public void CalculateIndexOfMillionTests() { // Arrange // Act var secondWord = converterHelper.CalculateIndexOfMillion(new string[] { "one", "million" }); var notFound = converterHelper.CalculateIndexOfMillion(new string[] { "one", "hundred", "thousand" }); // Assert Assert.AreEqual(1, secondWord); Assert.AreEqual(-1, notFound); }