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].As <string>().Should().Be($"record{i}:key0");
enumerator = recordSet.Records().GetEnumerator();
enumerator.MoveNext().Should().BeTrue();
// peeked record = current
enumerator.Current[0].As <string>().Should().Be($"record{i}:key0");
}
record = recordSet.Peek();
record.Should().BeNull();
enumerator = recordSet.Records().GetEnumerator();
enumerator.MoveNext().Should().BeFalse();
enumerator.Current.Should().BeNull();
}
public 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 void ShouldReturnRecordsInOrder()
{
var records = RecordCreator.CreateRecords(5);
var recordSet = new ListBasedRecordSet(records);
int i = 0;
foreach (var record in recordSet.Records())
{
record[0].As <string>().Should().Be($"record{i++}:key0");
}
i.Should().Be(5);
}
public void ShouldGetTheFirstRecordAndMoveToNextPosition()
{
var records = RecordCreator.CreateRecords(5);
var recordSet = new ListBasedRecordSet(records);
var recordStream = recordSet.Records();
var record = recordStream.First();
record[0].As <string>().Should().Be("record0:key0");
record = recordStream.First();
record[0].As <string>().Should().Be("record1:key0");
}
public void ShouldAlwaysAdvanceRecordPosition()
{
var recordSet = new ListBasedRecordSet(RecordCreator.CreateRecords(5));
var recordStream = recordSet.Records();
var enumerable = recordStream.Take(1);
var records = recordStream.Take(2).ToList();
records[0][0].As <string>().Should().Be("record0:key0");
records[1][0].As <string>().Should().Be("record1:key0");
records = enumerable.ToList();
records[0][0].As <string>().Should().Be("record2:key0");
}
public void ShouldReturnNextRecordWithoutMovingCurrentRecord()
{
var records = RecordCreator.CreateRecords(5);
var recordSet = new ListBasedRecordSet(records);
var record = recordSet.Peek();
record.Should().NotBeNull();
record[0].As <string>().Should().Be("record0:key0");
// not moving further no matter how many times are called
record = recordSet.Peek();
record.Should().NotBeNull();
record[0].As <string>().Should().Be("record0:key0");
}
public void ShouldReturnRecordsAddedLatter()
{
var keys = RecordCreator.CreateKeys();
var records = RecordCreator.CreateRecords(5, keys);
var recordSet = new ListBasedRecordSet(records);
// I add a new record after RecordSet is created
var newRecord = new Record(keys.ToArray(), new object[] { "record5:key0" });
records.Add(newRecord);
int i = 0;
foreach (var record in recordSet.Records())
{
record[0].As <string>().Should().Be($"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].As <string>().Should().Be("record4:key0");
var moveNext = recordSet.Records().GetEnumerator().MoveNext();
moveNext.Should().BeTrue();
record.Should().NotBeNull();
record[0].As <string>().Should().Be("record4:key0");
record = recordSet.Peek();
record.Should().BeNull();
}