One of the usage guides for Erlang Rebar: introductory article

One of the usage guides for Erlang Rebar: introductory article

Full-Text Catalogs:

Https://github.com/rebar/rebar/wiki

The text of this chapter:

https://github.com/rebar/rebar/wiki/Getting-started

Rebar is a feature-rich Erlang build tool. For ERLANG/OTP Project compilation, testing, dependency management, package release, etc.

Rebar is a self-contained script that you can easily embed into your project. 1 Compiling rebar

    $ git clone git://github.com/rebar/rebar.git    $ CD Rebar    $./bootstrap

To view the command description:

    $./rebar-c    $./rebar Help Clean

2 Getting Started example 2.1 Creating a program Directory

    $ mkdir MyApp    $ cd MyApp

Copy the "1 compiled rebar" rebar to the MyApp directory

    $ CP.. /rebar/rebar.

2.2 Creating the first rebar project

    $./rebar Create-app Appid=myapp    $ touch rebar.config

After the above command was executed, 3 files were generated in MYAPP/SRC:
MYAPP.APP.SRC-OTP Application Resources
Myapp_app.erl-An implementation of OTP application behaviour
Myapp_sup.erl-the most top-level OTP Supervisor behaviour

2.3 Compiling the project

    $./rebar Compile

After the above command executes, the Ebin directory is generated, containing the. beam file that corresponds to the Src/erl file.
SRC/MYAPP.APP.SRC Generating Ebin/myapp.app

Cleanup Project

    $./rebar Clean

2.4 Test Project Rebar supports Eunit and common test framework. Add the Euint unit test to the project and add the following code to
Src/myapp_app.erl:

-export ([START/2, STOP/1]). Add later:

    Percent Eunit testing    -ifdef (TEST).    -include_lib ("Eunit/include/eunit.hrl").    -endif.

Add at the end of the file:

    Percent Eunit testing    -ifdef (TEST).    Simple_test ()        , OK = Application:start (MyApp),        ? assertnot (undefined = = Whereis (myapp_sup)).    -endif.

The IFDEF macro indicates the test phase code and is not compiled into the product.
To start compiling and testing:

    $./rebar Compile Eunit

The above command will be compiled 2 times, one output to ebin/, one output to. eunit/:
==> MyApp (Compile)
Compiled Src/myapp_app.erl
Compiled Src/myapp_sup.erl
==> MyApp (Eunit)
Compiled Src/myapp_sup.erl
Compiled Src/myapp_app.erl
Test passed.

=info report==== 30-nov-2014::03:50:01 = = =
Application:myapp
Exited:killed
Type:temporary

2.5 Test Code Coverage statistics add the following line to the Myapp/rebar.config:

    {cover_enabled, true}.

Run again:

    $ rebar Compile Eunit

The generated statistics page is in:. eunit/index.html

One of the usage guides for Erlang Rebar: introductory article