added mocked server tests with flask testing uitilities

image_prediction/flask.py

@@ -28,7 +28,7 @@ def make_prediction_server(predict_fn: Callable):
         resp.status_code = 200
         return resp
 
-    @app.route("/", methods=["POST"])
+    @app.route("/predict", methods=["POST"])
     def predict():
         def predict_fn_wrapper(pdf, return_dict):
             return_dict["result"] = predict_fn(pdf)

test/integration_tests/server_test.py

@@ -1,16 +1,11 @@
-import os
 import socket
 from multiprocessing import Process
 
-import coverage
 import pytest
 import requests
 from funcy import retry
 
 from image_prediction.flask import make_prediction_server, run_prediction_server
-from image_prediction.locations import COVERAGERC
-
-# os.environ['COVERAGE_PROCESS_START'] = COVERAGERC
 
 
 @pytest.fixture
@@ -35,16 +30,8 @@ def url(host, port):
 
 
 @pytest.fixture
-def predict_fn():
+def server():
-    def predict(_):
+    server = make_prediction_server(lambda _: 42)
-        return 42
-
-    return predict
-
-
-@pytest.fixture
-def server(predict_fn):
-    server = make_prediction_server(predict_fn)
     return server
 
 
@@ -63,7 +50,6 @@ def server_ready(url):
 @pytest.fixture(autouse=True, scope="function")
 def server_process(server, host_and_port, url):
     def get_server_process():
-        # coverage.process_startup()
         return Process(target=run_prediction_server, kwargs={"app": server, **host_and_port})
 
     server = get_server_process()
@@ -78,7 +64,7 @@ def server_process(server, host_and_port, url):
 
 
 def test_server_predict(url):
-    response = requests.post(url)
+    response = requests.post(f"{url}/predict")
     response.raise_for_status()
     assert response.json() == 42
 

test/unit_tests/mocked_server_test.py

@@ -0,0 +1,32 @@
+import json
+
+import pytest
+
+from image_prediction.flask import make_prediction_server
+
+
+@pytest.fixture
+def server():
+    server = make_prediction_server(lambda _: 42)
+    server.config.update({"TESTING": True})
+    return server
+
+
+@pytest.fixture
+def client(server):
+    return server.test_client()
+
+
+def test_server_predict(client):
+    response = client.post("/predict")
+    assert json.loads(response.data) == 42
+
+
+def test_server_health_check(client):
+    response = client.get("/health")
+    assert response.status_code == 200
+
+
+def test_server_ready_check(client):
+    response = client.get("/health")
+    assert response.status_code == 200