCreatesUnixSocket(t *testing.T) {
	path := filepath.Join(t.TempDir(), "runtime", "alarm.sock")
	listener, err := listen(path)
	if err != nil {
		t.Fatal(err)
	}
	defer listener.Close()
	info, err := os.Lstat(path)
	if err != nil {
		t.Fatal(err)
	}
	if info.Mode()&os.ModeSocket == 0 {
		t.Fatalf("socket mode = %v", info.Mode())
	}
}