https://github.com/sheyll/erlymock

An EasyMock inspired mocking library for erlang.
https://github.com/sheyll/erlymock

Last synced: 20 days ago
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An EasyMock inspired mocking library for erlang.

• Host: GitHub
• URL: https://github.com/sheyll/erlymock
• Owner: sheyll
• License: mit
• Created: 2011-02-07T16:43:41.000Z (about 15 years ago)
• Default Branch: 7.3.0-dev
• Last Pushed: 2023-03-28T14:54:57.000Z (almost 3 years ago)
• Last Synced: 2025-10-21T17:51:05.805Z (5 months ago)
• Language: Erlang
• Homepage: http://hexdocs.pm/em
• Size: 4.49 MB
• Stars: 23
• Watchers: 3
• Forks: 9
• Open Issues: 1
• Metadata Files:
  • Readme: README.md
  • Changelog: CHANGELOG.md
  • License: LICENSE

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README

          
# Erlang Module Mocking

**Easy to use mocking library for unit testing**

* **[API Documentation](https://hexdocs.pm/em)**

* **[Rebar3 (hex) Installation](https://hex.pm/packages/em)**

## Example

`prouction.erl`:

    find_and_read_book(Isbn) ->

        {ok, Book} = library:lookup({isbn, Isbn}),

        media:view_book(Book).

`production_test.erl`:

    take_book_test() ->

        Mock = em:new(),

        ISBN = '978-3-596-17577-2',

        %% expectations:

        em:strict(Mock, library, lookup, [{isbn, ISBN}], {return, {ok, some_book_id}}).

        em:strict(Mock, media, view_book, [some_book_id], {return, ok}),

        em:replay(Mock),

        %% Run code under test:

        production:find_and_read_book(ISBN),

        %% assertions:

        em:verify(Mock).

## Installation

**Rebar3** and **[hex.pm](https://hex.pm/packages/em)** recommended.

Add this to your `rebar.config`:

    {em, "7.2.6"}