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unlinked_file_test.go
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unlinked_file_test.go
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// Copyright 2023 Google Inc. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// Provides integration tests for operation on unlinked local files.
package local_file_test
import (
"path"
"testing"
. "github.com/googlecloudplatform/gcsfuse/tools/integration_tests/util/client"
"github.com/googlecloudplatform/gcsfuse/tools/integration_tests/util/operations"
"github.com/googlecloudplatform/gcsfuse/tools/integration_tests/util/setup"
)
func TestStatOnUnlinkedLocalFile(t *testing.T) {
testDirPath = setup.SetupTestDirectory(testDirName)
// Create a local file.
filePath, fh := CreateLocalFileInTestDir(ctx, storageClient, testDirPath, FileName1, t)
// Unlink the local file.
operations.RemoveFile(filePath)
// Stat the local file and validate error.
operations.ValidateNoFileOrDirError(path.Join(testDirPath, FileName1), t)
// Close the file and validate that file is not created on GCS.
operations.CloseFileShouldNotThrowError(fh, t)
ValidateObjectNotFoundErrOnGCS(ctx, storageClient, testDirName, FileName1, t)
}
func TestReadDirContainingUnlinkedLocalFiles(t *testing.T) {
testDirPath = setup.SetupTestDirectory(testDirName)
// Create local files.
_, fh1 := CreateLocalFileInTestDir(ctx, storageClient, testDirPath, FileName1, t)
_, fh2 := CreateLocalFileInTestDir(ctx, storageClient, testDirPath, FileName2, t)
filepath3, fh3 := CreateLocalFileInTestDir(ctx, storageClient, testDirPath, FileName3, t)
// Unlink local file 3.
operations.RemoveFile(filepath3)
// Attempt to list testDir.
entries := operations.ReadDirectory(testDirPath, t)
// Verify unlinked entries are not listed.
operations.VerifyCountOfDirectoryEntries(2, len(entries), t)
operations.VerifyFileEntry(entries[0], FileName1, 0, t)
operations.VerifyFileEntry(entries[1], FileName2, 0, t)
// Close the local files and validate they are written to GCS.
CloseFileAndValidateContentFromGCS(ctx, storageClient, fh1, testDirName,
FileName1, "", t)
CloseFileAndValidateContentFromGCS(ctx, storageClient, fh2, testDirName,
FileName2, "", t)
// Verify unlinked file is not written to GCS.
operations.CloseFileShouldNotThrowError(fh3, t)
ValidateObjectNotFoundErrOnGCS(ctx, storageClient, testDirName, FileName3, t)
}
func TestWriteOnUnlinkedLocalFileSucceeds(t *testing.T) {
testDirPath = setup.SetupTestDirectory(testDirName)
// Create local file.
filepath, fh := CreateLocalFileInTestDir(ctx, storageClient, testDirPath, FileName1, t)
// Verify unlink operation succeeds.
operations.RemoveFile(filepath)
operations.ValidateNoFileOrDirError(path.Join(testDirPath, FileName1), t)
// Write to unlinked local file.
operations.WriteWithoutClose(fh, FileContents, t)
// Validate flush file does not throw error.
operations.CloseFileShouldNotThrowError(fh, t)
// Validate unlinked file is not written to GCS.
ValidateObjectNotFoundErrOnGCS(ctx, storageClient, testDirName, FileName1, t)
}
func TestSyncOnUnlinkedLocalFile(t *testing.T) {
testDirPath = setup.SetupTestDirectory(testDirName)
// Create local file.
filepath, fh := CreateLocalFileInTestDir(ctx, storageClient, testDirPath, FileName1, t)
// Attempt to unlink local file.
operations.RemoveFile(filepath)
// Verify unlink operation succeeds.
operations.ValidateNoFileOrDirError(path.Join(testDirPath, FileName1), t)
// Validate sync operation does not write to GCS after unlink.
operations.SyncFile(fh, t)
ValidateObjectNotFoundErrOnGCS(ctx, storageClient, testDirName, FileName1, t)
// Close the local file and validate it is not present on GCS.
operations.CloseFileShouldNotThrowError(fh, t)
ValidateObjectNotFoundErrOnGCS(ctx, storageClient, testDirName, FileName1, t)
}