FunWithFlags - InMemory Adapter

An adapter for fun_with_flags that uses a GenServer to keep everything in memory.

Useful for unit testing your code without having to mock FunWithFlags

Installation

If available in Hex, the package can be installed by adding fun_with_flags_in_memory to your list of dependencies in mix.exs:

def deps do
  [
    {:fun_with_flags_in_memory, "~> 0.1.0"}
  ]
end

Configuration

Configure FunWithFlags to use this adapter while in test mode:

# config/test.exs

config :fun_with_flags, :persistence,
  adapter: FunWithFlags.Store.Persistent.InMemory

Usage

The adapter doesn't clean up by itself automatically after each test.

The current aproach is to manually clean up each flag. For example:

defmodule Tests do
  describe "a disabled feature" do
    setup do
      Flags.enable(:my_feature_flag)

      on_exit fn ->
        Flags.clear(:my_feature_flag)
      end
    end
  end
end