Add positive tests for os-floating-ip-pools

List floating ip pools.

Change-Id: Ia7d33a61c7227b72e04f34660fcff4ce916ead79
diff --git a/tempest/api/compute/floating_ips/test_list_floating_ips.py b/tempest/api/compute/floating_ips/test_list_floating_ips.py
index e380334..acb1f5c 100644
--- a/tempest/api/compute/floating_ips/test_list_floating_ips.py
+++ b/tempest/api/compute/floating_ips/test_list_floating_ips.py
@@ -93,6 +93,14 @@
         self.assertRaises(exceptions.NotFound,
                           self.client.get_floating_ip_details, non_exist_id)
 
+    @attr(type='gate')
+    def test_list_floating_ip_pools(self):
+        # Positive test:Should return the list of floating IP Pools
+        resp, floating_ip_pools = self.client.list_floating_ip_pools()
+        self.assertEqual(200, resp.status)
+        self.assertNotEqual(0, len(floating_ip_pools),
+                            "Expected floating IP Pools. Got zero.")
+
 
 class FloatingIPDetailsTestXML(FloatingIPDetailsTestJSON):
     _interface = 'xml'
diff --git a/tempest/services/compute/json/floating_ips_client.py b/tempest/services/compute/json/floating_ips_client.py
index 27733ac..6963113 100644
--- a/tempest/services/compute/json/floating_ips_client.py
+++ b/tempest/services/compute/json/floating_ips_client.py
@@ -94,3 +94,13 @@
         except exceptions.NotFound:
             return True
         return False
+
+    def list_floating_ip_pools(self, params=None):
+        """Returns a list of all floating IP Pools."""
+        url = 'os-floating-ip-pools'
+        if params:
+            url += '?%s' % urllib.urlencode(params)
+
+        resp, body = self.get(url)
+        body = json.loads(body)
+        return resp, body['floating_ip_pools']
diff --git a/tempest/services/compute/xml/floating_ips_client.py b/tempest/services/compute/xml/floating_ips_client.py
index 278cc88..2fffaa2 100644
--- a/tempest/services/compute/xml/floating_ips_client.py
+++ b/tempest/services/compute/xml/floating_ips_client.py
@@ -107,3 +107,13 @@
         except exceptions.NotFound:
             return True
         return False
+
+    def list_floating_ip_pools(self, params=None):
+        """Returns a list of all floating IP Pools."""
+        url = 'os-floating-ip-pools'
+        if params:
+            url += '?%s' % urllib.urlencode(params)
+
+        resp, body = self.get(url, self.headers)
+        body = self._parse_array(etree.fromstring(body))
+        return resp, body