CollectionSubsetConstraint - jnm2/nunit-docs-wiki GitHub Wiki

CollectionSubsetConstraint tests that one IEnumerable is a subset of another. If the actual value passed does not implement IEnumerable, an exception is thrown.

CollectionSubsetConstraint(IEnumerable)

Is.SubsetOf(IEnumerable)

int[] iarray = new int[] { 1, 3 };
Assert.That(iarray, Is.SubsetOf(new int[] { 1, 2, 3 }));