public void EmptyCharsTest()
{
var alphabet = new Alphabet(new char[] { });
}
public void ContainsFalseTest()
{
var alphabet = new Alphabet("ab");
Assert.IsFalse(alphabet.Contains('c'));
}
public void ContainsTrueTest()
{
var alphabet = new Alphabet("ab");
Assert.IsTrue(alphabet.Contains('a'));
}
public void NullCharsTest()
{
var alphabet = new Alphabet(null);
}
/// <summary>
/// Creates a new alphabet which is a union of two alphabets.
/// </summary>
/// <param name="a1">The first alphabet.</param>
/// <param name="a2">The second alphabet.</param>
/// <returns>A new alphabet which is a union of two alphabets.</returns>
/// <remarks>This operation is not commutative.</remarks>
public static Alphabet Union(Alphabet a1, Alphabet a2)
=> new Alphabet(a1.indices.Keys.Concat(a2.indices.Keys))
{
Name = $"{a1.Name} + {a2.Name}"
};
/// <summary> /// Compates the equality of this alphabet to the other alphabet. /// </summary> /// <param name="other">The alphabet to compare to.</param> /// <returns> /// <c>true</c>, if this alphabet equals the other. /// Otherwise, <c>false</c>. /// </returns> public bool Equals(Alphabet other) => other != null && this.indices.Keys.SequenceEqual(other.indices.Keys);