Add tests for html_escape, and remove an unneeded backslash (closes #10511) [fxn]

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@8422 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

actionpack/lib/action_view/template_handlers/erb.rb

@@ -5,7 +5,7 @@ class ERB
     HTML_ESCAPE = { '&' => '&amp;', '"' => '&quot;', '>' => '&gt;', '<' => '&lt;' }
 
     def html_escape(s)
-      s.to_s.gsub(/[&\"><]/) { |special| HTML_ESCAPE[special] }
+      s.to_s.gsub(/[&"><]/) { |special| HTML_ESCAPE[special] }
     end
   end
 end

actionpack/test/template/erb_util_test.rb

@@ -0,0 +1,56 @@
+require "#{File.dirname(__FILE__)}/../abstract_unit"
+
+class ErbUtilTest < Test::Unit::TestCase
+  include ERB::Util
+  
+  def test_amp
+    assert_equal '&amp;', html_escape('&')
+  end
+  
+  def test_quot
+    assert_equal '&quot;', html_escape('"')
+  end
+
+  def test_lt
+    assert_equal '&lt;', html_escape('<')
+  end
+
+  def test_gt
+    assert_equal '&gt;', html_escape('>')
+  end
+  
+  def test_rest_in_ascii
+    (0..127).to_a.map(&:chr).each do |chr|
+      next if %w(& " < >).include?(chr)
+      assert_equal chr, html_escape(chr)
+    end
+  end
+end
+require "#{File.dirname(__FILE__)}/../abstract_unit"
+
+class ErbUtilTest < Test::Unit::TestCase
+  include ERB::Util
+  
+  def test_amp
+    assert_equal '&amp;', html_escape('&')
+  end
+  
+  def test_quot
+    assert_equal '&quot;', html_escape('"')
+  end
+
+  def test_lt
+    assert_equal '&lt;', html_escape('<')
+  end
+
+  def test_gt
+    assert_equal '&gt;', html_escape('>')
+  end
+  
+  def test_rest_in_ascii
+    (0..127).to_a.map(&:chr).each do |chr|
+      next if %w(& " < >).include?(chr)
+      assert_equal chr, html_escape(chr)
+    end
+  end
+end