Added basic tests for template backends.

tests/template_backends/test_jinja2.py

@@ -0,0 +1,26 @@
+import sys
+
+from unittest import skipIf
+
+# Jinja2 doesn't run on Python 3.2 because it uses u-prefixed unicode strings.
+if sys.version_info[:2] == (2, 7) or sys.version_info[:2] >= (3, 3):
+    try:
+        import jinja2
+    except ImportError:
+        jinja2 = None
+        Jinja2 = None
+    else:
+        from django.template.backends.jinja2 import Jinja2
+else:
+    jinja2 = None
+    Jinja2 = None
+
+from .test_dummy import TemplateStringsTests
+
+
+@skipIf(jinja2 is None, "this test requires jinja2")
+class Jinja2Tests(TemplateStringsTests):
+
+    engine_class = Jinja2
+    backend_name = 'jinja2'
+    options = {'keep_trailing_newline': True}