method

test.MatchersBuiltin.toHaveBeenCalledBefore

mock: Mock<(...args: any[]) => any>,

failIfNoFirstInvocation?: boolean

): R;

Ensure that a mock function's first call came before mock's first call.

@param mock

The mock function to compare with

@param failIfNoFirstInvocation

Whether to fail when the received mock function was never called. Defaults to true.

Referenced types

type Mock<T extends (...args: any[]) => any> = JestMock.Mock<T>