Fix failing after refactoring CLI test for execution

After refactoring tests need to wait a little bit more time before
execution will be in 'SUCCESS' state, that's why it was needed to add
extra method that will check execution state and wait for 'Success'.

Change-Id: I4c85d227c171d4b819dd288a00c7fb32258f11ba
Closes-Bug: #1435263

mistralclient/tests/functional/cli/v2/base_v2.py

@@ -13,6 +13,9 @@
 # under the License.
 
 import os
+import time
+
+from tempest_lib import exceptions
 
 from mistralclient.tests.functional.cli import base
 
@@ -161,3 +164,29 @@ class MistralClientTestBase(base.MistralCLIAuth, base.MistralCLIAltAuth):
         f.write(file_body)
         f.close()
         self.addCleanup(os.remove, file_name)
+
+    def wait_execution_success(self, exec_id, timeout=180):
+        start_time = time.time()
+
+        ex = self.mistral_admin('execution-get', params=exec_id)
+        exec_state = self.get_value_of_field(ex, 'State')
+
+        expected_states = ['SUCCESS', 'RUNNING']
+
+        while exec_state != 'SUCCESS':
+            if time.time() - start_time > timeout:
+                msg = ("Execution exceeds timeout {0} to change state "
+                       "to SUCCESS. Execution: {1}".format(timeout, ex))
+                raise exceptions.TimeoutException(msg)
+
+            ex = self.mistral_admin('execution-get', params=exec_id)
+            exec_state = self.get_value_of_field(ex, 'State')
+
+            if exec_state not in expected_states:
+                msg = ("Execution state %s is not in expected "
+                       "states: %s" % (exec_state, expected_states))
+                raise exceptions.TempestException(msg)
+
+            time.sleep(2)
+
+        return True

mistralclient/tests/functional/cli/v2/cli_tests_v2.py

@@ -301,10 +301,8 @@ class ExecutionCLITests(base_v2.MistralClientTestBase):
             "%s input task_name" % self.reverse_wf['Name'])
         exec_id = self.get_value_of_field(execution, 'ID')
 
-        execution = self.mistral_admin(
+        result = self.wait_execution_success(exec_id)
-            'execution-get', params=exec_id)
+        self.assertTrue(result)
-        exec_state = self.get_value_of_field(execution, 'State')
-        self.assertEqual('SUCCESS', exec_state)
 
     def test_execution_update(self):
         execution = self.execution_create(self.direct_wf['Name'])