C#: Add type locations test.

Author: michaelnebel

csharp/ql/test/library-tests/locations/locations.expected

@@ -50,3 +50,11 @@ accessor_location
 | B.cs:3:14:3:14 | B | B.cs:10:9:10:11 | set_Item | B.cs:10:9:10:11 | B.cs:10:9:10:11 |
 | B.cs:3:14:3:14 | B | B.cs:15:9:15:11 | add_Event | B.cs:15:9:15:11 | B.cs:15:9:15:11 |
 | B.cs:3:14:3:14 | B | B.cs:16:9:16:14 | remove_Event | B.cs:16:9:16:14 | B.cs:16:9:16:14 |
+type_location
+| A.cs:3:23:3:26 | A<Int32> | A.cs:3:23:3:26 | A.cs:3:23:3:26 |
+| A.cs:3:23:3:26 | A<String> | A.cs:3:23:3:26 | A.cs:3:23:3:26 |
+| A.cs:3:23:3:26 | A`1 | A.cs:3:23:3:26 | A.cs:3:23:3:26 |
+| A.cs:3:25:3:25 | T | A.cs:3:25:3:25 | A.cs:3:25:3:25 |
+| A.cs:12:14:12:15 | A2 | A.cs:12:14:12:15 | A.cs:12:14:12:15 |
+| B.cs:3:14:3:14 | B | B.cs:3:14:3:14 | B.cs:3:14:3:14 |
+| C.cs:3:7:3:7 | C | C.cs:3:7:3:7 | C.cs:3:7:3:7 |

csharp/ql/test/library-tests/locations/locations.ql

@@ -12,3 +12,7 @@ query predicate accessor_location(Type t, Accessor a, SourceLocation l) {
   l = a.getLocation() and
   not l instanceof EmptyLocation
 }
+
+query predicate type_location(Type t, SourceLocation l) {
+  l = t.getLocation() and not l instanceof EmptyLocation
+}