refactor: move all testing to top-level of repo

Closes https://github.com/BerriAI/litellm/issues/486

tests/local_testing/test_proxy_custom_auth.py

@@ -0,0 +1,99 @@
+import os
+import sys
+import traceback
+
+from dotenv import load_dotenv
+
+load_dotenv()
+import io
+import os
+
+# this file is to test litellm/proxy
+
+sys.path.insert(
+    0, os.path.abspath("../..")
+)  # Adds the parent directory to the system path
+import asyncio
+
+import pytest
+from fastapi import FastAPI
+
+# test /chat/completion request to the proxy
+from fastapi.testclient import TestClient
+
+import litellm
+from litellm import RateLimitError, Timeout, completion, completion_cost, embedding
+from litellm.proxy.proxy_server import (  # Replace with the actual module where your FastAPI router is defined
+    ProxyConfig,
+    initialize,
+    router,
+    save_worker_config,
+)
+
+
+# Here you create a fixture that will be used by your tests
+# Make sure the fixture returns TestClient(app)
+@pytest.fixture(scope="function")
+def client():
+    from litellm.proxy.proxy_server import cleanup_router_config_variables
+
+    cleanup_router_config_variables()
+    filepath = os.path.dirname(os.path.abspath(__file__))
+    config_fp = f"{filepath}/test_configs/test_config_custom_auth.yaml"
+    # initialize can get run in parallel, it sets specific variables for the fast api app, sinc eit gets run in parallel different tests use the wrong variables
+    app = FastAPI()
+    asyncio.run(initialize(config=config_fp))
+
+    app.include_router(router)  # Include your router in the test app
+    return TestClient(app)
+
+
+def test_custom_auth(client):
+    try:
+        # Your test data
+        test_data = {
+            "model": "openai-model",
+            "messages": [
+                {"role": "user", "content": "hi"},
+            ],
+            "max_tokens": 10,
+        }
+        # Your bearer token
+        token = os.getenv("PROXY_MASTER_KEY")
+        print(f"token: {token}")
+        headers = {"Authorization": f"Bearer {token}"}
+        response = client.post("/chat/completions", json=test_data, headers=headers)
+        pytest.fail("LiteLLM Proxy test failed. This request should have been rejected")
+    except Exception as e:
+        print(vars(e))
+        print("got an exception")
+        assert e.code == "401"
+        assert e.message == "Authentication Error, Failed custom auth"
+        pass
+
+
+def test_custom_auth_bearer(client):
+    try:
+        # Your test data
+        test_data = {
+            "model": "openai-model",
+            "messages": [
+                {"role": "user", "content": "hi"},
+            ],
+            "max_tokens": 10,
+        }
+        # Your bearer token
+        token = os.getenv("PROXY_MASTER_KEY")
+
+        headers = {"Authorization": f"WITHOUT BEAR Er  {token}"}
+        response = client.post("/chat/completions", json=test_data, headers=headers)
+        pytest.fail("LiteLLM Proxy test failed. This request should have been rejected")
+    except Exception as e:
+        print(vars(e))
+        print("got an exception")
+        assert e.code == "401"
+        assert (
+            e.message
+            == "Authentication Error, CustomAuth - Malformed API Key passed in. Ensure Key has `Bearer` prefix"
+        )
+        pass