diff --git a/ruby/t/tc_canvas.rb b/ruby/t/tc_canvas.rb
index 767c50a..ca480ab 100644
--- a/ruby/t/tc_canvas.rb
+++ b/ruby/t/tc_canvas.rb
@@ -1,12 +1,12 @@
 require 'caca'
 
-class TC_Canvas < Test::Unit::TestCase
+class TC_Canvas < MiniTest::Test
     def setup
         @c = Caca::Canvas.new(3, 3)
     end
     def test_create
         c = Caca::Canvas.new(3, 3)
-        assert_not_nil(c, 'Canvas creation failed')
+        refute_nil(c, 'Canvas creation failed')
         assert(c.width == 3 && c.height == 3, 'Wrong size for new canvas')
     end
     def test_width
@@ -47,13 +47,13 @@ class TC_Canvas < Test::Unit::TestCase
     end
     def test_render
         c = Caca::Canvas.new(4,4)
-	c.put_str(0,0,"plop")
-	f = Caca::Font.new(Caca::Font.list[0])
-	assert_not_nil(c.render(f, c.width*f.width, c.height*f.height, c.width*f.width*4))
+        c.put_str(0,0,"plop")
+        f = Caca::Font.new(Caca::Font.list[0])
+        refute_nil(c.render(f, c.width*f.width, c.height*f.height, c.width*f.width*4))
     end
     def test_fail_render
         c = Caca::Canvas.new(4,4)
-        assert_raise(ArgumentError) {
+        assert_raises(ArgumentError) {
             c.render(nil, c.width, c.height, c.width*4)
         }
     end
diff --git a/ruby/t/tc_display.rb b/ruby/t/tc_display.rb
index ff2b64e..7d0010c 100644
--- a/ruby/t/tc_display.rb
+++ b/ruby/t/tc_display.rb
@@ -1,25 +1,25 @@
 require 'caca'
 
-class TC_Canvas < Test::Unit::TestCase
+class TC_Canvas < MiniTest::Test
     def test_create
         d = Caca::Display.new()
-        assert_not_nil(d, 'Display creation failed')
+        refute_nil(d, 'Display creation failed')
     end
     def test_create_with_driver
         d = Caca::Display.new(Caca::Display.driver_list[0])
-        assert_not_nil(d, 'Display creation failed')
+        refute_nil(d, 'Display creation failed')
     end
     def test_create_wrong_args
         c = Caca::Canvas.new(3, 3)
-        assert_raise(RuntimeError){Caca::Display.new("plop")}
-        assert_raise(RuntimeError){Caca::Display.new(c, "plop")}
-        assert_raise(ArgumentError){Caca::Display.new("plop", "plop")}
-        assert_raise(ArgumentError){Caca::Display.new(c, c)}
+        assert_raises(RuntimeError){Caca::Display.new("plop")}
+        assert_raises(RuntimeError){Caca::Display.new(c, "plop")}
+        assert_raises(ArgumentError){Caca::Display.new("plop", "plop")}
+        assert_raises(ArgumentError){Caca::Display.new(c, c)}
     end
     def test_create_from_canvas
         c = Caca::Canvas.new(3, 3)
         d = Caca::Display.new(c)
-        assert_not_nil(d, 'Display creation failed')
+        refute_nil(d, 'Display creation failed')
         assert_equal(d.canvas, c, 'Wrong canvas')
     end
     def test_set_title
diff --git a/ruby/t/tc_dither.rb b/ruby/t/tc_dither.rb
index ac3f42c..bdb2956 100644
--- a/ruby/t/tc_dither.rb
+++ b/ruby/t/tc_dither.rb
@@ -1,50 +1,41 @@
 require 'caca'
 
-class TC_Canvas < Test::Unit::TestCase
+class TC_Canvas < MiniTest::Test
     def test_create
-	assert_nothing_raised {
-            d = Caca::Dither.new(8, 32, 32, 32, 0, 0, 0, 0)
-	}
+        d = Caca::Dither.new(8, 32, 32, 32, 0, 0, 0, 0)
     end
     def test_fail_create
-	assert_raise(RuntimeError) {
+        assert_raises(RuntimeError) {
             d = Caca::Dither.new(-1, 32, 32, 32, 0, 0, 0, 0)
-	}
+        }
     end
     def test_set_palette
-	assert_nothing_raised {
-            d = Caca::Dither.new(8, 32, 32, 32, 0, 0, 0, 0)
-            d.palette=[[0xfff, 0xfff, 0xfff, 0xfff]]*256
-	}
+        d = Caca::Dither.new(8, 32, 32, 32, 0, 0, 0, 0)
+        d.palette = [[0xfff, 0xfff, 0xfff, 0xfff]] * 256
     end
     def test_fail_set_palette
-	assert_raise(ArgumentError) {
+        assert_raises(ArgumentError) {
             d = Caca::Dither.new(8, 32, 32, 32, 0, 0, 0, 0)
-            d.palette=[]
-	}
+            d.palette = []
+        }
     end
     def test_fail_set_palette2
-	assert_raise(RuntimeError) {
+        assert_raises(RuntimeError) {
             d = Caca::Dither.new(8, 32, 32, 32, 0, 0, 0, 0)
-            d.palette=[[0xffff, 0, 0, 0]]*256
-	}
+            d.palette = [[0xffff, 0, 0, 0]] * 256
+        }
     end
     def test_set_brightness
-        assert_nothing_raised {
-            d = Caca::Dither.new(8, 32, 32, 32, 0, 0, 0, 0)
-            d.brightness=0.5
-        }
+        d = Caca::Dither.new(8, 32, 32, 32, 0, 0, 0, 0)
+        d.brightness = 0.5
     end
     def test_set_gamma
-        assert_nothing_raised {
-            d = Caca::Dither.new(8, 32, 32, 32, 0, 0, 0, 0)
-            d.gamma=0.5
-        }
+        d = Caca::Dither.new(8, 32, 32, 32, 0, 0, 0, 0)
+        d.gamma = 0.5
     end
     def test_set_contrast
-        assert_nothing_raised {
-            d = Caca::Dither.new(8, 32, 32, 32, 0, 0, 0, 0)
-            d.contrast=0.5
-        }
+        d = Caca::Dither.new(8, 32, 32, 32, 0, 0, 0, 0)
+        d.contrast = 0.5
     end
 end
+
diff --git a/ruby/t/tc_font.rb b/ruby/t/tc_font.rb
index 7947e67..22915c9 100644
--- a/ruby/t/tc_font.rb
+++ b/ruby/t/tc_font.rb
@@ -1,21 +1,21 @@
 require 'caca'
 
-class TC_Canvas < Test::Unit::TestCase
+class TC_Canvas < MiniTest::Test
     def test_list
-	assert_not_nil(Caca::Font.list)
+        refute_nil(Caca::Font.list)
     end
     def test_load
-	Caca::Font.list.each{|f|
-		font = Caca::Font.new(f)
-		assert_not_nil(font)
-		assert_not_nil(font.width)
-		assert_not_nil(font.height)
-		assert_not_nil(font.blocks)
-	}
+        Caca::Font.list.each{|f|
+            font = Caca::Font.new(f)
+            refute_nil(font)
+            refute_nil(font.width)
+            refute_nil(font.height)
+            refute_nil(font.blocks)
+        }
     end
     def test_fail_load
-	assert_raise(RuntimeError) {
-		Caca::Font.new("This font should not exist")
-	}
+        assert_raises(RuntimeError) {
+            Caca::Font.new("This font should not exist")
+        }
     end
 end
diff --git a/ruby/t/tc_frame.rb b/ruby/t/tc_frame.rb
index 437ec04..4887aed 100644
--- a/ruby/t/tc_frame.rb
+++ b/ruby/t/tc_frame.rb
@@ -1,19 +1,19 @@
 require 'caca'
 
-class TC_Frame < Test::Unit::TestCase
-	def setup
-		@c = Caca::Canvas.new(3, 3)
-	end
-	def test_create
-	      f = @c.create_frame(1)
-              assert(f, 'Frame creation failed')
-	      @c.free_frame(1)
-        end
-        def test_name
-	     f = @c.create_frame(1)
-	     assert(@c.frame_name, 'Failed to get frame name')
-	     @c.frame_name="test"
-	     assert(@c.frame_name == "test", 'Failed to set frame name')
-	     @c.free_frame(1)
-        end
+class TC_Frame < MiniTest::Test
+    def setup
+        @c = Caca::Canvas.new(3, 3)
+    end
+    def test_create
+        f = @c.create_frame(1)
+        assert(f, 'Frame creation failed')
+        @c.free_frame(1)
+    end
+    def test_name
+        f = @c.create_frame(1)
+        assert(@c.frame_name, 'Failed to get frame name')
+        @c.frame_name="test"
+        assert(@c.frame_name == "test", 'Failed to set frame name')
+        @c.free_frame(1)
+    end
 end
diff --git a/ruby/test b/ruby/test
index 1c0585b..66ee708 100755
--- a/ruby/test
+++ b/ruby/test
@@ -1,11 +1,10 @@
 #!/usr/bin/ruby
 
-require 'test/unit'
+require 'minitest/autorun'
 
 $LOAD_PATH.unshift(".libs").unshift("lib")
 
-Dir.glob("t/tc*.rb").each{ |t|
+Dir.glob("./t/tc*.rb").each{ |t|
 	require t
 }
 
-exit Test::Unit::AutoRunner.run