better-unit-test-in-c#-article-Box-Equals.cs

better-unit-test-in-c#-article-Box-Equals.cs.cs

public sealed record Box
{
    ...

    public bool Equals(Box? other)
    {
      if (other == null)
      {
          return false;
      }

      return IsOpen.Equals(other.IsOpen) &&
        Size == other.Size &&
        thingsInside.SequenceEqual(other.thingsInside);
    }

    public override int GetHashCode()
    {
      unchecked
      {
        int hash = 13;
        hash = (hash * 7) + IsOpen.GetHashCode();
        hash = (hash * 7) + Size.GetHashCode();
        hash = thingsInside.Aggregate(hash, (acc, o) => (acc * 7) + o.GetHashCode());
        return hash;
      }
    }
 }