+ [Test, ExpectedException (typeof (ArgumentNullException))]
+ public void Split_InvalidCount ()
+ {
+ Regex.Split (null, "^.*$", -4);
+ }
+
+ [Test, ExpectedException (typeof (ArgumentNullException))]
+ public void Split_InvalidCount ()
+ {
+ Regex.Split (null, "^.*$", 1, -4);
+ }
+
+ [Test, ExpectedException (typeof (ArgumentNullException))]
+ public void Escape_Null ()
+ {
+ Regex.Escape (null);
+ }
+
+ [Test, ExpectedException (typeof (ArgumentNullException))]
+ public void Unescape_Null ()
+ {
+ Regex.Unescape (null);
+ }
+