+// 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"
+ "io/ioutil"
+ "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 ioutil.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, err := ioutil.TempDir("", "dirhash-test-")
+ if err != nil {
+ t.Fatal(err)
+ }
+ defer os.RemoveAll(dir)
+ if err := ioutil.WriteFile(filepath.Join(dir, "xyz"), []byte("data for xyz"), 0666); err != nil {
+ t.Fatal(err)
+ }
+ if err := ioutil.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 := ioutil.TempFile("", "dirhash-test-")
+ if err != nil {
+ t.Fatal(err)
+ }
+ defer os.Remove(f.Name())
+ 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) {
+ dir, err := ioutil.TempDir("", "dirfiles-test-")
+ if err != nil {
+ t.Fatal(err)
+ }
+ defer os.RemoveAll(dir)
+ if err := ioutil.WriteFile(filepath.Join(dir, "xyz"), []byte("data for xyz"), 0666); err != nil {
+ t.Fatal(err)
+ }
+ if err := ioutil.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 := ioutil.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)
+ }
+ }
+}