diff --git a/examples/two_sections.html b/examples/two_sections.html
index 356ea66..a4b9f2a 100644
--- a/examples/two_sections.html
+++ b/examples/two_sections.html
@@ -1,7 +1,4 @@
 {{#foo}}
-  BAR
 {{/foo}}
-BAR
-{{^bar}}
-  BAR
+{{#bar}}
 {{/bar}}
diff --git a/examples/two_sections.js b/examples/two_sections.js
index bbd9cb9..8546f64 100644
--- a/examples/two_sections.js
+++ b/examples/two_sections.js
@@ -1,4 +1 @@
-var two_sections = {
-  foo: true,
-  bar: false
-};
\ No newline at end of file
+var two_sections = {};
\ No newline at end of file
diff --git a/examples/two_sections.txt b/examples/two_sections.txt
index 8a62495..8b13789 100644
--- a/examples/two_sections.txt
+++ b/examples/two_sections.txt
@@ -1,3 +1 @@
-  BAR
-BAR
-  BAR
+
diff --git a/test/mustache_spec.rb b/test/mustache_spec.rb
index b4067a3..32c75e3 100644
--- a/test/mustache_spec.rb
+++ b/test/mustache_spec.rb
@@ -23,191 +23,222 @@ def load_test(dir, name, partial=false)
 end
 
 describe "mustache" do
-  before(:all) do
-    mustache = File.read(__DIR__ + "/../mustache.js")
-    stubbed_gettext = <<-JS
-      // Stubbed gettext translation method for {{_i}}{{/i}} tags in Mustache.
-      function _(text) {
-        return text;
-      }
-    JS
-
-    @boilerplate = <<-JS
-      #{mustache}
-      #{stubbed_gettext}
-    JS
-  end
-
-  it "should return the same when invoked multiple times" do
-    js = <<-JS
-      #{@boilerplate}
-      Mustache.to_html("x")
-      print(Mustache.to_html("x"));
-    JS
-    run_js(js).should == "x\n"
-
-  end
-
-  it "should clear the context after each run" do
-    js = <<-JS
-      #{@boilerplate}
-      Mustache.to_html("{{#list}}{{x}}{{/list}}", {list: [{x: 1}]})
-      try {
-        print(Mustache.to_html("{{#list}}{{x}}{{/list}}", {list: [{}]}));
-      } catch(e) {
-        print('ERROR: ' + e.message);
-      }
-    JS
-    run_js(js).should == "\n"
-  end
 
-  it "should not double-render" do
-    js = <<-JS
-      #{@boilerplate}
-      var template = "{{#foo}}{{bar}}{{/foo}}";
-      var ctx = {
-        foo: true,
-        bar: "{{win}}",
-        win: "FAIL"
-      };
+  shared_examples_for "Mustache rendering" do
+
+    before(:all) do
+      mustache = File.read(__DIR__ + "/../mustache.js")
+      stubbed_gettext = <<-JS
+        // Stubbed gettext translation method for {{_i}}{{/i}} tags in Mustache.
+        function _(text) {
+          return text;
+        }
+      JS
+
+      @boilerplate = <<-JS
+        #{mustache}
+        #{stubbed_gettext}
+      JS
+    end
 
-      print(Mustache.to_html(template, ctx))
-    JS
+    it "should return the same when invoked multiple times" do
+      js = <<-JS
+        #{@boilerplate}
+        Mustache.to_html("x")
+        print(Mustache.to_html("x"));
+      JS
+      run_js(@run_js, js).should == "x\n"
 
-    run_js(js).strip.should == "{{win}}"
-  end
+    end
 
-  it "should work with i18n" do
-    js = <<-JS
-      #{@boilerplate}
+    it "should clear the context after each run" do
+      js = <<-JS
+        #{@boilerplate}
+        Mustache.to_html("{{#list}}{{x}}{{/list}}", {list: [{x: 1}]})
+        try {
+          print(Mustache.to_html("{{#list}}{{x}}{{/list}}", {list: [{}]}));
+        } catch(e) {
+          print('ERROR: ' + e.message);
+        }
+      JS
+      run_js(@run_js, js).should == "\n"
+    end
 
-      var template = "{{_i}}foo {{bar}}{{/i}}";
-      var ctx = {
-        bar: "BAR"
-      };
+    it "should not double-render" do
+      js = <<-JS
+        #{@boilerplate}
+        var template = "{{#foo}}{{bar}}{{/foo}}";
+        var ctx = {
+          foo: true,
+          bar: "{{win}}",
+          win: "FAIL"
+        };
 
-      print(Mustache.to_html(template, ctx));
-    JS
+        print(Mustache.to_html(template, ctx))
+      JS
 
-    run_js(js).strip.should == "foo BAR"
-  end
+      run_js(@run_js, js).strip.should == "{{win}}"
+    end
 
-  it "should work with empty sections" do
-    js = <<-JS
-    try{
-      #{@boilerplate}
+    it "should work with i18n" do
+      js = <<-JS
+        #{@boilerplate}
 
-      print(Mustache.to_html("{{#foo}}{{/foo}}foo{{#bar}}{{/bar}}", {}));
-    } catch(e) {
-      print(e);
-    }
-    JS
+        var template = "{{_i}}foo {{bar}}{{/i}}";
+        var ctx = {
+          bar: "BAR"
+        };
 
-    run_js(js).strip.should == "foo"
-  end
+        print(Mustache.to_html(template, ctx));
+      JS
 
+      run_js(@run_js, js).strip.should == "foo BAR"
+    end
 
-  non_partials.each do |testname|
-    describe testname do
-      it "should generate the correct html" do
+    it "should work with empty sections" do
+      js = <<-JS
+      try{
+        #{@boilerplate}
 
-        view, template, expect = load_test(__DIR__, testname)
+        print(Mustache.to_html("{{#foo}}{{/foo}}foo{{#bar}}{{/bar}}", {}));
+      } catch(e) {
+        print(e);
+      }
+      JS
 
-        runner = <<-JS
-          try {
-            #{@boilerplate}
-            #{view}
-            var template = #{template};
-            var result = Mustache.to_html(template, #{testname});
-            print(result);
-          } catch(e) {
-            print('ERROR: ' + e.message);
-          }
-        JS
+      run_js(@run_js, js).strip.should == "foo"
+    end
 
-        run_js(runner).should == expect
-      end
-      it "should sendFun the correct html" do
-
-        view, template, expect = load_test(__DIR__, testname)
-
-        runner = <<-JS
-          try {
-            #{@boilerplate}
-            #{view}
-            var chunks = [];
-            var sendFun = function(chunk) {
-              if (chunk != "") {
-                chunks.push(chunk);
+    non_partials.each do |testname|
+      describe testname do
+        it "should generate the correct html" do
+
+          view, template, expect = load_test(__DIR__, testname)
+
+          runner = <<-JS
+            try {
+              #{@boilerplate}
+              #{view}
+              var template = #{template};
+              var result = Mustache.to_html(template, #{testname});
+              print(result);
+            } catch(e) {
+              print('ERROR: ' + e.message);
+            }
+          JS
+
+          run_js(@run_js, runner).should == expect
+        end
+        it "should sendFun the correct html" do
+
+          view, template, expect = load_test(__DIR__, testname)
+
+          runner = <<-JS
+            try {
+              #{@boilerplate}
+              #{view}
+              var chunks = [];
+              var sendFun = function(chunk) {
+                if (chunk != "") {
+                  chunks.push(chunk);
+                }
               }
+              var template = #{template};
+              Mustache.to_html(template, #{testname}, null, sendFun);
+              print(chunks.join("\\n"));
+            } catch(e) {
+              print('ERROR: ' + e.message);
             }
-            var template = #{template};
-            Mustache.to_html(template, #{testname}, null, sendFun);
-            print(chunks.join("\\n"));
-          } catch(e) {
-            print('ERROR: ' + e.message);
-          }
-        JS
-
-        run_js(runner).strip.should == expect.strip
+          JS
+
+          run_js(@run_js, runner).strip.should == expect.strip
+        end
       end
     end
-  end
 
-  partials.each do |testname|
-    describe testname do
-      it "should generate the correct html" do
-
-        view, template, partial, expect =
-              load_test(__DIR__, testname, true)
-
-        runner = <<-JS
-          try {
-            #{@boilerplate}
-            #{view}
-            var template = #{template};
-            var partials = {"partial": #{partial}};
-            var result = Mustache.to_html(template, partial_context, partials);
-            print(result);
-          } catch(e) {
-            print('ERROR: ' + e.message);
-          }
-        JS
-
-        run_js(runner).should == expect
-      end
-      it "should sendFun the correct html" do
-
-        view, template, partial, expect =
-              load_test(__DIR__, testname, true)
-
-        runner = <<-JS
-          try {
-            #{@boilerplate}
-            #{view};
-            var template = #{template};
-            var partials = {"partial": #{partial}};
-            var chunks = [];
-            var sendFun = function(chunk) {
-              if (chunk != "") {
-                chunks.push(chunk);
+    partials.each do |testname|
+      describe testname do
+        it "should generate the correct html" do
+
+          view, template, partial, expect =
+                load_test(__DIR__, testname, true)
+
+          runner = <<-JS
+            try {
+              #{@boilerplate}
+              #{view}
+              var template = #{template};
+              var partials = {"partial": #{partial}};
+              var result = Mustache.to_html(template, partial_context, partials);
+              print(result);
+            } catch(e) {
+              print('ERROR: ' + e.message);
+            }
+          JS
+
+          run_js(@run_js, runner).should == expect
+        end
+        it "should sendFun the correct html" do
+
+          view, template, partial, expect =
+                load_test(__DIR__, testname, true)
+
+          runner = <<-JS
+            try {
+              #{@boilerplate}
+              #{view};
+              var template = #{template};
+              var partials = {"partial": #{partial}};
+              var chunks = [];
+              var sendFun = function(chunk) {
+                if (chunk != "") {
+                  chunks.push(chunk);
+                }
               }
+              Mustache.to_html(template, partial_context, partials, sendFun);
+              print(chunks.join("\\n"));
+            } catch(e) {
+              print('ERROR: ' + e.message);
             }
-            Mustache.to_html(template, partial_context, partials, sendFun);
-            print(chunks.join("\\n"));
-          } catch(e) {
-            print('ERROR: ' + e.message);
-          }
-        JS
-
-        run_js(runner).strip.should == expect.strip
+          JS
+
+          run_js(@run_js, runner).strip.should == expect.strip
+        end
       end
     end
   end
 
-  def run_js(js)
+  context "running in JavaScriptCore (WebKit, Safari)" do
+    before(:each) do
+      @run_js = :run_js_jsc
+    end
+    it_should_behave_like "Mustache rendering"
+  end
+
+  context "running in Rhino (Mozilla)" do
+    before(:each) do
+      @run_js = :run_js_rhino
+    end
+
+    it_should_behave_like "Mustache rendering"
+  end
+
+  def run_js(runner, js)
+    send(runner, js)
+    # run_js_rhino(js)
+    # js_jsc = run_js_jsc(js)
+    # js_rhino = run_js_rhino(js)
+    # return js_jsc unless js_jsc != js_rhino
+  end
+
+  def run_js_jsc(js)
+    File.open("runner.js", 'w') {|f| f << js}
+    `jsc runner.js`
+  end
+
+  def run_js_rhino(js)
     File.open("runner.js", 'w') {|f| f << js}
-    `js runner.js`
+    `java org.mozilla.javascript.tools.shell.Main runner.js`
   end
 end