Move external AST tests into qunit spec

spec/parser_spec.rb

@@ -417,21 +417,10 @@ describe "Parser" do
   end
 
   context "externally compiled AST" do
-
     it "can pass through an already-compiled AST" do
       ast_for(@context.eval('new Handlebars.AST.ProgramNode([ new Handlebars.AST.ContentNode("Hello")]);')).should == root do
         content "Hello"
       end
     end
-
-    it "can pass through an already-compiled AST via compile/precompile" do
-      @context = Handlebars::Spec::CONTEXT
-
-      code = 'Handlebars.compile(new Handlebars.AST.ProgramNode([ new Handlebars.AST.ContentNode("Hello")]))();'
-      @context.eval(code).should == "Hello"
-
-      code = @context.eval 'Handlebars.precompile(new Handlebars.AST.ProgramNode([ new Handlebars.AST.ContentNode("Hello")]))'
-      @context.eval("(#{code})(this)").should == "Hello"
-    end
   end
 end

spec/qunit_spec.js

@@ -1538,6 +1538,10 @@ test("Passing falsy values to Handlebars.compile throws an error", function() {
   }, "You must pass a string or Handlebars AST to Handlebars.precompile. You passed null");
 });
 
+test("can pass through an already-compiled AST via compile/precompile", function() {
+  equal(Handlebars.compile(new Handlebars.AST.ProgramNode([ new Handlebars.AST.ContentNode("Hello")]))(), 'Hello')
+});
+
 test('GH-408: Multiple loops fail', function() {
   var context = [
     { name: "John Doe", location: { city: "Chicago" } },