diff --git a/test/rbi/type_test.rb b/test/rbi/type_test.rb
index bdfb26cc..44679519 100644
--- a/test/rbi/type_test.rb
+++ b/test/rbi/type_test.rb
@@ -372,6 +372,16 @@ def test_build_type_class_of
       assert_equal("T.class_of(String)", type.to_rbi)
     end
 
+    def test_build_type_class_of_generic
+      type = Type.class_of(Type.simple("String"), Type.simple("Integer"))
+      assert_equal("T.class_of(String)[Integer]", type.to_rbi)
+    end
+
+    def test_buid_type_t_class
+      type = Type.t_class(Type.simple("String"))
+      assert_equal("T::Class[String]", type.to_rbi)
+    end
+
     def test_build_type_self_type
       type = Type.self_type
       assert_equal("T.self_type", type.to_rbi)
@@ -387,6 +397,11 @@ def test_build_type_untyped
       assert_equal("T.untyped", type.to_rbi)
     end
 
+    def test_buid_type_noreturn
+      type = Type.noreturn
+      assert_equal("T.noreturn", type.to_rbi)
+    end
+
     def test_types_comparison
       type1 = Type.simple("String")
       type2 = Type.simple("String")