add test for .po files with no header

Author: Alex Petty

lib/parse.js

@@ -66,7 +66,9 @@ module.exports = function(buffer, options) {
   });
 
   // Attach headers (overwrites any empty translation keys that may have somehow gotten in)
-  result[''] = parsed.headers;
+  if (parsed.headers) {
+    result[''] = parsed.headers;
+  }
 
   if (options.format === 'mf') {
     delete result[''];

test/fixtures/en-no-header.json

@@ -0,0 +1,6 @@
+{
+   "Hello World": [
+      null,
+      "Hello World"
+   ]
+}

test/fixtures/en-no-header.po

@@ -0,0 +1,4 @@
+# Very minimal .po
+
+msgid "Hello World"
+msgstr "Hello World"

test/po2json_test.js

@@ -128,3 +128,17 @@ module.exports["parse with Plural-Forms == nplurals=1; plural=0;"] = {
     test.done();
   }
 }
+
+module.exports["parse with no headers"] ={
+  setUp: function(callback){
+    this.po = fs.readFileSync(__dirname + "/fixtures/en-no-header.po");
+    this.json = JSON.parse(fs.readFileSync(__dirname + "/fixtures/en-no-header.json", "utf-8"));
+    callback();
+  },
+
+  parse: function(test){
+    var parsed = po2json.parse(this.po);
+    test.deepEqual(parsed, this.json);
+    test.done();
+  }
+}