1 files changed, 23 insertions, 0 deletions
diff --git a/test/test_win32api.rb b/test/test_win32api.rb
new file mode 100644
index 0000000000..b1856a3364
--- /dev/null
+++ b/test/test_win32api.rb
@@ -0,0 +1,23 @@
+require "test/unit"
+begin
+  require "Win32API"
+rescue LoadError
+end
+
+class TestWin32API < Test::Unit::TestCase
+  def test_params_string
+    m2w = Win32API.new("kernel32", "MultiByteToWideChar", "ilpipi", "i")
+    str = "utf-8 string".encode("utf-8")
+    buf = "\0" * (str.size * 2)
+    assert_equal str.size, m2w.call(65001, 0, str, str.bytesize, buf, str.size)
+    assert_equal str.encode("utf-16le"), buf.force_encoding("utf-16le")
+  end
+
+  def test_params_array
+    m2w = Win32API.new("kernel32", "MultiByteToWideChar", ["i", "l", "p", "i", "p", "i"], "i")
+    str = "utf-8 string".encode("utf-8")
+    buf = "\0" * (str.size * 2)
+    assert_equal str.size, m2w.call(65001, 0, str, str.bytesize, buf, str.size)
+    assert_equal str.encode("utf-16le"), buf.force_encoding("utf-16le")
+  end
+end if defined?(Win32API)