# BehavesLike
[](https://travis-ci.org/koudelka/behaves_like)
[](https://hex.pm/packages/behaves_like)
Turns a module's specs into callbacks.
Lets you state that a module behaves like another, without writing behaviour callbacks.
Uses a macro for 1.7, until https://github.com/elixir-lang/elixir/issues/8085 is fixed.
For example:
```elixir
defmodule API do
use BehavesLike
import BehavesLike, only: [spec_and_callback: 1]
spec_and_callback get(binary()) :: {:ok, any()} | {:error, any()}
def get(id) do
Backend.get(id)
end
end
defmodule Backend do
@behaviour API
@impl true
def get(id) do
database().get(id)
end
end
```
## Installation
From Hex:
```elixir
def deps do
[
{:behaves_like, "~> 0.4.0"}
]
end
```
## Usage
Import the required macro, then declare your specs with `spec_and_callback/1`, as in the example above.