updated integration tests

.pre-commit-config.yaml

@@ -58,4 +58,4 @@ repos:
       rev: 'v2.6'
       hooks:
       - id: vulture
-        entry: vulture . --min-confidence 90 --exclude */.venv/*.py
+        entry: vulture . --min-confidence 90 --exclude */.venv/*.py,*/tests/*.py

shared/datastore/src/get_image.py

@@ -2,13 +2,14 @@
 
 import logging
 import os
-from io import BytesIO
 
 from minio import Minio
 from PIL import Image
 
 from shared.utils import check_env
 
+from .get import get
+
 
 def get_image(
     client: Minio,
@@ -23,19 +24,11 @@ def get_image(
     bucket_name = str(os.getenv('MINIO_BUCKET_NAME'))
     object_name = f'images/{object_name}'
     # get object from bucket
-    try:
-        response = client.get_object(
+    buffer = get(
+        client=client,
         bucket_name=bucket_name,
         object_name=object_name,
     )
-        buffer = BytesIO(response.data)
-    except Exception as exc:
-        logging.error('failed getting data from MinIO')
-        raise exc
-    finally:
-        response.close()
-        response.release_conn()
-    buffer.seek(0)
     # convert data to image
     image = Image.open(buffer)
     logging.debug('got data from %s', object_name)

shared/datastore/src/get_model.py

@@ -3,13 +3,14 @@
 import logging
 import os
 from collections import OrderedDict
-from io import BytesIO
 
 import torch
 from minio import Minio
 
 from shared.utils import check_env
 
+from .get import get
+
 
 def get_model(
     client: Minio,
@@ -20,24 +21,16 @@ def get_model(
     assert isinstance(object_name, str)
     assert len(object_name) > 0
     # prepare arguments
-    check_env({'MINIO_BUCKET_NAME_MODELS'})
-    bucket_name = str(os.getenv('MINIO_BUCKET_NAME_MODELS'))
+    check_env({'MINIO_BUCKET_NAME'})
+    bucket_name = str(os.getenv('MINIO_BUCKET_NAME'))
     object_name = f'models/{object_name}'
     # get object from bucket
-    try:
-        response = client.get_object(
+    buffer = get(
+        client=client,
         bucket_name=bucket_name,
         object_name=object_name,
     )
-        buffer = BytesIO(response.data)
-    except Exception as exc:
-        logging.error('failed getting data from MinIO')
-        raise exc
-    finally:
-        response.close()
-        response.release_conn()
     # convert data to model checkpoint
-    buffer.seek(0)
     model_content = torch.load(buffer)
     logging.debug('finished')
     return model_content

shared/datastore/src/put_image.py

@@ -22,14 +22,13 @@ def put_image(
     # get bucket name from env
     bucket_name = os.getenv('MINIO_BUCKET_NAME', default='')
     assert len(bucket_name) > 0
-    # save image to buffer
+    # save data to buffer
     buffer = BytesIO()
     image.save(buffer, 'png')
     # get md5 of buffer
     checksum = md5(buffer.getbuffer()).hexdigest()
-    # determine object name
-    subfolder = 'images'
-    object_name = f'{subfolder}/{checksum}'
+    # set object name
+    object_name = f'images/{checksum}'
     # send data to bucket
     put(
         client=client,

shared/datastore/src/put_model.py

@@ -9,6 +9,10 @@ import torch
 from minio import Minio
 from torch.nn import Module
 
+from shared.utils import check_env
+
+from .put import put
+
 
 def put_model(
     client: Minio,
@@ -18,28 +22,22 @@ def put_model(
     used as object name."""
     assert isinstance(client, Minio)
     assert isinstance(model, Module)
-    bucket_name = os.getenv('MINIO_BUCKET_NAME', default='')
-    assert len(bucket_name) > 0
-    subfolder = 'models'
-    # save image to buffer
+    # get bucket name from env
+    check_env({'MINIO_BUCKET_NAME'})
+    bucket_name = str(os.getenv('MINIO_BUCKET_NAME'))
+    # save data to buffer
     buffer = BytesIO()
     torch.save(model.state_dict(), buffer)
     # get md5 of image
     checksum = md5(buffer.getbuffer()).hexdigest()
-    # prepare for saving
-    num_bytes = buffer.tell()
-    buffer.seek(0)
+    # set object name
+    object_name = f'models/{checksum}'
     # send data to bucket
-    object_name = f'{subfolder}/{checksum}'
-    try:
-        client.put_object(
+    put(
+        client=client,
+        buffer=buffer,
         bucket_name=bucket_name,
         object_name=object_name,
-            length=num_bytes,
-            data=buffer,
     )
-    except Exception as exc:
-        logging.error('failed saving data to MinIO')
-        raise exc
-    logging.debug('saved data to %s', object_name)
+    logging.debug('finished')
     return checksum

shared/datastore/tests/integration/base_crud_test.py

@@ -0,0 +1,77 @@
+"""Integration tests related to base CRUD functions."""
+
+from io import BytesIO
+
+import pytest
+
+from shared.datastore import connect_minio, delete, get, put
+
+
+def test_should_get_data(
+    data_in_minio,
+):
+    data, bucket_name, object_name = data_in_minio
+    client = connect_minio()
+    received_data = get(
+        client=client,
+        bucket_name=bucket_name,
+        object_name=object_name,
+    )
+    assert isinstance(data, BytesIO)
+    assert received_data == data
+
+
+def test_should_delete_data(
+    data_in_minio,
+):
+    _, bucket_name, object_name = data_in_minio
+    client = connect_minio()
+    delete(
+        client=client,
+        bucket_name=bucket_name,
+        object_name=object_name,
+    )
+    with pytest.raises(ValueError):
+        _ = get(
+            client=client,
+            bucket_name=bucket_name,
+            object_name=object_name,
+        )
+
+
+def test_should_put_data(
+    data,
+):
+    buffer, bucket_name, object_name = data
+    client = connect_minio()
+    put(
+        client=client,
+        buffer=buffer,
+        bucket_name=bucket_name,
+        object_name=object_name,
+    )
+    received_data = get(
+        client=client,
+        bucket_name=bucket_name,
+        object_name=object_name,
+    )
+    assert received_data == data
+
+
+def test_should_update_data(
+    data_in_minio,
+):
+    buffer, bucket_name, object_name = data_in_minio
+    client = connect_minio()
+    put(
+        client=client,
+        buffer=buffer,
+        bucket_name=bucket_name,
+        object_name=object_name,
+    )
+    received_data = get(
+        client=client,
+        bucket_name=bucket_name,
+        object_name=object_name,
+    )
+    assert received_data == buffer

shared/datastore/tests/integration/conftest.py

@@ -0,0 +1,78 @@
+"""Integration test configurations."""
+
+import os
+
+import pytest
+from PIL import Image
+from testcontainers.minio import MinioContainer
+
+env_var_map = {
+    'MINIO_ENDPOINT': 'localhost:9000',
+    'MINIO_ACCESS_KEY': 'test-access-key',
+    'MINIO_SECRET_KEY': 'test-secret-key',
+    'MINIO_BUCKET_NAME': 'test-bucket',
+}
+container_map = {
+    'minio': MinioContainer(
+        port=env_var_map['MINIO_ENDPOINT'].rsplit(':', maxsplit=1)[-1],
+        access_key=env_var_map['MINIO_ACCESS_KEY'],
+        secret_key=env_var_map['MINIO_SECRET_KEY'],
+    ),
+}
+
+
+@pytest.fixture(scope='session', autouse=True)
+def setup_infrastructure(request: pytest.FixtureRequest) -> None:
+    """Prepare infrastructure for integration test."""
+    # prepare infrastructure
+    for container in container_map.values():
+        container.start()
+    # update env var map
+    minio_host = container_map['minio'].get_container_host_ip()
+    minio_port = container_map['minio'].get_exposed_port(9000)
+    env_var_map['MINIO_ENDPOINT'] = f'{minio_host}:{minio_port}'
+
+    # ensure cleanup
+    def cleanup_infrastructure():
+        for container in container_map.values():
+            container.stop()
+
+    request.addfinalizer(cleanup_infrastructure)
+
+
+@pytest.fixture(scope='session', autouse=True)
+def populate_env(
+    request: pytest.FixtureRequest,
+    setup_infrastructure,
+) -> None:
+    """Populate environment with variables used for testing."""
+    # update env
+    for key, val in env_var_map.items():
+        os.environ[key] = val
+
+    # ensure cleanup
+    def cleanup_env():
+        for key in env_var_map:
+            _ = os.environ.pop(key, default=None)
+
+    request.addfinalizer(cleanup_env)
+
+
+@pytest.fixture
+def image() -> Image.Image:
+    # generate image
+    image = Image.new(mode='RGB', size=(480, 480))
+    # expose image
+    yield image
+
+
+# @pytest.fixture
+# def image_in_minio(
+#     image: Image.Image,
+# ) -> tuple(Image.Image, str):
+#     #
+
+
+#     # expose image and object name
+#     yield image, object_name
+#     # cleanup

shared/datastore/tests/integration/connect_test.py

@@ -0,0 +1,10 @@
+"""Integration test for connect_minio function."""
+
+from minio import Minio
+
+from shared.datastore import connect_minio
+
+
+def test_should_return_correct_type():
+    client = connect_minio()
+    assert isinstance(client, Minio)

shared/datastore/tests/integration/image_crud_test.py

@@ -0,0 +1,53 @@
+"""Integration tests related to image CRUD."""
+
+from PIL import Image
+
+from shared.datastore import connect_minio, get_image, put_image
+
+
+def test_should_get_image(
+    image_in_minio,
+):
+    image, object_name = image_in_minio
+    client = connect_minio()
+    received_image = get_image(
+        client=client,
+        object_name=object_name,
+    )
+    assert isinstance(image, Image.Image)
+    assert received_image == image
+
+
+def test_should_put_image(
+    image,
+):
+    client = connect_minio()
+    object_name = put_image(
+        client=client,
+        image=image,
+    )
+    assert isinstance(object_name, str)
+    assert len(object_name) > 0
+    received_image = get_image(
+        client=client,
+        object_name=object_name,
+    )
+    assert received_image == image
+
+
+def test_should_update_image(
+    image_in_minio,
+):
+    image, object_name = image_in_minio
+    client = connect_minio()
+    object_name = put_image(
+        client=client,
+        image=image,
+    )
+    assert isinstance(object_name, str)
+    assert len(object_name) > 0
+    received_image = get_image(
+        client=client,
+        object_name=object_name,
+    )
+    assert received_image == image

shared/datastore/tests/integration/model_crud_test.py

@@ -0,0 +1,53 @@
+"""Integration tests related to model CRUD."""
+
+from torch.nn import Module
+
+from shared.datastore import connect_minio, get_model, put_model
+
+
+def test_should_get_model(
+    model_in_minio,
+):
+    model, object_name = model_in_minio
+    client = connect_minio()
+    received_model = get_model(
+        client=client,
+        object_name=object_name,
+    )
+    assert isinstance(model, Module)
+    assert received_model == model
+
+
+def test_should_put_model(
+    model,
+):
+    client = connect_minio()
+    object_name = put_model(
+        client=client,
+        model=model,
+    )
+    assert isinstance(object_name, str)
+    assert len(object_name) > 0
+    received_model = get_model(
+        client=client,
+        object_name=object_name,
+    )
+    assert received_model == model
+
+
+def test_should_update_model(
+    model_in_minio,
+):
+    model, object_name = model_in_minio
+    client = connect_minio()
+    object_name = put_model(
+        client=client,
+        model=model,
+    )
+    assert isinstance(object_name, str)
+    assert len(object_name) > 0
+    received_model = get_model(
+        client=client,
+        object_name=object_name,
+    )
+    assert received_model == model

shared/datastore/tests/integration_test.py

@@ -1,110 +0,0 @@
-"""Integration tests for functions exposed by the datastore module."""
-
-import os
-from io import BytesIO
-from random import randbytes
-
-import pytest
-from minio import Minio
-from testcontainers.minio import MinioContainer
-
-from shared.datastore import connect_minio, get, put
-from shared.utils import setup_logging
-
-MINIO_BUCKET_NAME = 'test-bucket'
-minio = MinioContainer()
-
-
-@pytest.fixture(scope='module', autouse=True)
-def setup(request: pytest.FixtureRequest):
-    """Setup function for datastore module integration tests."""
-    # start minio
-    minio.start()
-
-    # ensure minio is stopped after testing
-    def remove_container():
-        minio.stop()
-
-    request.addfinalizer(remove_container)
-    # extract information
-    minio_ip = minio.get_container_host_ip()
-    minio_port = minio.get_exposed_port(port=9000)
-    os.environ['MINIO_ENDPOINT'] = f'{minio_ip}:{minio_port}'
-    os.environ['MINIO_ACCESS_KEY'] = minio.access_key
-    os.environ['MINIO_SECRET_KEY'] = minio.secret_key
-    os.environ['MINIO_BUCKET_NAME'] = MINIO_BUCKET_NAME
-
-
-def test_connect_minio():
-    """Test function connect_minio."""
-    minio_client = connect_minio()
-    assert isinstance(minio_client, Minio)
-
-
-def test_put():
-    """Test function put."""
-    # connect to minio
-    minio_client = connect_minio()
-    # generate random bytes
-    buffer = BytesIO(randbytes(2**20))
-    # put data in Minio
-    put(
-        client=minio_client,
-        buffer=buffer,
-        bucket_name=MINIO_BUCKET_NAME,
-        object_name='test_put_data',
-    )
-
-
-def test_get():
-    """Test function get."""
-    # connect to minio
-    minio_client = connect_minio()
-    # generate random bytes
-    buffer = BytesIO(randbytes(2**20))
-    # put data in minio
-    put(
-        client=minio_client,
-        buffer=buffer,
-        bucket_name=MINIO_BUCKET_NAME,
-        object_name='test_get_data',
-    )
-    # get data back from minio
-    buffer_rec = get(
-        client=minio_client,
-        bucket_name=MINIO_BUCKET_NAME,
-        object_name='test_get_data',
-    )
-    # check that data are the same
-    assert buffer.read() == buffer_rec.read()
-
-
-def test_delete():
-    """Test function delete."""
-    raise NotImplementedError()
-
-
-def test_get_image():
-    """Test function get_image."""
-    raise NotImplementedError()
-
-
-def test_put_image():
-    """Test function put_image."""
-    raise NotImplementedError()
-
-
-def test_get_model():
-    """Test function get_model."""
-    raise NotImplementedError()
-
-
-def test_put_model():
-    """Test function put_model."""
-    raise NotImplementedError()
-
-
-if __name__ == '__main__':
-    os.environ['LOG_LEVEL'] = 'debug'
-    setup_logging()
-    pytest.main()

shared/datastore/tests/unit/connect_minio_test.py

@@ -30,4 +30,4 @@ class TestConnectMinio(unittest.TestCase):
         self.tearDown()
         # run test
         with self.assertRaises(AssertionError):
-            connect_minio()
+            _ = connect_minio()

shared/datastore/tests/unit/delete_test.py

@@ -1,7 +1,5 @@
 """Definition of unittests for delete function."""
 
-import random
-import string
 import unittest
 from unittest.mock import Mock
 
@@ -13,22 +11,19 @@ from shared.datastore import delete
 class TestDelete(unittest.TestCase):
 
     def setUp(self):
-        # mock minio client
+        # set relevant variables
         self.client = Mock(spec=Minio)
-        # set bucket name
         self.bucket_name = 'test-bucket'
-        # set object name
-        self.object_name = ''.join(
-            random.choices(
-                string.ascii_uppercase + string.digits,
-                k=24,
-            ),
-        )
+        self.object_name = '46KXJMFIAPVLM0TKRFZR5YPPTVJ6PJNX'
+        # set bad arguments
+        self.bad_client = 'not-minio-type'
+        self.bad_string = float(0.0)
+        self.len_0_string = ''
 
     def test_should_fail_on_wrong_input_type_client(self):
         with self.assertRaises(AssertionError):
             delete(
-                client='not-minio-type',
+                client=self.bad_client,
                 bucket_name=self.bucket_name,
                 object_name=self.object_name,
             )
@@ -37,7 +32,7 @@ class TestDelete(unittest.TestCase):
         with self.assertRaises(AssertionError):
             delete(
                 client=self.client,
-                bucket_name=0.0,
+                bucket_name=self.bad_string,
                 object_name=self.object_name,
             )
 
@@ -45,7 +40,7 @@ class TestDelete(unittest.TestCase):
         with self.assertRaises(AssertionError):
             delete(
                 client=self.client,
-                bucket_name='',
+                bucket_name=self.len_0_string,
                 object_name=self.object_name,
             )
 
@@ -54,7 +49,7 @@ class TestDelete(unittest.TestCase):
             delete(
                 client=self.client,
                 bucket_name=self.bucket_name,
-                object_name=0.0,
+                object_name=self.bad_string,
             )
 
     def test_should_fail_on_wrong_input_length_object_name(self):
@@ -62,16 +57,5 @@ class TestDelete(unittest.TestCase):
             delete(
                 client=self.client,
                 bucket_name=self.bucket_name,
-                object_name='',
-            )
-
-    def test_should_call_client__remove_object(self):
-        delete(
-            client=self.client,
-            bucket_name=self.bucket_name,
-            object_name=self.object_name,
-        )
-        self.client.remove_object.assert_called_with(
-            bucket_name=self.bucket_name,
-            object_name=self.object_name,
+                object_name=self.len_0_string,
             )

shared/datastore/tests/unit/get_image_test.py

@@ -1,62 +1,63 @@
-# """Definition of unittests for get_image function."""
+"""Definition of unittests for get_image function."""
 
-# import os
-# import unittest
-# from unittest.mock import Mock
-# from minio import Minio
-# import random
-# import string
-# from PIL import Image
-# from io import BytesIO
+import os
+import unittest
+from unittest.mock import MagicMock
 
-# from shared.datastore import get_image
+from minio import Minio
+
+from shared.datastore import get_image
 
 
-# class TestGetImage(unittest.TestCase):
+class TestGetImage(unittest.TestCase):
 
-#     def setUp(self):
-#         # mock minio client
-#         self.client = Mock(spec=Minio)
-#         # mock response object
-#         image = Image.new(mode='RGB', size=(480,480))
-#         buffer = BytesIO()
-#         image.save(buffer, 'png')
-#         self.client.get_object.return_value.data = buffer.getvalue()
-#         # set object name
-#         self.object_name = ''.join(
-#             random.choices(
-#                 string.ascii_uppercase + string.digits,
-#                 k=24
-#             )
-#         )
-#         # populate env
-#         self.env_var_map = {
-#             'MINIO_BUCKET_NAME': 'test-bucket'
-#         }
-#         for key, val in self.env_var_map.items():
-#             os.environ[key] = val
+    def setUp(self):
+        # set relevant variables
+        self.client = MagicMock(spec=Minio)
+        self.object_name = '46KXJMFIAPVLM0TKRFZR5YPPTVJ6PJNX'
+        self.env_var_map = {
+            'MINIO_BUCKET_NAME': 'test-bucket',
+        }
+        # set bad arguments
+        self.bad_client = 'not-minio-type'
+        self.bad_string = float(0.0)
+        self.len_0_string = ''
+        # populate env
+        for key, val in self.env_var_map.items():
+            os.environ[key] = val
 
-#     def tearDown(self):
-#         # clean env
-#         for key in self.env_var_map:
-#             _ = os.environ.pop(key, default=None)
+    def tearDown(self):
+        # clean env
+        for key in self.env_var_map:
+            _ = os.environ.pop(key, default=None)
 
-#     def test_should_fail_when_env_not_set(self):
-#         # ensure env not set
-#         self.tearDown()
-#         # run test
-#         with self.assertRaises(AssertionError):
-#             get_image(
-#                 client=self.client,
-#                 object_name=self.object_name
-#             )
+    def test_should_fail_when_env_not_set(self):
+        # ensure env not set
+        self.tearDown()
+        # run test
+        with self.assertRaises(AssertionError):
+            get_image(
+                client=self.client,
+                object_name=self.object_name,
+            )
 
-#     def test_should_call_client__get_object(self):
-#         get_image(
-#             client=self.client,
-#             object_name=self.object_name,
-#         )
-#         self.client.get_object.assert_called_with(
-#             bucket_name=self.env_var_map['MINIO_BUCKET_NAME'],
-#             object_name=f'images/{self.object_name}',
-#         )
+    def test_should_fail_on_wrong_input_type_client(self):
+        with self.assertRaises(AssertionError):
+            get_image(
+                client=self.bad_client,
+                object_name=self.object_name,
+            )
+
+    def test_should_fail_on_wrong_input_type_object_name(self):
+        with self.assertRaises(AssertionError):
+            get_image(
+                client=self.client,
+                object_name=self.bad_string,
+            )
+
+    def test_should_fail_on_wrong_input_length_object_name(self):
+        with self.assertRaises(AssertionError):
+            get_image(
+                client=self.client,
+                object_name=self.len_0_string,
+            )

shared/datastore/tests/unit/get_model_test.py

@@ -1,62 +1,63 @@
-# """Definition of unittest for get_model function."""
+"""Definition of unittest for get_model function."""
 
-# import os
-# import unittest
-# from unittest.mock import Mock
-# from minio import Minio
-# import random
-# import string
+import os
+import unittest
+from unittest.mock import MagicMock
 
-# from io import BytesIO
+from minio import Minio
 
-# from shared.datastore import get_model
+from shared.datastore import get_model
 
 
-# class TestGetModel(unittest.TestCase):
+class TestGetModel(unittest.TestCase):
 
-#     def setUp(self):
-#         # mock minio client
-#         self.client = Mock(spec=Minio)
-#         # mock response object
-#         image = Image.new(mode='RGB', size=(480,480))
-#         buffer = BytesIO()
-#         image.save(buffer, 'png')
-#         self.client.get_object.return_value.data = buffer.getvalue()
-#         # set object name
-#         self.object_name = ''.join(
-#             random.choices(
-#                 string.ascii_uppercase + string.digits,
-#                 k=24
-#             )
-#         )
-#         # populate env
-#         self.env_var_map = {
-#             'MINIO_BUCKET_NAME': 'test-bucket'
-#         }
-#         for key, val in self.env_var_map.items():
-#             os.environ[key] = val
+    def setUp(self):
+        # set relevant variables
+        self.client = MagicMock(spec=Minio)
+        self.object_name = '46KXJMFIAPVLM0TKRFZR5YPPTVJ6PJNX'
+        self.env_var_map = {
+            'MINIO_BUCKET_NAME': 'test-bucket',
+        }
+        # set bad arguments
+        self.bad_client = 'not-minio-type'
+        self.bad_string = float(0.0)
+        self.len_0_string = ''
+        # populate env
+        for key, val in self.env_var_map.items():
+            os.environ[key] = val
 
-#     def tearDown(self):
-#         # clean env
-#         for key in self.env_var_map:
-#             _ = os.environ.pop(key, default=None)
+    def tearDown(self):
+        # clean env
+        for key in self.env_var_map:
+            _ = os.environ.pop(key, default=None)
 
-#     def test_should_fail_when_env_not_set(self):
-#         # ensure env not set
-#         self.tearDown()
-#         # run test
-#         with self.assertRaises(AssertionError):
-#             get_image(
-#                 client=self.client,
-#                 object_name=self.object_name
-#             )
+    def test_should_fail_when_env_not_set(self):
+        # ensure env not set
+        self.tearDown()
+        # run test
+        with self.assertRaises(AssertionError):
+            get_model(
+                client=self.client,
+                object_name=self.object_name,
+            )
 
-#     def test_should_call_client__get_object(self):
-#         get_image(
-#             client=self.client,
-#             object_name=self.object_name,
-#         )
-#         self.client.get_object.assert_called_with(
-#             bucket_name=self.env_var_map['MINIO_BUCKET_NAME'],
-#             object_name=f'images/{self.object_name}',
-#         )
+    def test_should_fail_on_wrong_input_type_client(self):
+        with self.assertRaises(AssertionError):
+            get_model(
+                client=self.bad_client,
+                object_name=self.object_name,
+            )
+
+    def test_should_fail_on_wrong_input_type_object_name(self):
+        with self.assertRaises(AssertionError):
+            get_model(
+                client=self.client,
+                object_name=self.bad_string,
+            )
+
+    def test_should_fail_on_wrong_input_length_object_name(self):
+        with self.assertRaises(AssertionError):
+            get_model(
+                client=self.client,
+                object_name=self.len_0_string,
+            )

shared/datastore/tests/unit/get_test.py

@@ -1,10 +1,7 @@
 """Definition of unittests for get function."""
 
-import random
-import string
 import unittest
-from io import BytesIO
-from unittest.mock import Mock
+from unittest.mock import MagicMock
 
 from minio import Minio
 
@@ -12,29 +9,20 @@ from shared.datastore import get
 
 
 class TestGet(unittest.TestCase):
-
     def setUp(self):
-        # mock minio client
-        self.client = Mock(spec=Minio)
-        # set bucket name
+        # set relevant variables
+        self.client = MagicMock(spec=Minio)
         self.bucket_name = 'test-bucket'
-        # set object name
-        self.object_name = ''.join(
-            random.choices(
-                string.ascii_uppercase + string.digits,
-                k=24,
-            ),
-        )
-        # mock response object
-        self.client.get_object.return_value.status = 200
-        buffer = BytesIO(random.randbytes(2**20))
-        self.client.return_value.get_object = buffer
-        self.client.get_object.return_value.read = buffer.getvalue()
+        self.object_name = '46KXJMFIAPVLM0TKRFZR5YPPTVJ6PJNX'
+        # set bad arguments
+        self.bad_client = 'not-minio-type'
+        self.bad_string = float(0.0)
+        self.len_0_string = ''
 
     def test_should_fail_on_wrong_input_type_client(self):
         with self.assertRaises(AssertionError):
             get(
-                client='not-minio-type',
+                client=self.bad_client,
                 bucket_name=self.bucket_name,
                 object_name=self.object_name,
             )
@@ -43,7 +31,7 @@ class TestGet(unittest.TestCase):
         with self.assertRaises(AssertionError):
             get(
                 client=self.client,
-                bucket_name=0.0,
+                bucket_name=self.bad_string,
                 object_name=self.object_name,
             )
 
@@ -51,7 +39,7 @@ class TestGet(unittest.TestCase):
         with self.assertRaises(AssertionError):
             get(
                 client=self.client,
-                bucket_name='',
+                bucket_name=self.len_0_string,
                 object_name=self.object_name,
             )
 
@@ -60,7 +48,7 @@ class TestGet(unittest.TestCase):
             get(
                 client=self.client,
                 bucket_name=self.bucket_name,
-                object_name=0.0,
+                object_name=self.bad_string,
             )
 
     def test_should_fail_on_wrong_input_length_object_name(self):
@@ -68,16 +56,5 @@ class TestGet(unittest.TestCase):
             get(
                 client=self.client,
                 bucket_name=self.bucket_name,
-                object_name='',
-            )
-
-    def test_should_call_client__get_object(self):
-        get(
-            client=self.client,
-            bucket_name=self.bucket_name,
-            object_name=self.object_name,
-        )
-        self.client.get_object.assert_called_with(
-            bucket_name=self.bucket_name,
-            object_name=self.object_name,
+                object_name=self.len_0_string,
             )

shared/datastore/tests/unit/put_image_test.py

@@ -0,0 +1,41 @@
+"""Definition of unittests for put_image function."""
+
+import os
+import unittest
+from unittest.mock import MagicMock
+
+from minio import Minio
+from PIL import Image
+
+from shared.datastore import put_image
+
+
+class TestPutImage(unittest.TestCase):
+
+    def setUp(self):
+        # set relevant variables
+        self.client = MagicMock(spec=Minio)
+        self.image = Image.new(mode='RGB', size=(480, 480))
+        self.env_var_map = {
+            'MINIO_BUCKET_NAME': 'test-bucket',
+        }
+        # set bad arguments
+        self.bad_client = 'not-minio-type'
+        self.bad_image = 'not-image-type'
+        # populate env
+        for key, val in self.env_var_map.items():
+            os.environ[key] = val
+
+    def test_should_fail_on_wrong_input_type_client(self):
+        with self.assertRaises(AssertionError):
+            put_image(
+                client=self.bad_client,
+                image=self.image,
+            )
+
+    def test_should_fail_on_wrong_input_type_image(self):
+        with self.assertRaises(AssertionError):
+            put_image(
+                client=self.client,
+                image=self.bad_image,
+            )

shared/datastore/tests/unit/put_model_test.py

@@ -0,0 +1,40 @@
+"""Definition of unittests for put_model function."""
+
+import os
+import unittest
+from unittest.mock import MagicMock
+
+from minio import Minio
+from torch.nn import Module
+
+from shared.datastore import put_model
+
+
+class TestPutModel(unittest.TestCase):
+    def setUp(self):
+        # set relevant variables
+        self.client = MagicMock(spec=Minio)
+        self.model = MagicMock(spec=Module)
+        self.env_var_map = {
+            'MINIO_BUCKET_NAME': 'test-bucket',
+        }
+        # set bad arguments
+        self.bad_client = 'not-minio-type'
+        self.bad_model = 'not-image-type'
+        # populate env
+        for key, val in self.env_var_map.items():
+            os.environ[key] = val
+
+    def test_should_fail_on_wrong_input_type_client(self):
+        with self.assertRaises(AssertionError):
+            put_model(
+                client=self.bad_client,
+                model=self.model,
+            )
+
+    def test_should_fail_on_wrong_input_type_model(self):
+        with self.assertRaises(AssertionError):
+            put_model(
+                client=self.client,
+                model=self.bad_model,
+            )

shared/datastore/tests/unit/put_test.py

@@ -0,0 +1,80 @@
+"""Definition of unittests for put function."""
+
+import unittest
+from io import BytesIO
+from unittest.mock import MagicMock
+
+from minio import Minio
+from PIL import Image
+
+from shared.datastore import put
+
+
+class TestPut(unittest.TestCase):
+    def setUp(self):
+        # set relevant variables
+        self.client = MagicMock(spec=Minio)
+        self.bucket_name = 'test-bucket'
+        self.object_name = '46KXJMFIAPVLM0TKRFZR5YPPTVJ6PJNX'
+        self.image = Image.new(mode='RGB', size=(480, 480))
+        self.buffer = BytesIO()
+        self.image.save(self.buffer, 'png')
+        # set bad arguments
+        self.bad_client = 'not-minio-type'
+        self.bad_string = float(0.0)
+        self.bad_buffer = 'not-buffer-type'
+        self.len_0_string = ''
+
+    def test_should_fail_on_wrong_input_type_client(self):
+        with self.assertRaises(AssertionError):
+            put(
+                client=self.bad_client,
+                buffer=self.buffer,
+                bucket_name=self.bucket_name,
+                object_name=self.object_name,
+            )
+
+    def test_should_fail_on_wrong_input_type_buffer(self):
+        with self.assertRaises(AssertionError):
+            put(
+                client=self.client,
+                buffer=self.bad_buffer,
+                bucket_name=self.bucket_name,
+                object_name=self.object_name,
+            )
+
+    def test_should_fail_on_wrong_input_type_bucket_name(self):
+        with self.assertRaises(AssertionError):
+            put(
+                client=self.client,
+                buffer=self.buffer,
+                bucket_name=self.bad_string,
+                object_name=self.object_name,
+            )
+
+    def test_should_fail_on_wrong_input_length_bucket_name(self):
+        with self.assertRaises(AssertionError):
+            put(
+                client=self.client,
+                buffer=self.buffer,
+                bucket_name=self.len_0_string,
+                object_name=self.object_name,
+            )
+
+    def test_should_fail_on_wrong_input_type_object_name(self):
+        with self.assertRaises(AssertionError):
+            put(
+                client=self.client,
+                buffer=self.buffer,
+                bucket_name=self.bucket_name,
+                object_name=self.bad_string,
+            )
+
+    def test_should_fail_on_wrong_input_length_object_name(self):
+        with self.assertRaises(AssertionError):
+            put(
+                client=self.client,
+                buffer=self.buffer,
+                bucket_name=self.bucket_name,
+                object_name=self.len_0_string,
+            )