public void ShouldBeTheSameWithEnumeratorMoveNextCurrent()
{
var records = RecordCreator.CreateRecords(2);
var recordSet = new ListBasedRecordSet(records);
IRecord record;
IEnumerator <IRecord> enumerator;
for (int i = 0; i < 2; i++)
{
record = recordSet.Peek();
record.Should().NotBeNull();
record[0].ValueAs <string>().Should().Be($"record{i}:key0");
enumerator = recordSet.Records().GetEnumerator();
enumerator.MoveNext().Should().BeTrue();
// peeked record = current
enumerator.Current[0].ValueAs <string>().Should().Be($"record{i}:key0");
}
record = recordSet.Peek();
record.Should().BeNull();
enumerator = recordSet.Records().GetEnumerator();
enumerator.MoveNext().Should().BeFalse();
enumerator.Current.Should().BeNull();
}
public async Task ShouldBeTheSameWithEnumeratorMoveNextCurrent()
{
var records = RecordCreator.CreateRecords(2);
var cursor = new ListBasedRecordCursor(new[] { "key0" }, () => records);
IRecord record;
bool hasNext;
for (int i = 0; i < 2; i++)
{
record = await cursor.PeekAsync();
record.Should().NotBeNull();
record[0].As <string>().Should().Be($"record{i}:key0");
hasNext = await cursor.FetchAsync();
hasNext.Should().BeTrue();
// peeked record = current
cursor.Current[0].As <string>().Should().Be($"record{i}:key0");
}
record = await cursor.PeekAsync();
record.Should().BeNull();
hasNext = await cursor.FetchAsync();
hasNext.Should().BeFalse();
}
public async Task ShouldReturnNullIfAtEnd()
{
var records = RecordCreator.CreateRecords(5);
var cursor = new ListBasedRecordCursor(new[] { "key0" }, () => records);
// [0, 1, 2, 3]
await cursor.FetchAsync();
await cursor.FetchAsync();
await cursor.FetchAsync();
await cursor.FetchAsync();
var record = await cursor.PeekAsync();
record.Should().NotBeNull();
record[0].As <string>().Should().Be("record4:key0");
var moveNext = await cursor.FetchAsync();
moveNext.Should().BeTrue();
record.Should().NotBeNull();
record[0].As <string>().Should().Be("record4:key0");
record = await cursor.PeekAsync();
record.Should().BeNull();
}
public static StatementResult CreateResult(int keySize, int recordSize = 1,
Func<IResultSummary> getSummaryFunc = null)
{
var keys = RecordCreator.CreateKeys(keySize);
var records = RecordCreator.CreateRecords(recordSize, keys);
return new StatementResult(keys, new ListBasedRecordSet(records), getSummaryFunc);
}
public void EnumeratorResetShouldDoNothing()
{
var records = RecordCreator.CreateRecords(5);
var recordSet = new ListBasedRecordSet(records);
var ex = Xunit.Record.Exception(() => recordSet.Records().GetEnumerator().Reset());
ex.Should().BeOfType <NotSupportedException>();
}
public static StatementResultCursor CreateResultReader(int keySize, int recordSize = 1,
Func <Task <IResultSummary> > getSummaryFunc = null)
{
var keys = RecordCreator.CreateKeys(keySize);
var records = RecordCreator.CreateRecords(recordSize, keys);
var recordsEnum = records.GetEnumerator();
return(new StatementResultCursor(keys, () => NextRecordFromEnum(recordsEnum), getSummaryFunc));
}
public static InternalResult CreateResult(int keySize, int recordSize = 1,
Func <IResultSummary> getSummaryFunc = null)
{
var keys = RecordCreator.CreateKeys(keySize);
var records = RecordCreator.CreateRecords(recordSize, keys);
return(new InternalResult(new ListBasedRecordCursor(keys, () => records, getSummaryFunc),
new BlockingExecutor()));
}
public static StatementResultCursor CreateResultReader(int keySize, int recordSize = 1,
Func <Task <IResultSummary> > getSummaryFunc = null,
CancellationTokenSource cancellationTokenSource = null)
{
var keys = RecordCreator.CreateKeys(keySize);
var records = RecordCreator.CreateRecords(recordSize, keys);
var recordsEnum = records.GetEnumerator();
return(new StatementResultCursor(() => Task.FromResult(keys.ToArray()),
() => NextRecordFromEnum(recordsEnum), getSummaryFunc, cancellationTokenSource));
}
public void ShouldReturnRecordsInOrder()
{
var records = RecordCreator.CreateRecords(5);
var recordSet = new ListBasedRecordSet(records);
int i = 0;
foreach (var record in recordSet.Records())
{
record[0].ValueAs <string>().Should().Be($"record{i++}:key0");
}
i.Should().Be(5);
}
public void ShouldGetTheFirstRecordAndMoveToNextPosition()
{
var records = RecordCreator.CreateRecords(5);
var recordSet = new ListBasedRecordSet(records);
var recordStream = recordSet.Records();
var record = recordStream.First();
record[0].ValueAs <string>().Should().Be("record0:key0");
record = recordStream.First();
record[0].ValueAs <string>().Should().Be("record1:key0");
}
public async Task ShouldReturnRecordsInOrder()
{
var records = RecordCreator.CreateRecords(5);
var cursor = new ListBasedRecordCursor(new[] { "key1" }, () => records);
int i = 0;
while (await cursor.FetchAsync())
{
cursor.Current[0].As <string>().Should().Be($"record{i++}:key0");
}
i.Should().Be(5);
}
public void ShouldAlwaysAdvanceRecordPosition()
{
var recordSet = new ListBasedRecordSet(RecordCreator.CreateRecords(5));
var recordStream = recordSet.Records();
var enumerable = recordStream.Take(1);
var records = recordStream.Take(2).ToList();
records[0][0].ValueAs <string>().Should().Be("record0:key0");
records[1][0].ValueAs <string>().Should().Be("record1:key0");
records = enumerable.ToList();
records[0][0].ValueAs <string>().Should().Be("record2:key0");
}
public void ShouldReturnNextRecordWithoutMovingCurrentRecord()
{
var records = RecordCreator.CreateRecords(5);
var recordSet = new ListBasedRecordSet(records);
var record = recordSet.Peek();
record.Should().NotBeNull();
record[0].ValueAs <string>().Should().Be("record0:key0");
// not moving further no matter how many times are called
record = recordSet.Peek();
record.Should().NotBeNull();
record[0].ValueAs <string>().Should().Be("record0:key0");
}
public async Task ShouldReturnNextRecordWithoutMovingCurrentRecord()
{
var records = RecordCreator.CreateRecords(5);
var cursor = new ListBasedRecordCursor(new[] { "key1" }, () => records);
var record = await cursor.PeekAsync();
record.Should().NotBeNull();
record[0].As <string>().Should().Be("record0:key0");
// not moving further no matter how many times are called
record = await cursor.PeekAsync();
record.Should().NotBeNull();
record[0].As <string>().Should().Be("record0:key0");
}
public static StatementResultCursor CreateResultCursor(int keySize, int recordSize = 1,
Func <Task <IResultSummary> > getSummaryFunc = null,
CancellationTokenSource cancellationTokenSource = null)
{
var keys = RecordCreator.CreateKeys(keySize);
var records = RecordCreator.CreateRecords(recordSize, keys);
var recordsEnum = records.GetEnumerator();
var stream = new Mock <IResultStream>();
stream.Setup(x => x.GetKeysAsync()).Returns(() => Task.FromResult(keys.ToArray()));
stream.Setup(x => x.NextRecordAsync()).Returns(() => NextRecordFromEnum(recordsEnum));
stream.Setup(x => x.SummaryAsync()).Returns(getSummaryFunc);
stream.Setup(x => x.Cancel()).Callback(() => cancellationTokenSource?.Cancel());
return(new StatementResultCursor(stream.Object));
}
public void ShouldReturnRecordsAddedLatter()
{
var keys = RecordCreator.CreateKeys();
var records = RecordCreator.CreateRecords(5, keys);
var recordSet = new ListBasedRecordSet(records);
// I add a new record after RecordSet is created
var newRecord = new Record(keys, new object[] { "record5:key0" });
records.Add(newRecord);
int i = 0;
foreach (var record in recordSet.Records())
{
record[0].ValueAs <string>().Should().Be($"record{i++}:key0");
}
i.Should().Be(6);
}
public async Task ShouldReturnRecordsAddedLatter()
{
var keys = RecordCreator.CreateKeys();
var records = RecordCreator.CreateRecords(5, keys);
var cursor = new ListBasedRecordCursor(keys, () => records);
// I add a new record after RecordSet is created
var newRecord = new Record(keys, new object[] { "record5:key0" });
records.Add(newRecord);
int i = 0;
while (await cursor.FetchAsync())
{
cursor.Current[0].As <string>().Should().Be($"record{i++}:key0");
}
i.Should().Be(6);
}
public void ShouldReturnNullIfAtEnd()
{
var records = RecordCreator.CreateRecords(5);
var recordSet = new ListBasedRecordSet(records);
recordSet.Records().Take(4).ToList(); // [0, 1, 2, 3]
var record = recordSet.Peek();
record.Should().NotBeNull();
record[0].ValueAs <string>().Should().Be("record4:key0");
var moveNext = recordSet.Records().GetEnumerator().MoveNext();
moveNext.Should().BeTrue();
record.Should().NotBeNull();
record[0].ValueAs <string>().Should().Be("record4:key0");
record = recordSet.Peek();
record.Should().BeNull();
}