public void Iterators_Concatenation_ForwardsProperly()
{
var inputs = new[]
{
new MockedIterator(new object[] { 1, 2 }),
new MockedIterator(new object[] { 3, 4 }),
new MockedIterator(new object[] { 5, 6 })
};
var entries = new[]
{
ImmutableArray.Create(new RowBufferEntry(inputs[0].RowBuffer, 0)),
ImmutableArray.Create(new RowBufferEntry(inputs[1].RowBuffer, 0)),
ImmutableArray.Create(new RowBufferEntry(inputs[2].RowBuffer, 0))
};
var expected = new object[] { 1, 2, 3, 4, 5, 6 };
using (var iterator = new ConcatenationIterator(inputs, entries))
{
for (var i = 0; i < 2; i++)
{
AssertProduces(iterator, expected);
}
}
foreach (var input in inputs)
{
Assert.Equal(2, input.TotalOpenCount);
Assert.Equal(4, input.TotalReadCount);
Assert.Equal(1, input.DisposalCount);
}
}
public virtual void TestIterator()
{
ICollection <string> c1 = Collections.Singleton("a");
ICollection <string> c2 = Java.Util.Collections.Singleton("b");
IEnumerator <string> i = new ConcatenationIterator <string>(c1.GetEnumerator(), c2.GetEnumerator());
NUnit.Framework.Assert.AreEqual("a", i.Current);
NUnit.Framework.Assert.AreEqual("b", i.Current);
NUnit.Framework.Assert.IsFalse(i.MoveNext());
}
public void Iterators_Concatenation_ReturnsEmpty_IfAllEmpty()
{
var inputs = new[]
{
new MockedIterator(new object[0]),
new MockedIterator(new object[0])
};
var entries = inputs.Select(i => ImmutableArray <RowBufferEntry> .Empty);
using (var iterator = new ConcatenationIterator(inputs, entries))
{
AssertEmpty(iterator);
}
}
public void Iterators_Concatenation_SkipsEmpty()
{
var inputs = new[]
{
new MockedIterator(new object[0]),
new MockedIterator(new object[] { 5, 6 })
};
var expected = new object[] { 5, 6 };
var entries = inputs.Select(i => ImmutableArray.Create(new RowBufferEntry(i.RowBuffer, 0)));
using (var iterator = new ConcatenationIterator(inputs, entries))
{
AssertProduces(iterator, expected);
}
}
