diff --git a/samples/Text/mac.txt b/samples/Text/mac.txt
new file mode 100644
index 00000000..c22612b9
--- /dev/null
+++ b/samples/Text/mac.txt
@@ -0,0 +1 @@
+line 1
line 2
\ No newline at end of file
diff --git a/test/test_blob.rb b/test/test_blob.rb
index 17e9ef8c..333b0cec 100644
--- a/test/test_blob.rb
+++ b/test/test_blob.rb
@@ -65,6 +65,14 @@ class TestBlob < Test::Unit::TestCase
     assert_equal ["module Foo", "end", ""], blob("Ruby/foo.rb").lines
   end
 
+  def test_mac_format
+    assert blob("Text/mac.txt").mac_format?
+  end
+
+  def test_lines_mac_format
+    assert_equal ["line 1", "line 2", ""], blob("Text/mac.txt").lines
+  end
+
   def test_size
     assert_equal 15, blob("Ruby/foo.rb").size
   end