1 files changed, 41 insertions, 0 deletions
diff --git a/activesupport/test/safe_buffer_test.rb b/activesupport/test/safe_buffer_test.rb
new file mode 100644
index 0000000000..bf61f9e58c
--- /dev/null
+++ b/activesupport/test/safe_buffer_test.rb
@@ -0,0 +1,41 @@
+require 'abstract_unit'
+
+class SafeBufferTest < ActiveSupport::TestCase
+  def setup
+    @buffer = ActiveSupport::SafeBuffer.new
+  end
+
+  test "Should look like a string" do
+    assert @buffer.is_a?(String)
+    assert_equal "", @buffer
+  end
+
+  test "Should escape a raw string which is passed to them" do
+    @buffer << "<script>"
+    assert_equal "&lt;script&gt;", @buffer
+  end
+
+  test "Should NOT escape a safe value passed to it" do
+    @buffer << "<script>".html_safe
+    assert_equal "<script>", @buffer
+  end
+
+  test "Should not mess with an innocuous string" do
+    @buffer << "Hello"
+    assert_equal "Hello", @buffer
+  end
+
+  test "Should not mess with a previously escape test" do
+    @buffer << ERB::Util.html_escape("<script>")
+    assert_equal "&lt;script&gt;", @buffer
+  end
+
+  test "Should be considered safe" do
+    assert @buffer.html_safe?
+  end
+
+  test "Should return a safe buffer when calling to_s" do
+    new_buffer = @buffer.to_s
+    assert_equal ActiveSupport::SafeBuffer, new_buffer.class
+  end
+end