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Copy pathcopy_test.go
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copy_test.go
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package fs
import (
"os"
"path/filepath"
"strings"
"testing"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
func TestCopyFile(t *testing.T) {
src, err := os.CreateTemp("", "")
require.NoError(t, err)
t.Cleanup(func() {
err := os.RemoveAll(src.Name())
assert.NoError(t, err)
})
err = os.WriteFile(src.Name(), []byte("Contents"), 0600)
require.NoError(t, err)
dst, err := os.CreateTemp("", "")
require.NoError(t, err)
t.Cleanup(func() {
err := os.RemoveAll(dst.Name())
assert.NoError(t, err)
})
err = CopyFile(src.Name(), dst.Name())
require.NoError(t, err)
}
func TestCopyFile_Permissions(t *testing.T) {
const perms = os.FileMode(0700)
src, err := os.CreateTemp("", "")
require.NoError(t, err)
t.Cleanup(func() {
err := os.RemoveAll(src.Name())
assert.NoError(t, err)
})
err = os.WriteFile(src.Name(), []byte("Contents"), 0600)
require.NoError(t, err)
err = os.Chmod(src.Name(), perms)
require.NoError(t, err)
dst, err := os.CreateTemp("", "")
require.NoError(t, err)
t.Cleanup(func() {
err := os.RemoveAll(dst.Name())
assert.NoError(t, err)
})
err = CopyFile(src.Name(), dst.Name())
require.NoError(t, err)
fi, err := os.Stat(dst.Name())
require.NoError(t, err)
assert.Equal(t, perms, fi.Mode()&os.ModePerm)
}
// Test case where destination directory doesn't exist.
func TestCopyFile_NonExistentDestDir(t *testing.T) {
// nolint:gosec
src, err := os.CreateTemp("", "")
require.NoError(t, err)
t.Cleanup(func() {
err := os.RemoveAll(src.Name())
assert.NoError(t, err)
})
err = CopyFile(src.Name(), "non-existent/dest")
require.EqualError(t, err, "destination directory doesn't exist: \"non-existent\"")
}
func TestCopyRecursive_NonExistentDest(t *testing.T) {
src := t.TempDir()
err := os.MkdirAll(filepath.Join(src, "data"), 0750)
require.NoError(t, err)
// nolint:gosec
err = os.WriteFile(filepath.Join(src, "data", "file.txt"), []byte("Test"), 0644)
require.NoError(t, err)
dstParent := t.TempDir()
dst := filepath.Join(dstParent, "dest")
err = CopyRecursive(src, dst)
require.NoError(t, err)
compareDirs(t, src, dst)
}
func TestCopyRecursive_ExistentDest(t *testing.T) {
src := t.TempDir()
err := os.MkdirAll(filepath.Join(src, "data"), 0750)
require.NoError(t, err)
// nolint:gosec
err = os.WriteFile(filepath.Join(src, "data", "file.txt"), []byte("Test"), 0644)
require.NoError(t, err)
dst := t.TempDir()
err = CopyRecursive(src, dst)
require.NoError(t, err)
compareDirs(t, src, dst)
}
func compareDirs(t *testing.T, src, dst string) {
sfi, err := os.Stat(src)
require.NoError(t, err)
dfi, err := os.Stat(dst)
require.NoError(t, err)
require.Equal(t, sfi.Mode(), dfi.Mode())
err = filepath.Walk(src, func(srcPath string, info os.FileInfo, err error) error {
if err != nil {
return err
}
relPath := strings.TrimPrefix(srcPath, src)
dstPath := filepath.Join(dst, relPath)
sfi, err := os.Stat(srcPath)
require.NoError(t, err)
dfi, err := os.Stat(dstPath)
require.NoError(t, err)
require.Equal(t, sfi.Mode(), dfi.Mode())
if sfi.IsDir() {
return nil
}
// nolint:gosec
srcData, err := os.ReadFile(srcPath)
require.NoError(t, err)
// nolint:gosec
dstData, err := os.ReadFile(dstPath)
require.NoError(t, err)
require.Equal(t, srcData, dstData)
return nil
})
require.NoError(t, err)
}