public void Concat ()
{
string string1 = "string1";
string string2 = "string2";
string concat = "string1string2";
Assert.IsTrue (String.Concat (string1, string2) == concat);
Assert.AreEqual (string1, String.Concat (string1, null));
Assert.AreEqual (string1, String.Concat (null, string1));
Assert.AreEqual (string.Empty, String.Concat (null, null));
WeirdToString wts = new WeirdToString ();
Assert.AreEqual (string1, String.Concat (string1, wts));
Assert.AreEqual (string1, String.Concat (wts, string1));
Assert.AreEqual (string.Empty, String.Concat (wts, wts));
string [] allstr = new string []{ string1, null, string2, concat };
object [] allobj = new object []{ string1, null, string2, concat };
string astr = String.Concat (allstr);
Assert.AreEqual ("string1string2string1string2", astr);
string ostr = String.Concat (allobj);
Assert.AreEqual (astr, ostr);
}
public void TestConcat ()
{
string string1 = "string1";
string string2 = "string2";
string concat = "string1string2";
Assert (String.Concat (string1, string2) == concat);
AssertEquals (string1, String.Concat (string1, null));
AssertEquals (string1, String.Concat (null, string1));
AssertEquals ("", String.Concat (null, null));
WeirdToString wts = new WeirdToString ();
AssertEquals (string1, String.Concat (string1, wts));
AssertEquals (string1, String.Concat (wts, string1));
AssertEquals ("", String.Concat (wts, wts));
string [] allstr = new string []{ string1, null, string2, concat };
object [] allobj = new object []{ string1, null, string2, concat };
string astr = String.Concat (allstr);
AssertEquals ("string1string2string1string2", astr);
string ostr = String.Concat (allobj);
AssertEquals (astr, ostr);
}