System.Tests.StringTests.Concat_Strings_TestData C# (CSharp) Method

        public static IEnumerable<object[]> Concat_Strings_TestData()
        {
            yield return new object[] { new string[0], "" };

            yield return new object[] { new string[] { "1" }, "1" };
            yield return new object[] { new string[] { null }, "" };
            yield return new object[] { new string[] { "" }, "" };

            yield return new object[] { new string[] { "1", "2" }, "12" };
            yield return new object[] { new string[] { null, "1" }, "1" };
            yield return new object[] { new string[] { "", "1" }, "1" };
            yield return new object[] { new string[] { "1", null }, "1" };
            yield return new object[] { new string[] { "1", "" }, "1" };
            yield return new object[] { new string[] { null, null }, "" };
            yield return new object[] { new string[] { "", "" }, "" };

            yield return new object[] { new string[] { "1", "2", "3" }, "123" };
            yield return new object[] { new string[] { null, "1", "2" }, "12" };
            yield return new object[] { new string[] { "", "1", "2" }, "12" };
            yield return new object[] { new string[] { "1", null, "2" }, "12" };
            yield return new object[] { new string[] { "1", "", "2" }, "12" };
            yield return new object[] { new string[] { "1", "2", null }, "12" };
            yield return new object[] { new string[] { "1", "2", "" }, "12" };
            yield return new object[] { new string[] { null, "2", null }, "2" };
            yield return new object[] { new string[] { "", "2", "" }, "2" };
            yield return new object[] { new string[] { null, null, null }, "" };
            yield return new object[] { new string[] { "", "", "" }, "" };

            yield return new object[] { new string[] { "1", "2", "3", "4" }, "1234" };
            yield return new object[] { new string[] { null, "1", "2", "3" }, "123" };
            yield return new object[] { new string[] { "", "1", "2", "3" }, "123" };
            yield return new object[] { new string[] { "1", null, "2", "3" }, "123" };
            yield return new object[] { new string[] { "1", "", "2", "3" }, "123" };
            yield return new object[] { new string[] { "1", "2", null, "3" }, "123" };
            yield return new object[] { new string[] { "1", "2", "", "3" }, "123" };
            yield return new object[] { new string[] { "1", "2", "3", null }, "123" };
            yield return new object[] { new string[] { "1", "2", "3", "" }, "123" };
            yield return new object[] { new string[] { "1", null, null, null }, "1" };
            yield return new object[] { new string[] { "1", "", "", "" }, "1" };
            yield return new object[] { new string[] { null, "1", null, "2" }, "12" };
            yield return new object[] { new string[] { "", "1", "", "2" }, "12" };
            yield return new object[] { new string[] { null, null, null, null }, "" };
            yield return new object[] { new string[] { "", "", "", "" }, "" };

            yield return new object[] { new string[] { "1", "2", "3", "4", "5" }, "12345" };
            yield return new object[] { new string[] { null, "1", "2", "3", "4" }, "1234" };
            yield return new object[] { new string[] { "", "1", "2", "3", "4" }, "1234" };
            yield return new object[] { new string[] { "1", null, "2", "3", "4" }, "1234" };
            yield return new object[] { new string[] { "1", "", "2", "3", "4" }, "1234" };
            yield return new object[] { new string[] { "1", "2", null, "3", "4" }, "1234" };
            yield return new object[] { new string[] { "1", "2", "", "3", "4" }, "1234" };
            yield return new object[] { new string[] { "1", "2", "3", null, "4" }, "1234" };
            yield return new object[] { new string[] { "1", "2", "3", "", "4" }, "1234" };
            yield return new object[] { new string[] { "1", "2", "3", "4", null }, "1234" };
            yield return new object[] { new string[] { "1", "2", "3", "4", "" }, "1234" };
            yield return new object[] { new string[] { "1", null, "3", null, "5" }, "135" };
            yield return new object[] { new string[] { "1", "", "3", "", "5" }, "135" };
            yield return new object[] { new string[] { null, null, null, null, null }, "" };
            yield return new object[] { new string[] { "", "", "", "", "" }, "" };

            yield return new object[] { new string[] { "abcd", "efgh", "ijkl", "mnop", "qrst", "uvwx", "yz" }, "abcdefghijklmnopqrstuvwxyz" };
        }