return logger.warn.mock.calls.map(([message]) => String(message));

}

function expectWarnContaining(fragment: string) {

expect(warnMessages().some((message) => message.includes(fragment))).toBe(true);

}

function enableAdvertiserUnitMode(hostname = "test-host") {

// Allow advertiser to run in unit tests.

delete process.env.VITEST;

expect(exceptionHandler).toBeTypeOf("function");

expect(handler?.(new Error("CIAO PROBING CANCELLED"))).toBe(true);

expect(logger.warn).toHaveBeenCalledWith(

expect.stringContaining("suppressing ciao cancellation"),

);

expectWarnContaining("suppressing ciao cancellation");

logger.warn.mockClear();

expect(

handler?.(new Error("Reached illegal state! IPV4 address change from defined to undefined!")),

).toBe(true);

expect(logger.warn).toHaveBeenCalledWith(

expect.stringContaining("suppressing ciao interface assertion"),

);

expectWarnContaining("suppressing ciao interface assertion");

logger.warn.mockClear();

expect(

),

),

).toBe(true);

expect(logger.warn).toHaveBeenCalledWith(

expect.stringContaining("suppressing ciao netmask assertion"),

);

expectWarnContaining("suppressing ciao netmask assertion");

logger.warn.mockClear();

expect(

),

),

).toBe(true);

expect(logger.warn).toHaveBeenCalledWith(

expect.stringContaining("suppressing ciao self-probe race"),

);

expectWarnContaining("suppressing ciao self-probe race");

await started.stop();

});

expect(createService).toHaveBeenCalledTimes(2);

});

expect(logger.warn).toHaveBeenCalledWith(

expect.stringContaining("suppressing ciao cancellation"),

);

expectWarnContaining("suppressing ciao cancellation");

expect(warnMessages().some((message) => message.includes("restarting advertiser"))).toBe(true);

expect(destroy).toHaveBeenCalledTimes(1);

expect(advertise).toHaveBeenCalledTimes(2);

await vi.advanceTimersByTimeAsync(25_000);

expect(logger.warn).toHaveBeenCalledWith(

expect.stringContaining("service stuck in announcing"),

);

expectWarnContaining("service stuck in announcing");

expect(createService).toHaveBeenCalledTimes(2);

expect(advertise).toHaveBeenCalledTimes(3);

expect(destroy).toHaveBeenCalledTimes(1);

await vi.advanceTimersByTimeAsync(55_000);

expect(logger.warn).toHaveBeenCalledWith(

expect.stringContaining("disabling advertiser after 1 stuck-state restart"),

);

expectWarnContaining("disabling advertiser after 1 stuck-state restart");

expect(createService).toHaveBeenCalledTimes(2);

expect(advertise).toHaveBeenCalledTimes(2);

expect(destroy).toHaveBeenCalledTimes(2);