public void EqualsReturnsFalseForDifferentTypeArgument()
{
// arrange
var originalVector = SparseVectorHelper.GenerateRandomVector(1000, 0.7, () => SparseVectorHelper.RandomInInterval(-100, 100, 2));
var sv = new SparseVector <double>(originalVector);
// act
var falseResult1 = sv.Equals(string.Empty);
// assert
Assert.IsFalse(falseResult1);
}
public void EnumeratorReturnsOnlyNonZeroValuePairsOrderedByIndexAscending()
{
// arrange
var originalVector = SparseVectorHelper.GenerateRandomVector(1000, 0.7, () => SparseVectorHelper.RandomInInterval(-100, 100, 2));
var sv = new SparseVector <double>(originalVector);
var nonZeroValuesPairs = originalVector.Where(pair => pair.Value != 0.0).OrderBy(pair => pair.Key).ToArray();
// act
// assert
Assert.IsTrue(sv.SequenceEqual(nonZeroValuesPairs));
}
public void IndexedPropertyGetAccessorReturnsWhatWasSavedThroughConstructor()
{
// arrange
var originalVector = SparseVectorHelper.GenerateRandomVector(1000, 0.7, () => SparseVectorHelper.RandomInInterval(-100, 100, 2));
// act
var sv = new SparseVector <double>(originalVector);
// assert
foreach (var element in originalVector)
{
Assert.AreEqual(element.Value, sv[element.Key]);
}
}
public void GetHashCodeReturnsSameHashCodeForEqualSparseVectors()
{
// arrange
var originalVector = SparseVectorHelper.GenerateRandomVector(1000, 0.7, () => SparseVectorHelper.RandomInInterval(-100, 100, 2));
var originalVectorCopy = originalVector.ToArray();
var sv1 = new SparseVector <double>(originalVector);
var sv2 = new SparseVector <double>(originalVectorCopy);
// act
var hc1 = sv1.GetHashCode();
var hc2 = sv2.GetHashCode();
// assert
Assert.AreEqual(hc1, hc2);
}
public void EqualsReturnsTrueForSameReferenceObjects()
{
// arrange
var originalVector = SparseVectorHelper.GenerateRandomVector(1000, 0.7, () => SparseVectorHelper.RandomInInterval(-100, 100, 2));
var sv1 = new SparseVector <double>(originalVector);
SparseVector <double> sv2 = sv1;
// act
var trueResult1 = sv1.Equals(sv2);
var trueResult2 = sv1.Equals((object)sv2);
// assert
Assert.IsTrue(trueResult1);
Assert.IsTrue(trueResult2);
}
public void EqualsReturnsFalseForNullArgument()
{
// arrange
var originalVector = SparseVectorHelper.GenerateRandomVector(1000, 0.7, () => SparseVectorHelper.RandomInInterval(-100, 100, 2));
var sv1 = new SparseVector <double>(originalVector);
SparseVector <double> sv2 = null;
// act
var falseResult1 = sv1.Equals(sv2);
var falseResult2 = sv1.Equals((object)sv2);
// assert
Assert.IsFalse(falseResult1);
Assert.IsFalse(falseResult2);
}
public void EqualOperatorReturnsTrueForEqualSparseVectors()
{
// arrange
var originalVector = SparseVectorHelper.GenerateRandomVector(1000, 0.7, () => SparseVectorHelper.RandomInInterval(-100, 100, 2));
var originalVectorCopy = originalVector.ToArray();
var sv1 = new SparseVector <double>(originalVector);
var sv2 = new SparseVector <double>(originalVectorCopy);
// act
var trueResult = sv1 == sv2;
var falseResult = sv1 != sv2;
// assert
Assert.IsTrue(trueResult);
Assert.IsFalse(falseResult);
}
public void NonZeroValuesCountReturnsOnlyNonZeroElementsCount()
{
// arrange
var originalVector = SparseVectorHelper.GenerateRandomVector(1000, 0.7, () => SparseVectorHelper.RandomInInterval(-100, 100, 2));
var nonZeroElementsCount = originalVector.Count(arg => arg.Value != 0.0);
var sv = new SparseVector <double>();
// act
foreach (var element in originalVector)
{
sv[element.Key] = element.Value;
}
// assert
Assert.AreEqual(nonZeroElementsCount, sv.NonZeroValuesCount);
}