add test for data

lib/Template.js

@@ -54,7 +54,7 @@ Template.prototype.run = function run() {
     this.getScript(function(err, script) {
         if(err) return self.emit(err);
         try {
-            script(print, include);
+            script(print, include, self.data());
         }
         catch(e) {
             self.emit('error', e);

test/templates/data.tpl

@@ -0,0 +1 @@
+<%= data.str %>

test/test-20-data.js

@@ -0,0 +1,15 @@
+var Sink = require('./sink');
+var blue = require('../');
+
+exports.testOneFile = function(test) {
+    var sink = Sink();
+    var t = new blue.Template(__dirname + '/templates/data.tpl');
+    t.data({
+        str: "hello world!"
+    })
+    t.pipe(sink).on('data', function(data) {
+        test.equal(data.trim(), 'hello world!', "sink data should be identical");
+        test.done();
+    });
+}
+