VPNaaS: Reorganize test tree

Similar to what is happening in Neutron, this commit renames and moves unit
test files so that they match the directory structure of the code tree.
Since the VPN repo's test files have imports from Neutron, there are import
changes as well, to the imports to match the Neutron test file organization.

A check script is added to monitor the test file naming and locations (to
ensure consistency).

Change-Id: I875285230127ed660137d271f7e98d82eb57ffab
Partial-Bug: #1440834

neutron_vpnaas/tests/base.py

@@ -15,8 +15,8 @@
 #
 
 from neutron.tests import base as n_base
-from neutron.tests.unit import test_api_v2_extension
-from neutron.tests.unit import test_db_plugin
+from neutron.tests.unit.db import test_db_base_plugin_v2 as test_db_plugin
+from neutron.tests.unit.extensions import base as test_api_v2_extension
 
 
 class BaseTestCase(n_base.BaseTestCase):

neutron_vpnaas/tests/unit/db/vpn/test_vpn_db.py

@@ -30,8 +30,8 @@ from neutron import manager
 from neutron.openstack.common import uuidutils
 from neutron.plugins.common import constants
 from neutron.scheduler import l3_agent_scheduler
-from neutron.tests.unit import test_db_plugin
-from neutron.tests.unit import test_l3_plugin
+from neutron.tests.unit.db import test_db_base_plugin_v2 as test_db_plugin
+from neutron.tests.unit.extensions import test_l3 as test_l3_plugin
 from oslo_config import cfg
 import webob.exc
 
@@ -433,7 +433,7 @@ class VPNPluginDbTestCase(VPNTestMixin,
 
         service_plugins = {'vpnaas_plugin': vpnaas_plugin}
         plugin_str = ('neutron_vpnaas.tests.unit.db.vpn.'
-                      'test_db_vpnaas.TestVpnCorePlugin')
+                      'test_vpn_db.TestVpnCorePlugin')
 
         super(VPNPluginDbTestCase, self).setUp(
             plugin_str,

neutron_vpnaas/tests/unit/extensions/test_vpnaas.py

@@ -17,7 +17,7 @@ import copy
 import mock
 from neutron.openstack.common import uuidutils
 from neutron.plugins.common import constants
-from neutron.tests.unit import test_api_v2
+from neutron.tests.unit.api.v2 import test_base as test_api_v2
 from webob import exc
 
 from neutron_vpnaas.extensions import vpnaas

neutron_vpnaas/tests/unit/services/vpn/test_plugin.py

@@ -19,12 +19,12 @@ from neutron.common import constants
 from neutron import context
 from neutron import manager
 from neutron.plugins.common import constants as p_constants
-from neutron.tests.unit.openvswitch import test_agent_scheduler
-from neutron.tests.unit import test_agent_ext_plugin
+from neutron.tests.unit.extensions import test_agent as test_agent_ext_plugin
+from neutron.tests.unit.plugins.openvswitch import test_agent_scheduler
 
 from neutron_vpnaas.db.vpn import vpn_validator
 from neutron_vpnaas.services.vpn.service_drivers import ipsec as ipsec_driver
-from neutron_vpnaas.tests.unit.db.vpn import test_db_vpnaas
+from neutron_vpnaas.tests.unit.db.vpn import test_vpn_db as test_db_vpnaas
 
 FAKE_HOST = test_agent_ext_plugin.L3_HOSTA
 VPN_DRIVER_CLASS = 'neutron_vpnaas.services.vpn.plugin.VPNDriverPlugin'

tools/check_bash.sh

@@ -22,7 +22,7 @@
 
 # Ignore comments, but include shebangs
 OBSERVED=$(grep -E '^([^#]|#!).*bash' tox.ini tools/* | wc -l)
-EXPECTED=5
+EXPECTED=6
 if [ ${EXPECTED} -ne ${OBSERVED} ]; then
     echo Unexpected number of bash usages are detected.
     echo Please read the comment in $0

tools/check_unit_test_structure.sh

@@ -0,0 +1,52 @@
+#!/usr/bin/env bash
+
+# This script identifies the unit test modules that do not correspond
+# directly with a module in the code tree.  See TESTING.rst for the 
+# intended structure.
+
+neutron_path=$(cd "$(dirname "$0")/.." && pwd)
+base_test_path=neutron_vpnaas/tests/unit
+test_path=$neutron_path/$base_test_path
+
+test_files=$(find ${test_path} -iname 'test_*.py')
+
+ignore_regexes=(
+    "^plugins.*$"
+)
+
+error_count=0
+ignore_count=0
+total_count=0
+for test_file in ${test_files[@]}; do
+    relative_path=${test_file#$test_path/}
+    expected_path=$(dirname $neutron_path/neutron_vpnaas/$relative_path)
+    test_filename=$(basename "$test_file")
+    expected_filename=${test_filename#test_}
+    # Module filename (e.g. foo/bar.py -> foo/test_bar.py)
+    filename=$expected_path/$expected_filename
+    # Package dir (e.g. foo/ -> test_foo.py)
+    package_dir=${filename%.py}
+    if [ ! -f "$filename" ] && [ ! -d "$package_dir" ]; then
+        for ignore_regex in ${ignore_regexes[@]}; do
+            if [[ "$relative_path" =~ $ignore_regex ]]; then
+                ((ignore_count++))
+                continue 2
+            fi
+        done
+        echo "Unexpected test file: $base_test_path/$relative_path"
+        ((error_count++))
+    fi
+    ((total_count++))
+done
+
+if [ "$ignore_count" -ne 0 ]; then
+    echo "$ignore_count unmatched test modules were ignored"
+fi
+
+if [ "$error_count" -eq 0 ]; then
+    echo 'Success!  All test modules match targets in the code tree.'
+    exit 0
+else
+    echo "Failure! $error_count of $total_count test modules do not match targets in the code tree."
+    exit 1
+fi

tox.ini

@@ -60,8 +60,7 @@ commands =
   sh ./tools/check_bash.sh
   flake8
   pylint --rcfile=.pylintrc --output-format=colorized {posargs:neutron_vpnaas}
-  #neutron-db-manage check_migration
-  #sh -c "find neutron-vpnaas -type f -regex '.*\.pot?' -print0|xargs -0 -n 1 msgfmt --check-format -o /dev/null"
+  {toxinidir}/tools/check_unit_test_structure.sh
 whitelist_externals = sh
 
 [testenv:i18n]