Test translations

test/index.html

@@ -138,7 +138,12 @@
 
     <script src='../locale/locale.js'></script>
     <script src='../locale/en.js'></script>
-
+    <script src='../locale/ja.js'></script>
+    <script src='../locale/fr.js'></script>
+    <script src='../locale/de.js'></script>
+    <script src='../locale/lv.js'></script>
+    <script src='../locale/tr.js'></script>
+    <script src='../locale/es.js'></script>
 
     <script src="spec/spec_helpers.js"></script>
 
@@ -197,6 +202,7 @@
     <script src="spec/oauth.js"></script>
     <script src="spec/taginfo.js"></script>
     <script src="spec/util.js"></script>
+    <script src="spec/translation.js"></script>
 
     <script src="spec/behavior/hash.js"></script>
     <script src="spec/behavior/hover.js"></script>

test/spec/translation.js

@@ -0,0 +1,35 @@
+describe('translations', function() {
+    var languages = [], languageKeys = {};
+
+    function getKeys(lang, keys, prefix) {
+        keys = keys || [];
+        prefix = prefix || '';
+        for (var i in lang) {
+            keys.push(prefix + i);
+            if (typeof lang[i] === 'object') {
+                getKeys(lang[i], keys, i + '.');
+            }
+        }
+        return keys;
+    }
+
+    describe('#translation-differences', function() {
+
+        it('does not differ between languages', function() {
+            languages = _(locale).keys()
+                .without('current', '_current').value();
+
+            languageKeys = _.reduce(languages, function(mem, lang) {
+                 mem[lang] = getKeys(locale[lang]);
+                 return mem;
+            }, {});
+
+            var allkeys = _.flatten(_.values(languageKeys));
+
+            _.forEach(languageKeys, function(l, k) {
+                expect(_.difference(allkeys, l)).to.eql([]);
+            });
+        });
+
+    });
+});