zjsunit: Add i18n minimal lib.

frontend_tests/zjsunit/i18n.js

@@ -0,0 +1,23 @@
+var i18n = {};
+
+i18n.t = function (str, context) {
+    // We are currently assuming that we will recieve context in form of a Dict
+    // of key value pairs and string will be having substitution for keywords
+    // like these "__keyword__".
+    if (context === undefined) {
+        return str;
+    }
+    var keyword_regex = /__(\w)+__/g;
+    var keys_in_str = str.match(keyword_regex);
+    var keywords = _.map(keys_in_str, function (key) {
+        return key.slice(2, key.length - 2);
+    });
+    _.each(keywords, function (keyword) {
+        str = str.replace('__' + keyword + '__', context[keyword]);
+    });
+    return 'translated: ' + str;
+};
+
+i18n.ensure_i18n = function (f) { f(); };
+
+module.exports = i18n;

frontend_tests/zjsunit/index.js

@@ -42,6 +42,9 @@ global.append_test_output = output.append_test_output;
 // Set up fake jQuery
 global.make_zjquery = require('./zjquery.js').make_zjquery;
 
+// Set up fake translation
+global.i18n = require('./i18n.js');
+
 var noop = function () {};
 
 output.start_writing();