This tutorial describes the ActionFixture element of the FIT framework. It is composed of the following sections:

fit.Fixture
ActionFixture	This page. Describes the basic functions of the fixture
TimedActionFixture	Describes how to test time dependent tasks.

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Basic Functionality of ActionFixture

ActionFixture allows us to check the results of a sequence of events. For example, lets write a test for a simple counter.

fit.ActionFixture
start	fitnesse.fixtures.CountFixture
check	counter	0
press	count
check	counter	1
press	count
check	counter	2
enter	counter	5
press	count
check	counter	6

The metaphor for this fixture is a simple control panel.

• You press buttons that have particular names.
• You enter values into registers that have certain names.
• You check the values of named meters.

Here is the code for the CountFixture:

public class CountFixture extends Fixture {
  private int counter = 0;
  
  public void count() {
    counter++;
  }
  
  public int counter() {
    return counter;
  }
} 

As you can see the names of the buttons, registers and meters correspond directly to methods in the 'started' fixture. It's really as simple as that.

For more on ActionFixture see: TimedActionFixture.

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