public void TryWaitForDeleteAlwaysLogsFirstAndLastFailure()
{
string path = "mock:\\file.txt";
DeleteTestsFileSystem fileSystem = new DeleteTestsFileSystem(new[] { new KeyValuePair <string, FileAttributes>(path, FileAttributes.ReadOnly) });
fileSystem.DeleteException = new IOException();
MockTracer mockTracer = new MockTracer();
int maxRetries = 10;
PhysicalFileSystemExtensions.TryWaitForDelete(fileSystem, mockTracer, path, retryDelayMs: 0, maxRetries: maxRetries, retryLoggingThreshold: 1000).ShouldBeFalse();
fileSystem.DeleteFileCallCount.ShouldEqual(maxRetries + 1);
mockTracer.RelatedWarningEvents.Count.ShouldEqual(2, "There should be two warning events, the first and last");
mockTracer.RelatedWarningEvents[0].ShouldContain(
new[]
{
"Failed to delete file, retrying ...",
"\"failureCount\":1",
"IOException"
});
mockTracer.RelatedWarningEvents[1].ShouldContain(
new[]
{
"Failed to delete file.",
"\"failureCount\":11",
"IOException"
});
}
public void TryDeleteFileDeletesFile()
{
string path = "mock:\\file.txt";
DeleteTestsFileSystem fileSystem = new DeleteTestsFileSystem(new[] { new KeyValuePair <string, FileAttributes>(path, FileAttributes.ReadOnly) });
PhysicalFileSystemExtensions.TryDeleteFile(fileSystem, path);
fileSystem.ExistingFiles.ContainsKey(path).ShouldBeFalse("DeleteUtils failed to delete file");
}
public void TryDeleteFileDoesNotUpdateMetadataOnSuccess()
{
string path = "mock:\\file.txt";
DeleteTestsFileSystem fileSystem = new DeleteTestsFileSystem(new[] { new KeyValuePair <string, FileAttributes>(path, FileAttributes.ReadOnly) });
EventMetadata metadata = new EventMetadata();
PhysicalFileSystemExtensions.TryDeleteFile(fileSystem, path, "metadataKey", metadata).ShouldBeTrue("TryDeleteFile should succeed");
metadata.ShouldBeEmpty("TryDeleteFile should not update metadata on success");
}
public void TryDeleteFileReturnsTrueWhenSetAttributesFailsToFindFile()
{
string path = "mock:\\file.txt";
DeleteTestsFileSystem fileSystem = new DeleteTestsFileSystem(
Enumerable.Empty <KeyValuePair <string, FileAttributes> >(),
allFilesExist: true,
noOpDelete: false);
PhysicalFileSystemExtensions.TryDeleteFile(fileSystem, path).ShouldEqual(true, "TryDeleteFile should return true when SetAttributes throws FileNotFoundException");
}
public void TryDeleteFileReturnsNullExceptionOnSuccess()
{
string path = "mock:\\file.txt";
DeleteTestsFileSystem fileSystem = new DeleteTestsFileSystem(new[] { new KeyValuePair <string, FileAttributes>(path, FileAttributes.ReadOnly) });
Exception e = new Exception();
PhysicalFileSystemExtensions.TryDeleteFile(fileSystem, path, out e);
fileSystem.ExistingFiles.ContainsKey(path).ShouldBeFalse("DeleteUtils failed to delete file");
e.ShouldBeNull("Exception should be null when TryDeleteFile succeeds");
}
public void TryDeleteFileSetsAttributesToNormalBeforeDeletingFile()
{
string path = "mock:\\file.txt";
DeleteTestsFileSystem fileSystem = new DeleteTestsFileSystem(
new[] { new KeyValuePair <string, FileAttributes>(path, FileAttributes.ReadOnly) },
allFilesExist: false,
noOpDelete: true);
PhysicalFileSystemExtensions.TryDeleteFile(fileSystem, path);
fileSystem.ExistingFiles.ContainsKey(path).ShouldBeTrue("DeleteTestsFileSystem is configured as no-op delete, file should still be present");
fileSystem.ExistingFiles[path].ShouldEqual(FileAttributes.Normal, "TryDeleteFile should set attributes to Normal before deleting");
}
public void TryDeleteFileUpdatesMetadataOnFailure()
{
string path = "mock:\\file.txt";
DeleteTestsFileSystem fileSystem = new DeleteTestsFileSystem(new[] { new KeyValuePair <string, FileAttributes>(path, FileAttributes.ReadOnly) });
fileSystem.DeleteException = new IOException();
EventMetadata metadata = new EventMetadata();
PhysicalFileSystemExtensions.TryDeleteFile(fileSystem, path, "testKey", metadata).ShouldBeFalse("TryDeleteFile should fail when IOException is thrown");
metadata.ContainsKey("testKey_DeleteFailed").ShouldBeTrue();
metadata["testKey_DeleteFailed"].ShouldEqual("true");
metadata.ContainsKey("testKey_DeleteException").ShouldBeTrue();
metadata["testKey_DeleteException"].ShouldBeOfType <string>().ShouldContain("IOException");
}
public void TryWaitForDeleteSucceedsAfterFailures()
{
string path = "mock:\\file.txt";
DeleteTestsFileSystem fileSystem = new DeleteTestsFileSystem(new[] { new KeyValuePair <string, FileAttributes>(path, FileAttributes.ReadOnly) });
fileSystem.DeleteException = new IOException();
fileSystem.MaxDeleteFileExceptions = 5;
PhysicalFileSystemExtensions.TryWaitForDelete(fileSystem, null, path, retryDelayMs: 0, maxRetries: 10, retryLoggingThreshold: 1).ShouldBeTrue();
fileSystem.DeleteFileCallCount.ShouldEqual(fileSystem.MaxDeleteFileExceptions + 1);
fileSystem.ExistingFiles.Add(path, FileAttributes.ReadOnly);
fileSystem.DeleteFileCallCount = 0;
fileSystem.MaxDeleteFileExceptions = 9;
PhysicalFileSystemExtensions.TryWaitForDelete(fileSystem, null, path, retryDelayMs: 0, maxRetries: 10, retryLoggingThreshold: 1).ShouldBeTrue();
fileSystem.DeleteFileCallCount.ShouldEqual(fileSystem.MaxDeleteFileExceptions + 1);
}
public void TryDeleteFileReturnsThrownException()
{
string path = "mock:\\file.txt";
Exception deleteException = new IOException();
DeleteTestsFileSystem fileSystem = new DeleteTestsFileSystem(new[] { new KeyValuePair <string, FileAttributes>(path, FileAttributes.ReadOnly) });
fileSystem.DeleteException = deleteException;
Exception e;
PhysicalFileSystemExtensions.TryDeleteFile(fileSystem, path, out e).ShouldBeFalse("TryDeleteFile should fail on IOException");
ReferenceEquals(e, deleteException).ShouldBeTrue("TryDeleteFile should return the thrown exception");
deleteException = new UnauthorizedAccessException();
fileSystem.DeleteException = deleteException;
PhysicalFileSystemExtensions.TryDeleteFile(fileSystem, path, out e).ShouldBeFalse("TryDeleteFile should fail on UnauthorizedAccessException");
ReferenceEquals(e, deleteException).ShouldBeTrue("TryDeleteFile should return the thrown exception");
}
public void TryWaitForDeleteFailsAfterMaxRetries()
{
string path = "mock:\\file.txt";
DeleteTestsFileSystem fileSystem = new DeleteTestsFileSystem(new[] { new KeyValuePair <string, FileAttributes>(path, FileAttributes.ReadOnly) });
fileSystem.DeleteException = new IOException();
int maxRetries = 10;
PhysicalFileSystemExtensions.TryWaitForDelete(fileSystem, null, path, retryDelayMs: 0, maxRetries: maxRetries, retryLoggingThreshold: 1).ShouldBeFalse();
fileSystem.DeleteFileCallCount.ShouldEqual(maxRetries + 1);
fileSystem.DeleteFileCallCount = 0;
PhysicalFileSystemExtensions.TryWaitForDelete(fileSystem, null, path, retryDelayMs: 1, maxRetries: maxRetries, retryLoggingThreshold: 1).ShouldBeFalse();
fileSystem.DeleteFileCallCount.ShouldEqual(maxRetries + 1);
fileSystem.DeleteFileCallCount = 0;
PhysicalFileSystemExtensions.TryWaitForDelete(fileSystem, null, path, retryDelayMs: 1, maxRetries: 0, retryLoggingThreshold: 1).ShouldBeFalse();
fileSystem.DeleteFileCallCount.ShouldEqual(1);
}
