<PackageReference Include="NUnit" Version="4.4.0" />

NoItemConstraint

NoItemConstraint applies another constraint to each item in a collection, failing if any of them succeeds.
public NoItemConstraint(IConstraint itemConstraint)

Construct a SomeItemsConstraint on top of an existing constraint

public ConstraintResult ApplyToEnumerable<TActual, TItem>(TActual actual, IEnumerable<TItem> enumerable)

Apply the item constraint to each item in the collection, failing if any item fails.