NUnit testing with TestCase

        [TestCase(new int[] { 1, 2, 3 })]
        [TestCase(new int[] { 0 })]
        [TestCase(new int[] {})]
        public void FetchCommandShouldReturnCopyOfData(int[] expectedData)
        {
            // Arrange
            this.database = new Database.Database(expectedData);

            // Act
             int[] resultArray  = database.Fetch();

            // Assert
            CollectionAssert.AreEqual(expectedData,resultArray);
        }