public void Test_GenerateSubsets_Simple_Case()
{
//Given
int[] array = { 1, 2 };
//When
var subSets = NumberOperations.GenerateSubsets(array, 1);
//Then
Assert.Equal(new[] { new int[] { 1 } }, subSets);
}
public void Test_GenerateSubsets_No_SubSet_Should_Be_Found()
{
//Given
int[] array = { 5, 10 };
//When
var subSets = NumberOperations.GenerateSubsets(array, 3);
//Then
Assert.Empty(subSets);
}
public void Test_GenerateSubsets_Longer_Collection()
{
//Given
int[] array = { 1, 2, 3, 5, 4 };
//When
IEnumerable <IEnumerable <int> > enumerable = NumberOperations.GenerateSubsets(array, 4);
//Then
Assert.Equal(new[]
{ new int[] { 1, 2 }, new int[] { 1 },
new int[] { 2 }, new int[] { 3 }, new int[] { 4 } }
, enumerable);
}