The Assertion Generator is able to create assertions specific to your own classes, it comes with :

• a CLI tool
• a maven plugin
• an eclipse plugin (planned for April).
• an idea plugin who is a fork of the JUnit Generator v2 plugin

Let's say that you have a Player class with name and team properties, the generator is able to create a PlayerAssert assertions class with hasName and hasTeam assertions, to write code like :

assertThat(mvp).hasName("Lebron James").hasTeam("Miami Heat");

2013-03-26 : 1.0.0 release : the first release after Fest fork, generated assertions are cleaner.

You should use the provided maven plugin.

We have developed an Eclipse plugin that allows you to generate assertions for a specific class (one at time only).
Please check AssertJ eclipse plugin documentation.

Get the AssertJ Assertions Generator 1.0.0 archive for unix or windows and extract it.

The archive structure is :

assertion-generator/
  |-- lib/
  |-- templates/
  |-- generate-assertions script (.bat or .sh)

• Put in lib/ directory the jars containing the classes you want to generate assertions for .

• Launch the scripts with either the classes or the packages containing the classes you want to generate assertions for.

Generate assertions for TolkienCharacter class :

generate-assertions.sh org.assertj.examples.data.TolkienCharacter 

Generate assertions for all classes in org.assertj.examples.data :

generate-assertions.sh org.assertj.examples.data 

• your assertions classes have been generated, go find them in the current directory

Tip :
You can change what is generated by modifying the templates used for assertions creation (have a look at templates directory)