A framework for building behaviour-driven tests in fluent Java.
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A framework for building behaviour-driven tests in fluent Java. Copyright 2010 youDevise, Ltd..


Download the Narrative jar file and the Hamcrest Matchers library (version 1.2). Then put both jars in your classpath where your test code can see them.


Here is a typical Narrative test (the object under test is a very simple calculator):

@Test public void
adds_two_numbers() {
    Given.the( operator).was_able_to( press('2'))
                        .was_able_to( press('+'))
                        .was_able_to( press('2'));

    When.the( operator).attempts_to( press('='));

    Then.the( operator).expects_that( the_displayed_value(), is("4"));

To make this test work, you need to define:

  1. operator, an Actor which manipulates the calculator
  2. press() and the_displayed_value(), which tell the operator to perform actions on the calculator

You can see these implementations in our most basic example. We plan to add more examples in the examples directory of the source code.

Building from source

We build using Gradle. But you don't need Gradle installed to build Narrative.

If you don't have Gradle installed

In the Narrative home directory, type ./gradlew (on Linux and Mac) or gradlew.bat (on Windows). This will build, run tests, and put Narrative.jar in build/libs.

If you do have Gradle installed, and in your path

Use gradle to build, run tests, and produce the Narrative.jar in build/libs.

Viewing in Eclipse

To view Narrative source code in Eclipse:

  1. Run gradle :eclipse (or ./gradlew :eclipse). This downloads the libraries and creates the project and classpath files.
  2. Create a new classpath variable in Preferences / Java / Build Path / Classpath Variables with the name GRADLE_CACHE and the value <USER_HOME>/.gradle/cache (we have not tested this on Windows, but we think it should work similarly).
  3. Import the project as normal.


Open source under the very permissive MIT license.


A project of youDevise. We're hiring!

Inspired by JNarrate, a RiverGlide idea.