Upgrade Guide

As of RESPX version 0.15.0, the API has changed, but kept with deprecation warnings, later to be broken for backward compatibility in 0.16.0.

The biggest change involved separating request pattern arguments from response details.

This brings the RESPX request matching API closer to the HTTPX client API, and the response mocking aligned with the python Mock API.

Responses

Response details are now mocked separatelty:

# Previously
respx.post("https://some.url/", status_code=200, content={"x": 1})

# Now
respx.post("https://some.url/").mock(return_value=Response(200, json={"x": 1}))
respx.post("https://some.url/").respond(200, json={"x": 1})
respx.post("https://some.url/") % dict(json={"x": 1})

The .add API has changed to .route:

# Previously
respx.add("POST", "https://some.url/", content="foobar")

# Now
respx.route(method="POST", url="https://some.url/").respond(content="foobar")

Callbacks

Callbacks and simulated errors are now side effects:

# Previously
respx.post("https://some.url/", content=callback)
respx.post("https://some.url/", content=Exception())
respx.add(callback)

# Now
respx.post("https://some.url/").mock(side_effect=callback)
respx.post("https://some.url/").mock(side_effect=Exception)
respx.route().mock(side_effect=callback)

Stacking

Repeating a mocked response, for stacking, is now solved with side effects:

# Previously
respx.post("https://some.url/", status_code=404)
respx.post("https://some.url/", status_code=200)

# Now
respx.post("https://some.url/").mock(
    side_effect=[
        Response(404),
        Response(200),
    ],
)

Note: Repeating a route in 0.15.0+ replaces any existing route with same pattern.

Aliasing

Aliases changed to named routes:

# Previously
respx.post("https://example.org/", alias="example")
assert respx.aliases["example"].called

# Now
respx.post("https://example.org/", name="example")
assert respx.routes["example"].called

History

Call history renamed:

# Previously
assert respx.stats.call_count == 1

# Now
assert respx.calls.call_count == 1

MockTransport

The respx.MockTransport should no longer be used as a mock router, use respx.mock(...).

# Previously
my_mock = respx.MockTransport(assert_all_called=False)

# Now
my_mock = respx.mock(assert_all_called=False)