public void WithBookmarkedLogAtTheEndOfFirstFile_ThenAllNextFilesAreRead()
{
GivenLogFilesInDirectory(files: 2);
var initialFile = LogFiles[0];
var otherFile = LogFiles[1];
var batchCount = Fixture.Create <int>();
var otherFileLength = BatchPostingLimit * batchCount;
GivenFileDeleteSucceeds(initialFile);
GivenPersistedBookmark(initialFile, Fixture.Create <long>());
GivenLockedFileLength(initialFile, length: CurrentLogFilePosition);
GivenLockedFileLength(otherFile, length: otherFileLength);
GivenLogReader(initialFile, length: CurrentLogFilePosition, maxStreams: int.MaxValue);
GivenLogReader(otherFile, length: otherFileLength, maxStreams: int.MaxValue);
GivenSendIsSuccessful();
WhenLogShipperIsCalled();
this.ShouldSatisfyAllConditions(
() => LogFiles.ShouldBe(new[] { otherFile }, "Only one shall remain!"),
() => CurrentLogFileName.ShouldBe(otherFile),
() => CurrentLogFilePosition.ShouldBe(otherFileLength),
() => SentBatches.ShouldBe(batchCount),
() => SentRecords.ShouldBe(otherFileLength)
);
}
public void AndBookmarkHasNoData()
{
GivenPersistedBookmark(logFileName: null, position: 0);
GivenLogFilesInDirectory(files: 0);
WhenLogShipperIsCalled();
this.ShouldSatisfyAllConditions(
"Shipper does not progress",
() => CurrentLogFileName.ShouldBeNull(),
() => CurrentLogFilePosition.ShouldBe(0)
);
}
public void AndBookmarkHasData()
{
GivenPersistedBookmark(logFileName: Fixture.Create <string>(), position: Fixture.Create <long>());
GivenLogFilesInDirectory(files: 0);
WhenLogShipperIsCalled();
this.ShouldSatisfyAllConditions(
"Shipper does not progress and resets bookmark data",
() => CurrentLogFileName.ShouldBeNull(),
() => CurrentLogFilePosition.ShouldBe(0)
);
}
public void WithBookmarkedLogCannotBeOpened_ThenPreviousFilesAreDeletedButNotLast()
{
GivenLogFilesInDirectory();
Array.ForEach(LogFiles.Take(LogFiles.Length - 1).ToArray(), GivenFileDeleteSucceeds);
var bookmarkedFile = LogFiles.Last();
var bookmarkedPosition = Fixture.Create <long>();
GivenPersistedBookmark(bookmarkedFile, bookmarkedPosition);
GivenLogReaderCreateIOError(CurrentLogFileName, CurrentLogFilePosition);
WhenLogShipperIsCalled();
this.ShouldSatisfyAllConditions(
() => CurrentLogFileName.ShouldBe(bookmarkedFile, "Bookmarked log file name should not change"),
() => CurrentLogFilePosition.ShouldBe(bookmarkedPosition, "Bookmarked position should not change"),
() => LogFiles.ShouldBe(new[] { bookmarkedFile }, "Only one shall remain!")
);
}
public void WithFailureLockingFileAndGettingLength_ThenProcessingStopsInTheEndOfTheFile()
{
GivenLogFilesInDirectory(files: 2);
var initialFile = LogFiles[0];
var initialPosition = Fixture.Create <long>();
var otherFile = LogFiles[1];
GivenPersistedBookmark(initialFile, initialPosition);
GivenFileCannotBeLocked(initialFile);
GivenLogReader(initialFile, length: initialPosition, maxStreams: 0);
WhenLogShipperIsCalled();
this.ShouldSatisfyAllConditions(
() => LogFiles.ShouldBe(new[] { initialFile, otherFile }, "No files should be removed."),
() => CurrentLogFileName.ShouldBe(initialFile),
() => CurrentLogFilePosition.ShouldBe(initialPosition)
);
}
public void WhenLogFileSizeIsLessThanBookmarkPosition_ThenFileIsReadFromTheBeginning()
{
GivenLogFilesInDirectory(1);
var initialFile = LogFiles[0];
var batchesCount = Fixture.Create <int>();
var realFileLength = batchesCount * BatchPostingLimit;
var bookmarkedPosition = realFileLength + Fixture.Create <int>();
GivenPersistedBookmark(initialFile, position: bookmarkedPosition);
GivenLockedFileLength(initialFile, length: realFileLength);
GivenLogReader(initialFile, length: realFileLength, maxStreams: int.MaxValue);
GivenSendIsSuccessful();
WhenLogShipperIsCalled();
this.ShouldSatisfyAllConditions(
() => CurrentLogFileName.ShouldBe(initialFile),
() => CurrentLogFilePosition.ShouldBe(realFileLength),
() => SentBatches.ShouldBe(batchesCount),
() => SentRecords.ShouldBe(realFileLength)
);
}
public void WithSendFailure_ThenBookmarkIsNotChanged()
{
GivenLogFilesInDirectory(files: 2);
var allFiles = LogFiles.ToArray();
var initialFile = LogFiles[0];
GivenPersistedBookmark(initialFile, 0);
GivenLogReader(initialFile, length: BatchPostingLimit, maxStreams: BatchPostingLimit);
GivenSendIsFailed();
WhenLogShipperIsCalled();
LogFiles.ShouldBe(allFiles, "Nothing shall be deleted.");
this.ShouldSatisfyAllConditions(
() => CurrentLogFileName.ShouldBe(initialFile),
() => CurrentLogFilePosition.ShouldBe(0),
() => SentBatches.ShouldBe(0),
() => SentRecords.ShouldBe(0),
() => FailedBatches.ShouldBe(1),
() => FailedRecords.ShouldBe(BatchPostingLimit)
);
}