package main

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

	"github.com/stretchr/testify/assert"
	"github.com/stretchr/testify/require"
)

// hyperguild#157: the server refuses to start while a symlink exists in the
// brain dir (Mathias's chosen tripwire), naming it; a clean brain starts.
func TestStartupSymlinkCheckRefusesABrainWithASymlink(t *testing.T) {
	brain := t.TempDir()
	require.NoError(t, os.Symlink(t.TempDir(), filepath.Join(brain, "planted")))
	err := startupSymlinkCheck(brain)
	require.Error(t, err)
	assert.Contains(t, err.Error(), "planted")
}

func TestStartupSymlinkCheckPassesACleanBrain(t *testing.T) {
	brain := t.TempDir()
	require.NoError(t, os.WriteFile(filepath.Join(brain, "n.md"), []byte("x"), 0o644))
	assert.NoError(t, startupSymlinkCheck(brain))
}