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diff --git a/azure/aria/aria-extension-cloudify/src/aria/tests/orchestrator/workflows/executor/test_executor.py b/azure/aria/aria-extension-cloudify/src/aria/tests/orchestrator/workflows/executor/test_executor.py
new file mode 100644
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--- /dev/null
+++ b/azure/aria/aria-extension-cloudify/src/aria/tests/orchestrator/workflows/executor/test_executor.py
@@ -0,0 +1,149 @@
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.
+# The ASF licenses this file to You 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.
+
+
+import pytest
+import retrying
+
+try:
+    import celery as _celery
+    app = _celery.Celery()
+    app.conf.update(CELERY_RESULT_BACKEND='amqp://')
+except ImportError:
+    _celery = None
+    app = None
+
+import aria
+from aria.modeling import models
+from aria.orchestrator import events
+from aria.orchestrator.workflows.executor import (
+    thread,
+    process,
+    # celery
+)
+
+import tests
+from . import MockContext
+
+
+def _get_function(func):
+    return '{module}.{func.__name__}'.format(module=__name__, func=func)
+
+
+def execute_and_assert(executor, storage=None):
+    expected_value = 'value'
+    successful_task = MockContext(
+        storage, task_kwargs=dict(function=_get_function(mock_successful_task))
+    )
+    failing_task = MockContext(
+        storage, task_kwargs=dict(function=_get_function(mock_failing_task))
+    )
+    task_with_inputs = MockContext(
+        storage,
+        task_kwargs=dict(function=_get_function(mock_task_with_input),
+                         arguments={'input': models.Argument.wrap('input', 'value')})
+    )
+
+    for task in [successful_task, failing_task, task_with_inputs]:
+        executor.execute(task)
+
+    @retrying.retry(stop_max_delay=10000, wait_fixed=100)
+    def assertion():
+        assert successful_task.states == ['start', 'success']
+        assert failing_task.states == ['start', 'failure']
+        assert task_with_inputs.states == ['start', 'failure']
+        assert isinstance(failing_task.exception, MockException)
+        assert isinstance(task_with_inputs.exception, MockException)
+        assert task_with_inputs.exception.message == expected_value
+    assertion()
+
+
+def test_thread_execute(thread_executor):
+    execute_and_assert(thread_executor)
+
+
+def test_process_execute(process_executor, storage):
+    execute_and_assert(process_executor, storage)
+
+
+def mock_successful_task(**_):
+    pass
+
+
+def mock_failing_task(**_):
+    raise MockException
+
+
+def mock_task_with_input(input, **_):
+    raise MockException(input)
+
+if app:
+    mock_successful_task = app.task(mock_successful_task)
+    mock_failing_task = app.task(mock_failing_task)
+    mock_task_with_input = app.task(mock_task_with_input)
+
+
+class MockException(Exception):
+    pass
+
+
+@pytest.fixture
+def storage(tmpdir):
+    _storage = aria.application_model_storage(aria.storage.sql_mapi.SQLAlchemyModelAPI,
+                                              initiator_kwargs=dict(base_dir=str(tmpdir)))
+    yield _storage
+    tests.storage.release_sqlite_storage(_storage)
+
+
+@pytest.fixture(params=[
+    (thread.ThreadExecutor, {'pool_size': 1}),
+    (thread.ThreadExecutor, {'pool_size': 2}),
+    # subprocess needs to load a tests module so we explicitly add the root directory as if
+    # the project has been installed in editable mode
+    # (celery.CeleryExecutor, {'app': app})
+])
+def thread_executor(request):
+    executor_cls, executor_kwargs = request.param
+    result = executor_cls(**executor_kwargs)
+    yield result
+    result.close()
+
+
+@pytest.fixture
+def process_executor():
+    result = process.ProcessExecutor(python_path=tests.ROOT_DIR)
+    yield result
+    result.close()
+
+
+@pytest.fixture(autouse=True)
+def register_signals():
+    def start_handler(task, *args, **kwargs):
+        task.states.append('start')
+
+    def success_handler(task, *args, **kwargs):
+        task.states.append('success')
+
+    def failure_handler(task, exception, *args, **kwargs):
+        task.states.append('failure')
+        task.exception = exception
+
+    events.start_task_signal.connect(start_handler)
+    events.on_success_task_signal.connect(success_handler)
+    events.on_failure_task_signal.connect(failure_handler)
+    yield
+    events.start_task_signal.disconnect(start_handler)
+    events.on_success_task_signal.disconnect(success_handler)
+    events.on_failure_task_signal.disconnect(failure_handler)