assign tag, abs filter

test/context.js

@@ -6,7 +6,7 @@ var context = require('../context.js');
 
 describe('context', function() {
     var ctx;
-    before(function(){
+    beforeEach(function(){
         ctx = context.factory({
             foo: 'bar',
             bar: ['a', {b: [1, 2]}]
@@ -23,6 +23,11 @@ describe('context', function() {
         ctx.get('foo').should.equal('bar');
     });
 
+    it('should set property', function() {
+        ctx.set('foo', 'FOO');
+        ctx.get('foo').should.equal('FOO');
+    });
+
     it('should get desendent property', function() {
         ctx.get('bar[0]').should.equal('a');
         ctx.get('bar[1].b').should.deep.equal([1, 2]);
@@ -37,6 +42,7 @@ describe('context', function() {
     });
 
     it('should pop context', function() {
+        ctx.push({foo: 'foo', foo1: 'foo1'});
         ctx.pop();
         expect(ctx.get('foo')).to.equal('bar');
         expect(ctx.get('foo1')).to.equal('');

test/render.js

@@ -8,7 +8,7 @@ chai.use(sinonChai);
 var tag = require('../tag.js')();
 var context = require('../context.js');
 var filter = require('../filter')();
-var render = require('../render.js')(filter, tag);
+var render = require('../render.js')(filter, tag).render;
 
 describe('render', function() {
     var ctx, htmlToken, tagToken, filterToken;

test/tags.js

@@ -0,0 +1,19 @@
+const chai = require("chai");
+const expect = chai.expect;
+
+var liquid = require('..')();
+
+var ctx = {
+    foo: 'bar',
+    arr: [-2, 'a']
+};
+
+describe('tags', function() {
+    it('should support assign', function() {
+        test('{% assign foo="bar"%}{{foo}}', 'bar');
+    });
+});
+
+function test(src, dst){
+    expect(liquid.render(src, ctx)).to.equal(dst);
+}