3 files changed, 24 insertions, 0 deletions
diff --git a/test/win32ole/test_win32ole.rb b/test/win32ole/test_win32ole.rb
index 983c47929e..b946aa6ff0 100644
--- a/test/win32ole/test_win32ole.rb
+++ b/test/win32ole/test_win32ole.rb
@@ -153,6 +153,15 @@ if defined?(WIN32OLE)
       assert_instance_of(WIN32OLE, @dict2)
     end
 
+    def test_s_new_exc
+      assert_raise(TypeError) {
+        WIN32OLE.new(1)
+      }
+      assert_raise(TypeError) {
+        WIN32OLE.new("Scripting.Dictionary", 1)
+      }
+    end
+
     def test_s_new_DCOM
       rshell = WIN32OLE.new("Shell.Application")
       assert_instance_of(WIN32OLE, rshell)
@@ -172,6 +181,12 @@ if defined?(WIN32OLE)
       assert_instance_of(WIN32OLE, obj)
     end
 
+    def test_s_connect_exc
+      assert_raise(TypeError) {
+        WIN32OLE.connect(1)
+      }
+    end
+
     def test_invoke_accept_symbol_hash_key
       fso = WIN32OLE.new('Scripting.FileSystemObject')
       afolder = fso.getFolder(".")
diff --git a/test/win32ole/test_win32ole_method.rb b/test/win32ole/test_win32ole_method.rb
index 161b10233f..f2ed0c622c 100644
--- a/test/win32ole/test_win32ole_method.rb
+++ b/test/win32ole/test_win32ole_method.rb
@@ -24,6 +24,9 @@ if defined?(WIN32OLE_METHOD)
 
     def test_initialize
       ole_type = WIN32OLE_TYPE.new("Microsoft Shell Controls And Automation", "Shell")
+      assert_raise(TypeError) {
+        WIN32OLE_METHOD.new(1, 2)
+      }
       assert_raise(ArgumentError) {
         method = WIN32OLE_METHOD.new("foo")
       }
diff --git a/test/win32ole/test_win32ole_variant.rb b/test/win32ole/test_win32ole_variant.rb
index 1226e0de50..af3876837d 100644
--- a/test/win32ole/test_win32ole_variant.rb
+++ b/test/win32ole/test_win32ole_variant.rb
@@ -18,6 +18,12 @@ if defined?(WIN32OLE_VARIANT)
       assert_instance_of(WIN32OLE_VARIANT, obj)
     end
 
+    def test_s_new_exc
+      assert_raise(TypeError) {
+        WIN32OLE_VARIANT.new(/foo/)
+      }
+    end
+
     def test_s_new_no_argument
       ex = nil
       begin