Makes health return True or False

API returns a 204 for the health check with no body content.
The function should have returned  True if http result was a 204,
or else a False.

I solved the problem by making the function return false in case of an
error.

Change-Id: I02771f5aa61db4ed83da952245744cb3a6163a26
Closes-bug: #1288986

tests/unit/queues/v1/test_client.py

@@ -20,7 +20,7 @@ import ddt
 from zaqarclient.queues import client
 from zaqarclient.queues.v1 import core
 from zaqarclient.tests import base
-from zaqarclient.transport import response
+from zaqarclient.transport import errors
 
 VERSIONS = [1, 1.1]
 
@@ -35,10 +35,21 @@ class TestClient(base.TestBase):
         self.assertIsNotNone(cli.transport())
 
     @ddt.data(*VERSIONS)
-    def test_health(self, version):
+    def test_health_ok(self, version):
         cli = client.Client('http://example.com',
                             version, {})
         with mock.patch.object(core, 'health', autospec=True) as core_health:
-            resp = response.Response(None, None)
-            core_health.return_value = resp
-            self.assertIsNotNone(cli.health())
+            core_health.return_value = None
+            self.assertTrue(cli.health())
+
+    @ddt.data(*VERSIONS)
+    def test_health_bad(self, version):
+        cli = client.Client('http://example.com',
+                            version, {})
+
+        def raise_error(*args, **kwargs):
+            raise errors.ServiceUnavailableError()
+
+        with mock.patch.object(core, 'health', autospec=True) as core_health:
+            core_health.side_effect = raise_error
+            self.assertFalse(cli.health())

zaqarclient/queues/v1/client.py

@@ -23,6 +23,7 @@ from zaqarclient.queues.v1 import iterator
 from zaqarclient.queues.v1 import pool
 from zaqarclient.queues.v1 import queues
 from zaqarclient import transport
+from zaqarclient.transport import errors
 from zaqarclient.transport import request
 
 
@@ -160,4 +161,8 @@ class Client(object):
     def health(self):
         """Gets the health status of Zaqar server."""
         req, trans = self._request_and_transport()
-        return core.health(trans, req)
+        try:
+            core.health(trans, req)
+            return True
+        except errors.ServiceUnavailableError:
+            return False