public void FlattenFullIteratedDisposesInnerSequences()
{
using (var inner1 = TestingSequence.Of(4, 5))
using (var inner2 = TestingSequence.Of(true, false))
using (var inner3 = TestingSequence.Of <object>(6, inner2, 7))
{
var source = new object[]
{
inner1,
inner3,
};
var expectations = new object[]
{
4,
5,
6,
true,
false,
7,
};
using (var test = source.AsTestingSequence())
{
Assert.That(test.Flatten(), Is.EquivalentTo(expectations));
}
}
}
public void TakeLastDisposesSequenceEnumerator()
{
using (var seq = TestingSequence.Of(1, 2, 3))
{
seq.TakeLast(1).Consume();
}
}
public void ZipDisposesInnerSequencesCaseGetEnumeratorThrows()
{
using var s1 = TestingSequence.Of(1, 2);
Assert.Throws <InvalidOperationException>(() =>
s1.EquiZip(new BreakingSequence <int>(), Tuple.Create).Consume());
}
public void TestInterleaveDoNotCallGetEnumeratorEagerly()
{
var sequenceA = TestingSequence.Of(1);
var sequenceB = new BreakingSequence <int>();
sequenceA.Interleave(sequenceB).Take(1).Consume();
}
public void StartsWithDisposesBothSequenceEnumerators()
{
using var first = TestingSequence.Of(1, 2, 3);
using var second = TestingSequence.Of(1);
first.StartsWith(second);
}
public void BothSequencesDisposedWithUnequalLengthsAndShorterFirst()
{
using var longer = TestingSequence.Of(1, 2, 3);
using var shorter = TestingSequence.Of(1, 2);
shorter.ZipShortest(longer, (x, y) => x + y).Consume();
}
public void CompareCountDisposesSequenceEnumerators()
{
using var seq1 = TestingSequence.Of <int>();
using var seq2 = TestingSequence.Of <int>();
Assert.AreEqual(0, seq1.CompareCount(seq2));
}
public void TestInterleaveDisposesOnError()
{
using (var sequenceA = TestingSequence.Of <int>())
{
Assert.Throws <InvalidOperationException>(() => // Expected and thrown by BreakingSequence
sequenceA.Interleave(new BreakingSequence <int>()).Consume());
}
}
public void CompareCountDisposesSecondEnumerator()
{
var collection = new BreakingCollection <int>(0);
using var seq = TestingSequence.Of <int>();
Assert.AreEqual(0, collection.CompareCount(seq));
}
public void BothSequencesDisposedWithUnequalLengthsAndLongerFirst()
{
using (var longer = TestingSequence.Of(1, 2, 3))
using (var shorter = TestingSequence.Of(1, 2))
{
longer.ZipLongest(shorter, (x, y) => x + y).Consume();
}
}
public void TestInterleaveDisposesOnErrorAtMoveNext()
{
using var sequenceA = TestingSequence.Of <int>();
using var sequenceB = MoreEnumerable.From <int>(() => throw new TestException()).AsTestingSequence();
// Expected and thrown by sequenceB
Assert.Throws <TestException>(() => sequenceA.Interleave(sequenceB).Consume());
}
public void TestInterleaveDisposesOnErrorAtGetEnumerator()
{
using var sequenceA = TestingSequence.Of <int>();
var sequenceB = new BreakingSequence <int>();
// Expected and thrown by BreakingSequence
Assert.Throws <InvalidOperationException>(() => sequenceA.Interleave(sequenceB).Consume());
}
public void EndsWithDisposesBothSequenceEnumerators()
{
using (var first = TestingSequence.Of(1, 2, 3))
using (var second = TestingSequence.Of(1))
{
first.EndsWith(second);
}
}
public void TestSortedMergeDisposesOnError()
{
using var sequenceA = TestingSequence.Of <int>();
// Expected and thrown by BreakingSequence
Assert.Throws <InvalidOperationException>(() =>
sequenceA.SortedMerge(OrderByDirection.Ascending, new BreakingSequence <int>()).Consume());
}
public void BothSequencesDisposedWithUnequalLengthsAndShorterFirst()
{
using var longer = TestingSequence.Of(1, 2, 3);
using var shorter = TestingSequence.Of(1, 2);
// Yes, this will throw... but then we should still have disposed both sequences
Assert.Throws <InvalidOperationException>(() =>
shorter.EquiZip(longer, (x, y) => x + y).Consume());
}
public void CompareCountDisposesFirstEnumerator()
{
var collection = new BreakingCollection <int>(0);
using (var seq = TestingSequence.Of <int>())
{
Assert.AreEqual(0, seq.CompareCount(collection));
}
}
public void TransposeWithOneNullRow()
{
using var seq1 = TestingSequence.Of(10, 11);
using var seq2 = TestingSequence.Of <int>();
using var seq3 = TestingSequence.Of(30, 31, 32);
using var matrix = TestingSequence.Of(seq1, seq2, seq3, null);
Assert.Throws <NullReferenceException>(() =>
matrix.Transpose().FirstOrDefault());
}
public void MoveNextIsNotCalledUnnecessarily()
{
using var s1 = TestingSequence.Of(1, 2);
using var s2 = TestingSequence.Of(1, 2, 3);
using var s3 = MoreEnumerable.From(() => 1,
() => 2,
() => throw new TestException())
.AsTestingSequence();
Assert.Throws <InvalidOperationException>(() =>
s1.EquiZip(s2, s3, (x, y, z) => x + y + z).Consume());
}
public void FlattenInterruptedIterationDisposesInnerSequences()
{
using var inner1 = TestingSequence.Of(4, 5);
using var inner2 = MoreEnumerable.From(() => true,
() => false,
() => throw new TestException())
.AsTestingSequence();
using var inner3 = TestingSequence.Of <object>(6, inner2, 7);
using var source = TestingSequence.Of <object>(inner1, inner3);
Assert.Throws <TestException>(() =>
source.Flatten().Consume());
}
public void MoveNextIsNotCalledUnnecessarilyWhenFirstIsShorter()
{
using (var s1 = TestingSequence.Of(1, 2))
using (var s2 = MoreEnumerable.From(() => 4,
() => 5,
() => throw new TestException())
.AsTestingSequence())
{
var zipped = s1.ZipShortest(s2, Tuple.Create);
Assert.That(zipped, Is.Not.Null);
zipped.AssertSequenceEqual((1, 4), (2, 5));
}
}
public void ZipShortestNotIterateUnnecessaryElements()
{
using (var s1 = MoreEnumerable.From(() => 4,
() => 5,
() => 6,
() => throw new TestException())
.AsTestingSequence())
using (var s2 = TestingSequence.Of(1, 2))
{
var zipped = s1.ZipShortest(s2, Tuple.Create);
Assert.That(zipped, Is.Not.Null);
zipped.AssertSequenceEqual((4, 1), (5, 2));
}
}
public void TestSortedMergeDisposesOnError()
{
using (var sequenceA = TestingSequence.Of <int>())
{
try
{
sequenceA.SortedMerge(OrderByDirection.Ascending, new BreakingSequence <int>()).ToArray();
Assert.Fail("{0} was expected", typeof(InvalidOperationException));
}
catch (InvalidOperationException)
{
// Expected and thrown by BreakingSequence
}
}
}
public void TestInterleaveDisposesOnError()
{
using (var sequenceA = TestingSequence.Of <int>())
{
try
{
sequenceA.Interleave(new BreakingSequence <int>()).ToArray();
Assert.Fail("{0} was expected", typeof(InvalidOperationException));
}
catch (InvalidOperationException)
{
// Expected and thrown by BreakingSequence
}
}
}
public void BothSequencesDisposedWithUnequalLengthsAndShorterFirst()
{
using (var longer = TestingSequence.Of(1, 2, 3))
using (var shorter = TestingSequence.Of(1, 2))
{
// Yes, this will throw... but then we should still have disposed both sequences
try
{
shorter.EquiZip(longer, (x, y) => x + y).Consume();
}
catch (InvalidOperationException)
{
// Expected
}
}
}
public void ZipLongestDisposeSequencesEagerly()
{
var shorter = TestingSequence.Of(1, 2, 3);
var longer = MoreEnumerable.Generate(1, x => x + 1);
var zipped = shorter.ZipLongest(longer, Tuple.Create);
var count = 0;
foreach (var _ in zipped.Take(10))
{
if (++count == 4)
{
((IDisposable)shorter).Dispose();
}
}
}
public void TransposeWithRowsOfSameLength()
{
var expectations = new[]
{
new [] { 10, 20, 30 },
new [] { 11, 21, 31 },
new [] { 12, 22, 32 },
new [] { 13, 23, 33 },
};
using var row1 = TestingSequence.Of(10, 11, 12, 13);
using var row2 = TestingSequence.Of(20, 21, 22, 23);
using var row3 = TestingSequence.Of(30, 31, 32, 33);
using var matrix = TestingSequence.Of(row1, row2, row3);
AssertMatrix(expectations, matrix.Transpose());
}
public void TransposeWithRowsOfDifferentLengths()
{
var expectations = new[]
{
new[] { 10, 20, 30 },
new[] { 11, 31 },
new[] { 32 }
};
using var row1 = TestingSequence.Of(10, 11);
using var row2 = TestingSequence.Of(20);
using var row3 = TestingSequence.Of <int>();
using var row4 = TestingSequence.Of(30, 31, 32);
using var matrix = TestingSequence.Of(row1, row2, row3, row4);
AssertMatrix(expectations, matrix.Transpose());
}
public void FlattenFullIteratedDisposesInnerSequences()
{
var expectations = new object[]
{
4,
5,
6,
true,
false,
7,
};
using var inner1 = TestingSequence.Of(4, 5);
using var inner2 = TestingSequence.Of(true, false);
using var inner3 = TestingSequence.Of <object>(6, inner2, 7);
using var source = TestingSequence.Of <object>(inner1, inner3);
Assert.That(source.Flatten(), Is.EqualTo(expectations));
}
public void FlattenInterruptedIterationDisposesInnerSequences()
{
using (var inner1 = TestingSequence.Of(4, 5))
using (var inner2 = MoreEnumerable.From(() => true,
() => false,
() => throw new InvalidOperationException())
.AsTestingSequence())
using (var inner3 = TestingSequence.Of <object>(6, inner2, 7))
{
var source = new object[]
{
inner1,
inner3,
};
using (var test = source.AsTestingSequence())
{
Assert.Throws <InvalidOperationException>(() =>
test.Flatten().Consume());
}
}
}
