1 files changed, 104 insertions, 0 deletions
diff --git a/test/resolv/test_win32_config.rb b/test/resolv/test_win32_config.rb
new file mode 100644
index 0000000000..f44d19544a
--- /dev/null
+++ b/test/resolv/test_win32_config.rb
@@ -0,0 +1,104 @@
+# frozen_string_literal: true
+
+require 'test/unit'
+require 'resolv'
+
+class TestWin32Config < Test::Unit::TestCase
+  def setup
+    omit 'Win32::Resolv tests only run on Windows' unless RUBY_PLATFORM =~ /mswin|mingw|cygwin/
+  end
+
+  def test_get_item_property_string
+    # Test reading a string registry value
+    result = Win32::Resolv.send(:get_item_property,
+                                Win32::Resolv::TCPIP_NT,
+                                'DataBasePath')
+
+    # Should return a string (empty or with a path)
+    assert_instance_of String, result
+  end
+
+  def test_get_item_property_with_expand
+    # Test reading an expandable string registry value
+    result = Win32::Resolv.send(:get_item_property,
+                                Win32::Resolv::TCPIP_NT,
+                                'DataBasePath',
+                                expand: true)
+
+    # Should return a string with environment variables expanded
+    assert_instance_of String, result
+  end
+
+  def test_get_item_property_dword
+    # Test reading a DWORD registry value
+    result = Win32::Resolv.send(:get_item_property,
+                                Win32::Resolv::TCPIP_NT,
+                                'UseDomainNameDevolution',
+                                dword: true)
+
+    # Should return an integer (0 or 1 typically)
+    assert_kind_of Integer, result
+  end
+
+  def test_get_item_property_nonexistent_key
+    # Test reading a non-existent registry key
+    result = Win32::Resolv.send(:get_item_property,
+                                Win32::Resolv::TCPIP_NT,
+                                'NonExistentKeyThatShouldNotExist')
+
+    # Should return empty string for non-existent string values
+    assert_equal '', result
+  end
+
+  def test_get_item_property_nonexistent_key_dword
+    # Test reading a non-existent registry key as DWORD
+    result = Win32::Resolv.send(:get_item_property,
+                                Win32::Resolv::TCPIP_NT,
+                                'NonExistentKeyThatShouldNotExist',
+                                dword: true)
+
+    # Should return 0 for non-existent DWORD values
+    assert_equal 0, result
+  end
+
+  def test_get_item_property_search_list
+    # Test reading SearchList which may exist in the registry
+    result = Win32::Resolv.send(:get_item_property,
+                                Win32::Resolv::TCPIP_NT,
+                                'SearchList')
+
+    # Should return a string (may be empty if not configured)
+    assert_instance_of String, result
+  end
+
+  def test_get_item_property_nv_domain
+    # Test reading NV Domain which may exist in the registry
+    result = Win32::Resolv.send(:get_item_property,
+                                Win32::Resolv::TCPIP_NT,
+                                'NV Domain')
+
+    # Should return a string (may be empty if not configured)
+    assert_instance_of String, result
+  end
+
+  def test_get_item_property_with_invalid_path
+    # Test with an invalid registry path
+    result = Win32::Resolv.send(:get_item_property,
+                                'SYSTEM\NonExistent\Path',
+                                'SomeKey')
+
+    # Should return empty string for invalid path
+    assert_equal '', result
+  end
+
+  def test_get_item_property_with_invalid_path_dword
+    # Test with an invalid registry path as DWORD
+    result = Win32::Resolv.send(:get_item_property,
+                                'SYSTEM\NonExistent\Path',
+                                'SomeKey',
+                                dword: true)
+
+    # Should return 0 for invalid path
+    assert_equal 0, result
+  end
+end