Compute API Hosts Tests.

Adds tests for compute hosts API.

Change-Id: I9478d64eca8854fe442a311eb1bab700ce75a1a2
Partially-Implements: blueprint initial-tests-compute
Co-Authored-By: Chi Lo <cl566n@att.com>
Co-Authored-By: Michael Sliem <ms272s@att.com>
diff --git a/patrole_tempest_plugin/tests/api/compute/test_hosts_rbac.py b/patrole_tempest_plugin/tests/api/compute/test_hosts_rbac.py
new file mode 100644
index 0000000..d74a78e
--- /dev/null
+++ b/patrole_tempest_plugin/tests/api/compute/test_hosts_rbac.py
@@ -0,0 +1,50 @@
+#    Copyright 2017 AT&T Corporation.
+#    All Rights Reserved.
+#
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+#    under the License.
+
+from tempest import config
+from tempest.lib import decorators
+
+from patrole_tempest_plugin import rbac_rule_validation
+from patrole_tempest_plugin.rbac_utils import rbac_utils
+from patrole_tempest_plugin.tests.api.compute import rbac_base
+
+CONF = config.CONF
+
+
+class HostsAdminRbacTest(rbac_base.BaseV2ComputeAdminRbacTest):
+
+    @classmethod
+    def setup_clients(cls):
+        super(HostsAdminRbacTest, cls).setup_clients()
+        cls.client = cls.os.hosts_client
+
+    @classmethod
+    def skip_checks(cls):
+        super(HostsAdminRbacTest, cls).skip_checks()
+        if not CONF.compute_feature_enabled.api_extensions:
+            raise cls.skipException(
+                '%s skipped as no compute extensions enabled' % cls.__name__)
+
+    def tearDown(self):
+        rbac_utils.switch_role(self, switchToRbacRole=False)
+        super(HostsAdminRbacTest, self).tearDown()
+
+    @decorators.idempotent_id('035b7935-2fae-4218-8d37-27fa83097494')
+    @rbac_rule_validation.action(
+        service="nova",
+        rule="os_compute_api:os-hosts")
+    def test_list_hosts(self):
+        rbac_utils.switch_role(self, switchToRbacRole=True)
+        self.client.list_hosts()['hosts']