Add test for block replaced with anchors

lib/models/__tests__/templateBlock.js

@@ -67,6 +67,36 @@ describe('TemplateBlock', function() {
     });
 
     describe('toNunjucksExt()', function() {
+        pit('should replace by block anchor', function() {
+            var templateBlock = TemplateBlock.create('sayhello', function(block) {
+                return 'Hello';
+            });
+
+            var blocks = {};
+
+            // Create a fresh Nunjucks environment
+            var env = new nunjucks.Environment(null, { autoescape: false });
+
+            // Add template block to environement
+            var Ext = templateBlock.toNunjucksExt({}, blocks);
+            env.addExtension(templateBlock.getExtensionName(), new Ext());
+
+            // Render a template using the block
+            var src = '{% sayhello %}{% endsayhello %}';
+            return Promise.nfcall(env.renderString.bind(env), src)
+            .then(function(res) {
+                blocks = Immutable.fromJS(blocks);
+                expect(blocks.size).toBe(1);
+
+                var blockId = blocks.keySeq().get(0);
+                var block = blocks.get(blockId);
+
+                expect(res).toBe('{{-%' + blockId + '%-}}');
+                expect(block.get('body')).toBe('Hello');
+                expect(block.get('name')).toBe('sayhello');
+            });
+        });
+
         pit('must create a valid nunjucks extension', function() {
             var templateBlock = TemplateBlock.create('sayhello', function(block) {
                 return {