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// -*- Mode: Go; indent-tabs-mode: t -*-
/*
* Copyright (C) 2014-2015 Canonical Ltd
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 3 as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
package osutil_test
import (
"crypto"
"crypto/sha512"
"os"
"path/filepath"
. "gopkg.in/check.v1"
"github.com/snapcore/snapd/osutil"
)
type FileDigestSuite struct{}
var _ = Suite(&FileDigestSuite{})
func (ts *FileDigestSuite) TestFileDigest(c *C) {
exData := []byte("hashmeplease")
tempdir := c.MkDir()
fn := filepath.Join(tempdir, "ex.file")
err := os.WriteFile(fn, exData, 0644)
c.Assert(err, IsNil)
digest, size, err := osutil.FileDigest(fn, crypto.SHA512)
c.Assert(err, IsNil)
c.Check(size, Equals, uint64(len(exData)))
h512 := sha512.Sum512(exData)
c.Check(digest, DeepEquals, h512[:])
}
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