public void FormatCollectionTest()
{
int[] i0 = new int[] { 1, 3, 5 };
int[] i1 = new int[] { };
int[] i2 = null;
string s0 = "(1,3,5)";
string s1 = "()";
string s2 = "()";
Assert.Equal(s0, TextFormatter.FormatCollection(i0));
Assert.Equal(s1, TextFormatter.FormatCollection(i1));
Assert.Equal(s2, TextFormatter.FormatCollection(i2));
}