[#1753] Add backward compatibility for tests and warning. Tested agai…

…nst ckanext-harvest/spatial/archiver/qa.

ckan/tests/__init__.py

@@ -0,0 +1,9 @@
+import warnings
+
+warnings.warn(
+    "ckan.tests has been renamed to ckan.tests_legacy. "
+    "In the next release it is planned to remove ckan.tests, and possibly "
+    "rename ckan.new_tests to ckan.tests.",
+    FutureWarning)
+
+from ckan.tests_legacy import *

ckan/tests/functional/__init__.py

@@ -0,0 +1,10 @@
+import warnings
+
+warnings.warn(
+    "ckan.tests has been renamed to ckan.tests_legacy. "
+    "In the next release it is planned to remove ckan.tests, and possibly "
+    "rename ckan.new_tests to ckan.tests.",
+    FutureWarning)
+
+from ckan.tests_legacy.functional import *
+

ckan/tests/functional/api/base.py

@@ -0,0 +1,11 @@
+import warnings
+
+warnings.warn(
+    "ckan.tests has been renamed to ckan.tests_legacy. "
+    "In the next release it is planned to remove ckan.tests, and possibly "
+    "rename ckan.new_tests to ckan.tests.",
+    FutureWarning)
+
+from ckan.tests_legacy.functional.api.base import *
+
+

ckan/tests/functional/base.py

@@ -0,0 +1,9 @@
+import warnings
+
+warnings.warn(
+    "ckan.tests has been renamed to ckan.tests_legacy. "
+    "In the next release it is planned to remove ckan.tests, and possibly "
+    "rename ckan.new_tests to ckan.tests.",
+    FutureWarning)
+
+from ckan.tests_legacy.functional.base import *

ckan/tests_legacy/__init__.py

@@ -46,6 +46,10 @@
            'TestCase',
            'SkipTest',
            'CkanServerCase',
+           'call_action_api',
+           'BaseCase',
+           'here_dir',
+           'conf_dir',
         ]
 
 here_dir = os.path.dirname(os.path.abspath(__file__))