Automatically generated integration tests from real traffic — 11 test files, zero manual effort

[imLostify]

TL;DR

I noticed this repo has no test suite, so I ran Httrace against it — a tool that captures real HTTP traffic and generates pytest tests automatically. It produced 11 test files covering every endpoint in ~10 minutes of setup.

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Setup (2 lines of code)

Add the middleware to tutorial/wsgi.py:

from django.core.wsgi import get_wsgi_application
from httrace import WsgiHttraceCaptureMiddleware

application = WsgiHttraceCaptureMiddleware(
    get_wsgi_application(),
    api_key="YOUR_API_KEY",   # free at httrace.com
    service="drf-tutorial",
    sample_rate=1.0,
)

Then just use your app normally — Httrace captures traffic in the background. When you're ready:

pip install httrace-cli
httrace generate --service drf-tutorial --format pytest

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What got generated

After firing ~20 requests (CRUD on snippets + users, 200s, 404s, 403s), Httrace produced:

test_get_snippets.py

def test_get_snippets_200(client):
    response = client.get("/snippets/")
    assert response.status_code == 200
    assert response.elapsed.total_seconds() * 1000 < 15  # 3× captured latency
    body = response.json()
    assert body["count"] == 0
    assert body["next"] is None
    assert body["previous"] is None
    assert isinstance(body["results"], list)

test_get_snippets_id.py — 4 variants of 404s captured automatically:

def test_get_snippets_1_404(client):
    response = client.get("/snippets/1/")
    assert response.status_code == 404
    body = response.json()
    assert body["detail"] == "No Snippet matches the given query."

def test_get_snippets_9999_404(client):
    response = client.get("/snippets/9999/")
    assert response.status_code == 404
    body = response.json()
    assert body["detail"] == "No Snippet matches the given query."

test_patch_snippets_id.py — captures both authenticated (200) and unauthenticated (403) variants:

@pytest.fixture
def payload_patch_snippets_1_200():
    return {"linenos": True}

def test_patch_snippets_1_200(client, payload_patch_snippets_1_200):
    response = client.patch("/snippets/1/", json=payload_patch_snippets_1_200)
    assert response.status_code == 200
    body = response.json()
    assert body["owner"] == "admin"
    assert body["linenos"] is True
    assert body["language"] == "python"

test_delete_snippets_id.py

def test_delete_snippets_2_204(client):
    response = client.delete("/snippets/2/")
    assert response.status_code == 204

Plus test_post_snippets.py, test_put_snippets_id.py, test_get_snippets_id_highlight.py, test_get_users.py, test_get_users_id.py, test_get_.py, and a conftest.py with session-scoped httpx.Client and auth fixture stubs.

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Full file list generated

File	Interactions captured
test_get_snippets.py	1
test_post_snippets.py	2
test_get_snippets_id.py	4
test_get_snippets_id_highlight.py	1
test_put_snippets_id.py	1
test_patch_snippets_id.py	2
test_get_users.py	1
test_get_users_id.py	1
test_delete_snippets_id.py	2
test_get_.py (API root)	1
conftest.py	—

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Why this repo in particular

The DRF tutorial is one of the most-forked DRF resources. A lot of people build real projects off this starting point — and those projects go into production with no tests. Having a reference test suite here would set a better baseline for the ecosystem.

Httrace's free tier covers 50k requests/month. No infrastructure to maintain — just the middleware and a CLI command.

Happy to answer questions or open a PR if there's interest.