Moved prometheus monitoring into flask blueprint

tests/items/s3/test_s3item_source.py

@@ -1,7 +1,9 @@
 import unittest
 from unittest.mock import MagicMock, Mock, patch
 
-from cellxgene_gateway.gateway import app
+from flask import Flask
+
+from cellxgene_gateway.gateway_blueprint import gateway_blueprint
 from cellxgene_gateway.items.item import ItemType
 from cellxgene_gateway.items.s3.s3item import S3Item
 from cellxgene_gateway.items.s3.s3item_source import S3ItemSource
@@ -82,6 +84,8 @@ class TestScanDirectory(unittest.TestCase):
 
         s3func.return_value = S3Mock
         source = S3ItemSource("my-bucket")
+        app = Flask(__name__)
+        app.register_blueprint(gateway_blueprint)
         with app.test_request_context(query_string="refresh=true") as test_context:
             tree = source.scan_directory()
 

tests/test_cache_entry.py

@@ -5,7 +5,7 @@ from flask import Flask
 from cellxgene_gateway import flask_util
 from cellxgene_gateway.cache_entry import CacheEntry, CacheEntryStatus
 from cellxgene_gateway.cache_key import CacheKey
-from cellxgene_gateway.gateway import app
+from cellxgene_gateway.gateway_blueprint import gateway_blueprint
 from cellxgene_gateway.items.file.fileitem import FileItem
 from cellxgene_gateway.items.file.fileitem_source import FileItemSource
 from cellxgene_gateway.items.item import ItemType
@@ -18,7 +18,8 @@ key = CacheKey(
 
 class TestRenderEntry(unittest.TestCase):
     def setUp(self):
-        self.app = app
+        self.app = Flask(__name__)
+        self.app.register_blueprint(gateway_blueprint)
         self.app_context = self.app.test_request_context()
         self.app_context.push()
         self.client = self.app.test_client()