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

        public static IEnumerable<object[]> Join_ObjectArray_TestData()
        {
            yield return new object[] { "$$", new object[] { }, "" };
            yield return new object[] { "$$", new object[] { new ObjectWithNullToString() }, "" };
            yield return new object[] { "$$", new object[] { "Foo" }, "Foo" };
            yield return new object[] { "$$", new object[] { "Foo", "Bar", "Baz" }, "Foo$$Bar$$Baz" };
            yield return new object[] { null, new object[] { "Foo", "Bar", "Baz" }, "FooBarBaz" };
            yield return new object[] { "$$", new object[] { "Foo", null, "Baz" }, "Foo$$$$Baz" };

            // Join does nothing if array[0] is null
            yield return new object[] { "$$", new object[] { null, "Bar", "Baz" }, "" };

            // Join should ignore objects that have a null ToString() value
            yield return new object[] { "|", new object[] { new ObjectWithNullToString(), "Foo", new ObjectWithNullToString(), "Bar", new ObjectWithNullToString() }, "|Foo||Bar|" };
        }