[ruby/win32ole] Test constants for the backward compatibility

https://github.com/ruby/win32ole/commit/22facf50fd

test/win32ole/test_win32ole.rb

@@ -167,6 +167,11 @@ if defined?(WIN32OLE)
       assert_instance_of(WIN32OLE, @dict2)
     end
 
+    def test_toplevel_constants_backward_compatibility
+      assert_equal(WIN32OLE::RuntimeError, ::WIN32OLERuntimeError)
+      assert_equal(WIN32OLE::QueryInterfaceError, ::WIN32OLEQueryInterfaceError)
+    end
+
     def test_s_new_exc
       assert_raise(TypeError) {
         WIN32OLE.new(1)

test/win32ole/test_win32ole_event.rb

@@ -30,6 +30,10 @@ swbemsink_available =
 
 if defined?(WIN32OLE::Event)
   class TestWIN32OLE_EVENT < Test::Unit::TestCase
+    def test_toplevel_constants_backward_compatibility
+      assert_equal(WIN32OLE::Event, ::WIN32OLE_EVENT)
+    end
+
     def test_s_new_exception
       assert_raise(TypeError) {
         WIN32OLE::Event.new("A")

test/win32ole/test_win32ole_method.rb

@@ -20,6 +20,10 @@ if defined?(WIN32OLE::Method)
       @m_file_name = WIN32OLE::Method.new(ole_type, "name")
     end
 
+    def test_toplevel_constants_backward_compatibility
+      assert_equal(WIN32OLE::Method, ::WIN32OLE_METHOD)
+    end
+
     def test_initialize
       ole_type = WIN32OLE::Type.new("Microsoft Shell Controls And Automation", "Shell")
       assert_raise(TypeError) {

test/win32ole/test_win32ole_param.rb

@@ -27,6 +27,10 @@ if defined?(WIN32OLE::Param)
       @param_key = m_add.params[0]
     end
 
+    def test_constants_backward_compatibility
+      assert_equal(WIN32OLE::Param, ::WIN32OLE_PARAM)
+    end
+
     def test_s_new
       assert_raise(ArgumentError) {
         WIN32OLE::Param.new("hoge")

test/win32ole/test_win32ole_record.rb

@@ -66,6 +66,12 @@ End Class
 
 
 if defined?(WIN32OLE::Record)
+  class TestWIN32OLE_RECORD < Test::Unit::TestCase
+    def test_toplevel_constants_backward_compatibility
+      assert_equal(WIN32OLE::Record, ::WIN32OLE_RECORD)
+    end
+  end
+
   def rbcomtest_exist?
     WIN32OLE.new(PROGID_RBCOMTEST)
     true

test/win32ole/test_win32ole_type.rb

@@ -7,6 +7,9 @@ require "test/unit"
 
 if defined?(WIN32OLE::Type)
   class TestWIN32OLE_TYPE < Test::Unit::TestCase
+    def test_toplevel_constants_backward_compatibility
+      assert_equal(WIN32OLE::Type, ::WIN32OLE_TYPE)
+    end
 
     def test_s_progids
       progids = WIN32OLE::Type.progids

test/win32ole/test_win32ole_typelib.rb

@@ -7,6 +7,10 @@ require "test/unit"
 
 if defined?(WIN32OLE::TypeLib)
   class TestWIN32OLE_TYPELIB < Test::Unit::TestCase
+    def test_toplevel_constants_backward_compatibility
+      assert_equal(WIN32OLE::TypeLib, ::WIN32OLE_TYPELIB)
+    end
+
     def test_s_typelibs
       tlibs = WIN32OLE::TypeLib.typelibs
       assert_instance_of(Array, tlibs)

test/win32ole/test_win32ole_variable.rb

@@ -16,6 +16,10 @@ if defined?(WIN32OLE::Variable)
       @var2 = variables.find {|v| v.name == 'UILevel'}
     end
 
+    def test_toplevel_constants_backward_compatibility
+      assert_equal(WIN32OLE::Variable, ::WIN32OLE_VARIABLE)
+    end
+
     def test_initialize
       assert_raise(TypeError) {WIN32OLE::Variable.new}
     end

test/win32ole/test_win32ole_variant.rb

@@ -17,6 +17,10 @@ if defined?(WIN32OLE::Variant)
       WIN32OLE.locale = @orglocale
     end
 
+    def test_toplevel_constants_backward_compatibility
+      assert_equal(WIN32OLE::Variant, ::WIN32OLE_VARIANT)
+    end
+
     def test_s_new
       obj = WIN32OLE::Variant.new('foo')
       assert_instance_of(WIN32OLE::Variant, obj)

test/win32ole/test_win32ole_variant_m.rb

@@ -8,6 +8,11 @@ require "test/unit"
 if defined?(WIN32OLE::VARIANT)
   class TestWin32OLE_VARIANT_MODULE < Test::Unit::TestCase
     include WIN32OLE::VARIANT
+
+    def test_toplevel_constants_backward_compatibility
+      assert_equal(WIN32OLE::VariantType, WIN32OLE::VARIANT)
+    end
+
     def test_variant
       assert_equal(0, VT_EMPTY)
       assert_equal(1, VT_NULL)