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 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 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();
}