public void Pattern_ProvideIntInputLessThanOne_ReturnsEmptyString()
        {
            var    pc             = new PatternCompletion();
            string expectedResult = string.Empty;

            Assert.AreEqual(expectedResult, pc.Pattern(0));
        }
        public void Pattern_ProvideIntInput_ReturnsValidPattern()
        {
            var    pc             = new PatternCompletion();
            string expectedResult = "1\r\n22\r\n333\r\n4444\r\n55555\r\n";

            Assert.AreEqual(expectedResult, pc.Pattern(5));
        }