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Context· classmethod

Context.testing

build a fake context for unit tests

Python
testing(**fields: Any) -> Context

Returns Context — a stub with only the named slots populated

Parameters#

name type default description
**fields Any — slot overrides — any of host, engine, project, entity, selection, ui, viewer, panel, events

Example#

Python
ctx = Context.testing(project=my_project)

# override several slots at once
ctx = Context.testing(project=fake_project, ui=fake_ui)

Notes#

A classmethod on Context. Only the named slots are populated; every other slot stays None. Use it to drive a command or action handler in a unit test without a running application.

See also#

API: project · ui · Context

Guides: Commands & actions

By LSD Team · Last updated Jul 17, 2026 Ask on Discord View as Markdown