Connectum API Reference / @connectum/testing / index / createMockFn

Function: createMockFn()

createMockFn<F>(impl): MockFn<F>

Defined in: test-fixtures/dist/index.d.ts:150

Create a portable mock function that wraps impl and records every call.

Type Parameters

F

F extends (...args) => any

Parameters

impl

F

The underlying implementation to delegate to.

Returns

MockFn<F>

A spy-enabled wrapper whose .mock property exposes call metadata.

Example

const add = createMockFn((a: number, b: number) => a + b);
add(1, 2);
add(3, 4);
add.mock.callCount(); // 2
add.mock.calls[0].arguments; // [1, 2]