1 files changed, 31 insertions, 6 deletions
diff --git a/activesupport/test/safe_buffer_test.rb b/activesupport/test/safe_buffer_test.rb
index 3a9854358c..9c37458c93 100644
--- a/activesupport/test/safe_buffer_test.rb
+++ b/activesupport/test/safe_buffer_test.rb
@@ -4,6 +4,7 @@ begin
 rescue LoadError
 end
 
+require 'active_support/core_ext/string/inflections'
 require 'yaml'
 
 class SafeBufferTest < ActiveSupport::TestCase
@@ -45,7 +46,7 @@ class SafeBufferTest < ActiveSupport::TestCase
     assert_equal ActiveSupport::SafeBuffer, new_buffer.class
   end
 
-  def test_to_yaml
+  test "Should be converted to_yaml" do
     str  = 'hello!'
     buf  = ActiveSupport::SafeBuffer.new str
     yaml = buf.to_yaml
@@ -54,22 +55,46 @@ class SafeBufferTest < ActiveSupport::TestCase
     assert_equal 'hello!', YAML.load(yaml)
   end
 
-  def test_nested
+  test "Should work in nested to_yaml conversion" do
     str  = 'hello!'
     data = { 'str' => ActiveSupport::SafeBuffer.new(str) }
     yaml = YAML.dump data
     assert_equal({'str' => str}, YAML.load(yaml))
   end
 
+  test "Should work with underscore" do
+    str = "MyTest".html_safe.underscore
+    assert_equal "my_test", str
+  end
+
   test "Should not return safe buffer from gsub" do
     altered_buffer = @buffer.gsub('', 'asdf')
     assert_equal 'asdf', altered_buffer
     assert !altered_buffer.html_safe?
   end
 
-  test "Should not allow gsub! on safe buffers" do
-    assert_raise TypeError do
-      @buffer.gsub!('', 'asdf')
-    end
+  test "Should not return safe buffer from gsub!" do
+    @buffer.gsub!('', 'asdf')
+    assert_equal 'asdf', @buffer
+    assert !@buffer.html_safe?
+  end
+
+  test "Should escape dirty buffers on add" do
+    dirty = @buffer
+    clean = "hello".html_safe
+    @buffer.gsub!('', '<>')
+    assert_equal "hello&lt;&gt;", clean + @buffer
+  end
+
+  test "Should concat as a normal string when dirty" do
+    dirty = @buffer
+    clean = "hello".html_safe
+    @buffer.gsub!('', '<>')
+    assert_equal "<>hello", @buffer + clean
+  end
+
+  test "Should preserve dirty? status on copy" do
+    @buffer.gsub!('', '<>')
+    assert !@buffer.dup.html_safe?
   end
 end