diff --git a/test/test_cvmat_drawing.rb b/test/test_cvmat_drawing.rb
index e126725..3a92b54 100755
--- a/test/test_cvmat_drawing.rb
+++ b/test/test_cvmat_drawing.rb
@@ -138,15 +138,17 @@ class TestCvMat_drawing < OpenCVTestCase
   end
 
   def test_put_text
-    flunk('CvMat#put_text is not tested yet.')
     m0 = create_cvmat(240, 320, :cv8u, 3) { CvColor::White }
     m1 = m0.clone
-    m2 = m0.put_text('test', CvPoint.new(30, 40), CvColor::Red)
+    m1.put_text!('test 1', CvPoint.new(60, 90), CvFont.new(:simplex), CvColor::Blue)
+    font = CvFont.new(:plain, :hscale => 5.0, :vscale => 4.5,
+                      :shear => 1.0, :thickness => 3, :line_type => 5, :italic => true)
+    m2 = m0.put_text('test 2', CvPoint.new(30, 80), font, CvColor::Red)
 
     # Uncomment the following lines to view the image
-    GUI::Window.new('Put text: Blue, thickness = 1').show(m1)
-    GUI::Window.new('Put text: Red, thickness = 3').show(m2)
-    GUI::wait_key
+    # GUI::Window.new('Put text: Blue, thickness = 1').show(m1)
+    # GUI::Window.new('Put text: Red, thickness = 3').show(m2)
+    # GUI::wait_key
   end
 end