public void EnsureEndsWith_WithSentenceStringAndUnknownWord_ExpectsConcatenationAtEnd() => Equal( SENTENCE + WORD, SENTENCE.EnsureEndsWith(WORD));
public void EnsureEndsWith_WithSentenceStringAndLastWord_ExpectsSentenceString() => Equal( SENTENCE, SENTENCE.EnsureEndsWith(WORD_LAST));
public void EnsureEndsWith_WithNullValue_Throws() => Throws <ArgumentNullException>(() => SENTENCE.EnsureEndsWith(NULL));