public void IntexOfOpeningTest()
{
Tag T = new Tag("bu");
string s = "abc<bu>d";
Assert.AreEqual<int>(7, T.IndexOfOpening(s));
}
public void IndexOfClosingTest()
{
Tag T = new Tag("bu");
string s = "abc</bu>d";
Assert.AreEqual<int>(2, T.IndexOfClosing(s));
}
