mirror of
https://github.com/tailscale/tailscale.git
synced 2025-11-04 10:11:18 +01:00
53 lines
1.3 KiB
Go
53 lines
1.3 KiB
Go
// Copyright (c) Tailscale Inc & AUTHORS
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// SPDX-License-Identifier: BSD-3-Clause
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package main
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import (
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"crypto/sha256"
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"fmt"
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"os"
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"runtime"
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"testing"
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)
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// setupTmpdir sets up a known golden layout, covering all allowed file/folder types in a nar
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func setupTmpdir(t *testing.T) string {
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tmpdir := t.TempDir()
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pwd, _ := os.Getwd()
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os.Chdir(tmpdir)
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defer os.Chdir(pwd)
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os.MkdirAll("sub/dir", 0755)
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os.Symlink("brokenfile", "brokenlink")
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os.Symlink("sub/dir", "dirl")
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os.Symlink("/abs/nonexistentdir", "dirb")
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os.Create("sub/dir/file1")
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f, _ := os.Create("file2m")
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_ = f.Truncate(2 * 1024 * 1024)
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f.Close()
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os.Symlink("../file2m", "sub/goodlink")
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return tmpdir
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}
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func TestWriteNar(t *testing.T) {
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if runtime.GOOS == "windows" {
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// Skip test on Windows as the Nix package manager is not supported on this platform
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t.Skip("nix package manager is not available on Windows")
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}
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dir := setupTmpdir(t)
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t.Run("nar", func(t *testing.T) {
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// obtained via `nix-store --dump /tmp/... | sha256sum` of the above test dir
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expected := "727613a36f41030e93a4abf2649c3ec64a2757ccff364e3f6f7d544eb976e442"
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h := sha256.New()
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os.Chdir(dir)
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err := writeNAR(h, os.DirFS("."))
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if err != nil {
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t.Fatal(err)
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}
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hash := fmt.Sprintf("%x", h.Sum(nil))
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if expected != hash {
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t.Fatal("sha256sum of nar not matched", hash, expected)
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}
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})
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}
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