An open source unit testing framework for BPEL including test coverage calculation and mocking facilities
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BPELUnit is a unit testing framework for WS-BPEL compositions. It provides facilities for deploying, invoking and undeploying a composition running in a WS-BPEL engine. External services can be replaced with mockups and replies can be delayed at will. Additionally, BPELUnit can derive test cases by reading rows from an external data source and combining it with Apache Velocity templates.

More documentation is available in the directory net.bpelunit.dist/src/main/resources/doc. The rest of this document is dedicated to explaining the build infrastructure available.

Basic structure of the code

In terms of functionality, BPELUnit is divided into:

  • The core functionality of the framework:
    • Most of the testing logic is in net.bpelunit.framework.
    • Some utility classes are in net.bpelunit.util.
    • An abstract model of a WS-BPEL composition (useful for extracting information) is available in net.bpelunit.model.bpel.
  • A set of interfaces to access the core logic:
    • From the command line: net.bpelunit.framework.client.command.
    • From Ant: net.bpelunit.framework.client.ant.
    • From Maven: net.bpelunit.framework.client.maven.
    • From Eclipse: the projects in tycho.
  • A set of external data source types for various file formats (the core library only has support for Apache Velocity .vm files):
    • CSV: net.bpelunit.framework.control.datasource.csv.
    • XLS and XLSX: net.bpelunit.framework.control.datasource.excel.
    • HTML tables: net.bpelunit.framework.control.datasource.html.
    • ooCalc: net.bpelunit.framework.control.datasource.ods.
  • Several additional utilities:
    • A deployer extension for ActiveVOS 9: net.bpelunit.framework.control.deploy.activevos9.
    • The net.bpelunit.utils.* projects have small command-line tools for:
      • Obtaining stats from .bpel or .bpts files.
      • Generating a basic .bpts file from a .bpel file.
      • Inlining external data sources into .bpts files.
      • Extracting test data from a .bpts.
      • Splitting .bpts files.
  • A project for generating the standalone (CLI + Ant) distribution: net.bpelunit.dist.

BPELUnit is built from the command line using Maven and is developed using Eclipse. There are roughly four kinds of projects within BPELUnit:

  • The core functionality, the data source types and the ActiveVOS 9 deployer extension are usable as regular Java libraries and OSGi bundles. The OSGi metadata is generated with the Apache Felix maven-bundle-plugin and is made available to Eclipse and Tycho.
  • The rest of the projects in the main directory are only usable as plain Java command-line tools. They do not have OSGi metadata.
  • The projects in tycho are Eclipse plug-ins, features and update sites based on the core OSGi bundles and the target platform definition in They can be built from the command line with Tycho as well.
  • The projects in eclipse-deps repackage several dependencies which are not available in well-known public P2 repositories as OSGi bundles, for their use by the tycho projects. These dependencies are regularly uploaded to

Building with Maven

In order to build the code with Maven 3.0 or higher (needed for the Tycho-based projects), you only need to run ./ It will build and install into your local Maven repository everything: core projects, Eclipse plugins, the Eclipse feature and update site, and the standalone distribution.

Please note that due to a limitation in Tycho, the core projects and the Eclipse plugins have been split into separate reactors. Also, you must install the core projects into your Maven repository before you can build the Tycho-based projects or the net.bpelunit.dist project.

Note for the maintainer: if you want to deploy a release to the Sonatype OSS server, please use the sonatype-deploy profile, and make sure you have a GPG keypair which has been published to You can run the profile like this:

mvn -P sonatype-deploy

If you experience a StackOverflowException most likely you will need to increase the per thread stack size. To do so use the following command

set MAVEN_OPTS="-Xss12m" (Windows)
export MAVEN_OPTS="-Xss12m" (Linux)

Building with Eclipse PDE

BPELUnit is developed using the Eclipse Plug-in Development Environment. To do so, you will still need Maven to bootstrap the environment. Just run ./prepare-eclipse-projects.shfrom this directory. It will ensure that the dependencies will be available in the target/dependency directory in each core project, and that the required code and MANIFEST.MF files are automatically generated.

You should now import the core and tycho projects into your Eclipse workspace: the eclipse-deps projects are not needed. Open the .target file in the and click on "Set as Target Platform". This will tell Eclipse that the plugins should be developed on top of the official BPELUnit target platform definition.

To test them out, right-click on any of the projects and select "Run As > Eclipse Application". This will open a nested Eclipse instance with the BPELUnit plugins running inside it.

Note: please avoid using M2Eclipse, as it modifies the original pom.xml in unwanted ways.