[1.1.X] Fixed #12910 - Only test extracting translation strings if xgettext can be found on PATH.

Backport from r12475.

git-svn-id: http://code.djangoproject.com/svn/django/branches/releases/1.1.X@12589 bcc190cf-cafb-0310-a4f2-bffc1f526a37

tests/regressiontests/makemessages/extraction.py

@@ -0,0 +1,42 @@
+import os
+import re
+import shutil
+from django.test import TestCase
+from django.core import management
+
+LOCALE='de'
+
+class ExtractorTests(TestCase):
+
+    def setUp(self):
+        self._cwd = os.getcwd()
+        self.test_dir = os.path.abspath(os.path.dirname(__file__))
+
+    def _rmrf(self, dname):
+        if os.path.commonprefix([self.test_dir, os.path.abspath(dname)]) != self.test_dir:
+            return
+        shutil.rmtree(dname)
+
+    def tearDown(self):
+        os.chdir(self.test_dir)
+        try:
+            self._rmrf('locale/%s' % LOCALE)
+        except OSError:
+            pass
+        os.chdir(self._cwd)
+
+    def assertMsgId(self, msgid, s):
+        return self.assert_(re.search('^msgid "%s"' % msgid, s, re.MULTILINE))
+
+
+class JavascriptExtractorTests(ExtractorTests):
+
+    PO_FILE='locale/%s/LC_MESSAGES/djangojs.po' % LOCALE
+
+    def test_javascript_literals(self):
+        os.chdir(self.test_dir)
+        management.call_command('makemessages', domain='djangojs', locale=LOCALE, verbosity=0)
+        self.assert_(os.path.exists(self.PO_FILE))
+        po_contents = open(self.PO_FILE, 'r').read()
+        self.assertMsgId('This literal should be included.', po_contents)
+        self.assertMsgId('This one as well.', po_contents)