1 files changed, 21 insertions, 0 deletions
diff --git a/test/fiddle/test_fiddle.rb b/test/fiddle/test_fiddle.rb
index 4c6ab97b12..f910978af5 100644
--- a/test/fiddle/test_fiddle.rb
+++ b/test/fiddle/test_fiddle.rb
@@ -4,6 +4,27 @@ rescue LoadError
 end
 
 class TestFiddle < Fiddle::TestCase
+  def test_constants_match
+    [
+      :TYPE_VOID,
+      :TYPE_VOIDP,
+      :TYPE_CHAR,
+      :TYPE_SHORT,
+      :TYPE_INT,
+      :TYPE_LONG,
+      :TYPE_LONG_LONG,
+      :TYPE_FLOAT,
+      :TYPE_DOUBLE,
+      :TYPE_SIZE_T,
+      :TYPE_SSIZE_T,
+      :TYPE_PTRDIFF_T,
+      :TYPE_INTPTR_T,
+      :TYPE_UINTPTR_T,
+    ].each do |name|
+      assert_equal(DL.const_get(name), Fiddle.const_get(name), "Fiddle::#{name}")
+    end
+  end
+
   def test_windows_constant
     require 'rbconfig'
     if RbConfig::CONFIG['host_os'] =~ /mswin|mingw/