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// Copyright 2018 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package dirhash
import (
"archive/zip"
"crypto/sha256"
"encoding/base64"
"fmt"
"io"
"os"
"path/filepath"
"strings"
"testing"
)
func h(s string) string {
return fmt.Sprintf("%x", sha256.Sum256([]byte(s)))
}
func htop(k string, s string) string {
sum := sha256.Sum256([]byte(s))
return k + ":" + base64.StdEncoding.EncodeToString(sum[:])
}
func TestHash1(t *testing.T) {
files := []string{"xyz", "abc"}
open := func(name string) (io.ReadCloser, error) {
return io.NopCloser(strings.NewReader("data for " + name)), nil
}
want := htop("h1", fmt.Sprintf("%s %s\n%s %s\n", h("data for abc"), "abc", h("data for xyz"), "xyz"))
out, err := Hash1(files, open)
if err != nil {
t.Fatal(err)
}
if out != want {
t.Errorf("Hash1(...) = %s, want %s", out, want)
}
_, err = Hash1([]string{"xyz", "a\nbc"}, open)
if err == nil {
t.Error("Hash1: expected error on newline in filenames")
}
}
func TestHashDir(t *testing.T) {
dir := t.TempDir()
if err := os.WriteFile(filepath.Join(dir, "xyz"), []byte("data for xyz"), 0666); err != nil {
t.Fatal(err)
}
if err := os.WriteFile(filepath.Join(dir, "abc"), []byte("data for abc"), 0666); err != nil {
t.Fatal(err)
}
want := htop("h1", fmt.Sprintf("%s %s\n%s %s\n", h("data for abc"), "prefix/abc", h("data for xyz"), "prefix/xyz"))
out, err := HashDir(dir, "prefix", Hash1)
if err != nil {
t.Fatalf("HashDir: %v", err)
}
if out != want {
t.Errorf("HashDir(...) = %s, want %s", out, want)
}
}
func TestHashZip(t *testing.T) {
f, err := os.CreateTemp(t.TempDir(), "dirhash-test-")
if err != nil {
t.Fatal(err)
}
defer f.Close()
z := zip.NewWriter(f)
w, err := z.Create("prefix/xyz")
if err != nil {
t.Fatal(err)
}
w.Write([]byte("data for xyz"))
w, err = z.Create("prefix/abc")
if err != nil {
t.Fatal(err)
}
w.Write([]byte("data for abc"))
if err := z.Close(); err != nil {
t.Fatal(err)
}
if err := f.Close(); err != nil {
t.Fatal(err)
}
want := htop("h1", fmt.Sprintf("%s %s\n%s %s\n", h("data for abc"), "prefix/abc", h("data for xyz"), "prefix/xyz"))
out, err := HashZip(f.Name(), Hash1)
if err != nil {
t.Fatalf("HashDir: %v", err)
}
if out != want {
t.Errorf("HashDir(...) = %s, want %s", out, want)
}
}
func TestDirFiles(t *testing.T) {
t.Run("valid directory with files", func(t *testing.T) {
dir := t.TempDir()
if err := os.WriteFile(filepath.Join(dir, "xyz"), []byte("data for xyz"), 0666); err != nil {
t.Fatal(err)
}
if err := os.WriteFile(filepath.Join(dir, "abc"), []byte("data for abc"), 0666); err != nil {
t.Fatal(err)
}
if err := os.Mkdir(filepath.Join(dir, "subdir"), 0777); err != nil {
t.Fatal(err)
}
if err := os.WriteFile(filepath.Join(dir, "subdir", "xyz"), []byte("data for subdir xyz"), 0666); err != nil {
t.Fatal(err)
}
prefix := "foo/bar@v2.3.4"
out, err := DirFiles(dir, prefix)
if err != nil {
t.Fatalf("DirFiles: %v", err)
}
for _, file := range out {
if !strings.HasPrefix(file, prefix) {
t.Errorf("Dir file = %s, want prefix %s", file, prefix)
}
}
})
t.Run("invalid directory", func(t *testing.T) {
path := filepath.Join(t.TempDir(), "not-a-directory.txt")
if err := os.WriteFile(path, []byte("This is a file."), 0644); err != nil {
t.Fatal(err)
}
defer os.RemoveAll(path)
out, err := DirFiles(path, "")
if err == nil {
t.Errorf("DirFiles(...) = %v, expected an error", err)
}
if len(out) > 0 {
t.Errorf("DirFiles(...) = unexpected files %s", out)
}
})
}
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