112 lines
3.1 KiB
Go
112 lines
3.1 KiB
Go
// Copyright (c) 2024 Proton AG
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//
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// This file is part of Proton Mail Bridge.
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//
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// Proton Mail Bridge is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Proton Mail Bridge is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Proton Mail Bridge. If not, see <https://www.gnu.org/licenses/>.
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package sum
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import (
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"io"
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"os"
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"path/filepath"
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"testing"
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"github.com/stretchr/testify/require"
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)
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func TestRecursiveSum(t *testing.T) {
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dir := t.TempDir()
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createFiles(t, dir,
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filepath.Join("a", "1"),
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filepath.Join("a", "2"),
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filepath.Join("b", "3"),
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filepath.Join("b", "4"),
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filepath.Join("b", "c", "5"),
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filepath.Join("b", "c", "6"),
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)
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sumOriginal := sum(t, dir)
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// Renaming files should produce a different checksum.
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require.NoError(t, os.Rename(filepath.Join(dir, "a", "1"), filepath.Join(dir, "a", "11")))
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sumRenamed := sum(t, dir)
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require.NotEqual(t, sumOriginal, sumRenamed)
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// Reverting to the original name should produce the same checksum again.
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require.NoError(t, os.Rename(filepath.Join(dir, "a", "11"), filepath.Join(dir, "a", "1")))
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require.Equal(t, sumOriginal, sum(t, dir))
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// Moving files should produce a different checksum.
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require.NoError(t, os.Rename(filepath.Join(dir, "a", "1"), filepath.Join(dir, "1")))
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sumMoved := sum(t, dir)
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require.NotEqual(t, sumOriginal, sumMoved)
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// Moving files back to their original location should produce the same checksum again.
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require.NoError(t, os.Rename(filepath.Join(dir, "1"), filepath.Join(dir, "a", "1")))
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require.Equal(t, sumOriginal, sum(t, dir))
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// Changing file data should produce a different checksum.
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originalData := modifyFile(t, filepath.Join(dir, "a", "1"), []byte("something"))
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require.NotEqual(t, sumOriginal, sum(t, dir))
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// Reverting file data should produce the original checksum.
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modifyFile(t, filepath.Join(dir, "a", "1"), originalData)
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require.Equal(t, sumOriginal, sum(t, dir))
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}
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func createFiles(t *testing.T, root string, paths ...string) {
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for _, path := range paths {
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makeFile(t, filepath.Join(root, path))
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}
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}
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func makeFile(t *testing.T, path string) {
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require.NoError(t, os.MkdirAll(filepath.Dir(path), 0o700))
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f, err := os.Create(path)
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require.NoError(t, err)
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_, err = f.WriteString(path)
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require.NoError(t, err)
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require.NoError(t, f.Close())
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}
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func sum(t *testing.T, path string) []byte {
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sum, err := RecursiveSum(path, "")
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require.NoError(t, err)
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return sum
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}
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func modifyFile(t *testing.T, path string, data []byte) []byte {
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r, err := os.Open(path)
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require.NoError(t, err)
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b, err := io.ReadAll(r)
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require.NoError(t, err)
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require.NoError(t, r.Close())
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f, err := os.Create(path)
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require.NoError(t, err)
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_, err = f.Write(data)
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require.NoError(t, err)
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require.NoError(t, f.Close())
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return b
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}
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