mockly-testcontainers 0.12.1

Testcontainers module for Mockly — run Mockly as a Docker container in tests

mockly-testcontainers

Run Mockly in Docker-backed Python tests with testcontainers-python.

The package starts ghcr.io/dever-labs/mockly:latest, waits for the management API to be ready, and provides helpers for mocks, scenarios, faults, and logs.

Requirements

• Python 3.10+
• Docker

Install

pip install mockly-testcontainers

Quickstart

import urllib.request

from mockly_testcontainers import Mock, MockRequest, MockResponse, MocklyContainer

with MocklyContainer() as container:
    container.add_mock(
        Mock(
            id="get-user",
            request=MockRequest(method="GET", path="/users/1"),
            response=MockResponse(status=200, body='{"id":1}'),
        )
    )

    with urllib.request.urlopen(f"{container.get_http_base()}/users/1") as response:
        assert response.status == 200
        assert response.read().decode() == '{"id":1}'

When to use the testcontainers module

Use mockly-testcontainers when you want Docker-managed lifecycle, no native binary download, or the same Mockly image in local tests and CI.

Use mockly-driver when you want to run the native Mockly binary directly from Python.

Construction and configuration

MocklyContainer extends testcontainers.core.container.DockerContainer.

API	Description
MocklyContainer(image=DEFAULT_IMAGE)	Create a container using the default Mockly image, or override it with another image name.
with_inline_config(yaml)	Replace /config/mockly.yaml with inline YAML before startup.
start()	Start the container and wait for the management API.
stop()	Stop the container and clean up the generated config file.

Custom YAML config

with MocklyContainer().with_inline_config("""mockly:
  api:
    port: 9091
protocols:
  http:
    enabled: true
    port: 8090
""") as container:
    ...

Management methods

Method	Description
get_http_base()	Base URL of the mock HTTP server.
get_api_base()	Base URL of the management API.
add_mock(mock)	Register a dynamic HTTP mock.
delete_mock(mock_id)	Delete a mock by ID.
reset()	Remove dynamic mocks, deactivate scenarios, and clear faults.
activate_scenario(scenario_id)	Activate a configured scenario.
deactivate_scenario(scenario_id)	Deactivate a configured scenario.
set_fault(config)	Apply a global HTTP fault.
clear_fault()	Remove the active fault.
get_logs()	Read request logs as JSON.
clear_logs()	Clear stored request logs.

Exported types

The package exports these dataclasses:

• Mock
• MockRequest
• MockResponse
• FaultConfig