# ChannelWatcher

[![hex package](](
[![build status](](
[![coverage report](](

A [GenServer]( to monitor PIDs and run callbacks when they go down.

This is essentially a _slightly_ improved version of Chris McCord's answer to a [StackOverflow question](

## Installation

The package can be installed by adding `channel_watcher` to your list of dependencies in `mix.exs`:

def deps do
    {:channel_watcher, "~> 0.1.0"}

## Usage

Drop this in a module for a process you wish to test (such as a [Phoenix channel](

:ok = ChannelWatcher.monitor(self(), {__MODULE__, CALLBACK, [ARGS]})

Make sure to replace `CALLBACK` with an atom of your callback function name, and `[ARGS]` with a list of arguments to pass to that callback.

The [test]( also shows an example of usage.