lib/models/templateBlock.js: Add test file lib/models/__tests__/templateBlock.js

1 files changed, 107 insertions, 0 deletions

diff --git a/lib/models/__tests__/templateBlock.js b/lib/models/__tests__/templateBlock.js
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+++ b/lib/models/__tests__/templateBlock.js
@@ -0,0 +1,107 @@
+var nunjucks = require('nunjucks');
+var Immutable = require('immutable');
+var Promise = require('../../utils/promise');
+
+describe('TemplateBlock', function() {
+    var TemplateBlock = require('../templateBlock');
+    var TemplateEngine = require('../templateEngine');
+
+    describe('create', function() {
+        pit('must initialize a simple TemplateBlock from a function', function() {
+            var templateBlock = TemplateBlock.create('sayhello', function(block) {
+                return '<p>Hello, World!</p>';
+            });
+
+            // Check basic templateBlock properties
+            expect(templateBlock.getName()).toBe('sayhello');
+            expect(templateBlock.getPost()).toBeNull();
+            expect(templateBlock.getParse()).toBeTruthy();
+            expect(templateBlock.getEndTag()).toBe('endsayhello');
+            expect(templateBlock.getBlocks().size).toBe(0);
+            expect(templateBlock.getShortcuts().size).toBe(0);
+            expect(templateBlock.getExtensionName()).toBe('BlocksayhelloExtension');
+
+            // Check result of applying block
+            return Promise()
+            .then(function() {
+                return templateBlock.applyBlock();
+            })
+            .then(function(result) {
+                expect(result.name).toBe('sayhello');
+                expect(result.body).toBe('<p>Hello, World!</p>');
+            });
+        });
+    });
+
+    describe('toNunjucksExt()', function() {
+        pit('must create a valid nunjucks extension', function() {
+            var templateBlock = TemplateBlock.create('sayhello', function(block) {
+                return '<p>Hello, World!</p>';
+            });
+
+            // Create a fresh Nunjucks environment
+            var env = new nunjucks.Environment(null, { autoescape: false });
+
+            // Add template block to environement
+            var Ext = templateBlock.toNunjucksExt();
+            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) {
+                expect(res).toBe('<p>Hello, World!</p>');
+            });
+        });
+
+        pit('must apply block arguments correctly', function() {
+            var templateBlock = TemplateBlock.create('sayhello', function(block) {
+                return '<'+block.kwargs.tag+'>Hello, '+block.kwargs.name+'!</'+block.kwargs.tag+'>';
+            });
+
+            // Create a fresh Nunjucks environment
+            var env = new nunjucks.Environment(null, { autoescape: false });
+
+            // Add template block to environement
+            var Ext = templateBlock.toNunjucksExt();
+            env.addExtension(templateBlock.getExtensionName(), new Ext());
+
+            // Render a template using the block
+            var src = '{% sayhello name="Samy", tag="p" %}{% endsayhello %}';
+            return Promise.nfcall(env.renderString.bind(env), src)
+            .then(function(res) {
+                expect(res).toBe('<p>Hello, Samy!</p>');
+            });
+        });
+
+        pit('must handle nested blocks', function() {
+            var templateBlock = new TemplateBlock({
+                name: 'yoda',
+                blocks: Immutable.List(['start', 'end']),
+                process: function(block) {
+                    var nested = {};
+
+                    block.blocks.forEach(function(blk) {
+                        nested[blk.name] = blk.body.trim();
+                    });
+
+                    return '<p class="yoda">'+nested.end+' '+nested.start+'</p>';
+                }
+            });
+
+            // Create a fresh Nunjucks environment
+            var env = new nunjucks.Environment(null, { autoescape: false });
+
+            // Add template block to environement
+            var Ext = templateBlock.toNunjucksExt();
+            env.addExtension(templateBlock.getExtensionName(), new Ext());
+
+            // Render a template using the block
+            var src = '{% yoda %}{% start %}this sentence should be{% end %}inverted{% endyoda %}';
+            return Promise.nfcall(env.renderString.bind(env), src)
+            .then(function(res) {
+                expect(res).toBe('<p class="yoda">inverted this sentence should be</p>');
+            });
+        });
+    });
+});
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