mirror of
https://github.com/gravitational/teleport.git
synced 2026-11-02 06:08:23 +08:00
113 lines
3.1 KiB
Go
113 lines
3.1 KiB
Go
/*
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Copyright 2022 Gravitational, Inc.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package utils
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import (
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"context"
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"os"
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"path/filepath"
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"testing"
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"time"
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"github.com/stretchr/testify/require"
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)
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func TestLocks(t *testing.T) {
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t.Parallel()
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tmpFile, err := os.CreateTemp("", "teleport-lock-test")
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fp := tmpFile.Name()
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t.Cleanup(func() {
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_ = os.Remove(fp)
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})
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require.NoError(t, err)
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// Can take read lock
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unlock, err := FSTryReadLock(fp)
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require.NoError(t, err)
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require.NoError(t, unlock())
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// Can take write lock
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unlock, err = FSTryWriteLock(fp)
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require.NoError(t, err)
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// Can't take read lock while write lock is held.
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unlock2, err := FSTryReadLock(fp)
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require.ErrorIs(t, err, ErrUnsuccessfulLockTry)
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require.Nil(t, unlock2)
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// Can't take write lock while another write lock is held.
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unlock2, err = FSTryWriteLock(fp)
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require.ErrorIs(t, err, ErrUnsuccessfulLockTry)
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require.Nil(t, unlock2)
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require.NoError(t, unlock())
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unlock, err = FSTryReadLock(fp)
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require.NoError(t, err)
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// Can take second read lock on the same file.
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unlock2, err = FSTryReadLock(fp)
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require.NoError(t, err)
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require.NoError(t, unlock())
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require.NoError(t, unlock2())
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// Can take read lock with timeout
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unlock, err = FSTryReadLockTimeout(context.Background(), fp, time.Second)
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require.NoError(t, err)
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require.NoError(t, unlock())
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// Can take write lock with timeout
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unlock, err = FSTryWriteLockTimeout(context.Background(), fp, time.Second)
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require.NoError(t, err)
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// Fails because timeout is exceeded, since file is already locked.
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unlock2, err = FSTryWriteLockTimeout(context.Background(), fp, time.Millisecond)
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require.ErrorIs(t, err, context.DeadlineExceeded)
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require.Nil(t, unlock2)
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// Fails because context is expired while waiting for timeout.
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ctx, cancel := context.WithDeadline(context.Background(), time.Now())
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defer cancel()
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unlock2, err = FSTryWriteLockTimeout(ctx, fp, time.Hour*1000)
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require.ErrorIs(t, err, context.DeadlineExceeded)
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require.Nil(t, unlock2)
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require.NoError(t, unlock())
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}
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func TestOverwriteFile(t *testing.T) {
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have := []byte("Sensitive Information")
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fName := filepath.Join(t.TempDir(), "teleport-overwrite-file-test")
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require.NoError(t, os.WriteFile(fName, have, 0600))
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require.NoError(t, overwriteFile(fName))
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contents, err := os.ReadFile(fName)
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require.NoError(t, err)
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require.NotContains(t, contents, have, "File contents were not overwritten")
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}
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func TestRemoveSecure(t *testing.T) {
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f, err := os.Create(filepath.Join(t.TempDir(), "teleport-remove-secure-test"))
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require.NoError(t, err)
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require.NoError(t, f.Close())
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require.NoError(t, RemoveSecure(f.Name()))
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}
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