latency

Signature

faultcore.latency(t: str)

Purpose

Adds fixed delay to network operations in the decorated execution.

Parameters

• t: duration string (ms or s).

Defaults and validation

• Duration must be non-negative.

Example (API latency test)

import faultcore
import time


@faultcore.latency("80ms")
def fetch_resource() -> str:
    return "ok"


def test_latency_injection() -> None:
    start = time.perf_counter()
    _ = fetch_resource()
    elapsed_ms = (time.perf_counter() - start) * 1000
    assert elapsed_ms >= 60