This document discusses MUnit, a testing framework for Mule applications. MUnit allows developers to write automated tests for Mule integrations and APIs by creating test flows in Mule code or Java code. MUnit supports test-driven development principles and is integrated with tools like Maven to enable continuous integration testing. It also provides features for mocking inbound and outbound endpoints and message processors to isolate tests.

1. MULE ESB- Munit
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2. Objectives
 Learn about Munit
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3. Test Driven Development with MUnit
Why Testing ?
 Iterate comfortably
 Tests act as descriptors of application-interaction
 Fast root cause analysis
 Less time debugging
 Confidence in your work
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4. Test Driven Development
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• Software development process that relies on repetitions of very short
development cycles
1. Write an initially failing test that defines desired behavior
2. Write the smallest / simplest solution to make the test pass
3. Re-run the test and verify it passes
4. Refactor into new code to acceptable standards
5. Repeat

5. Tools for testing
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• JUnit
– Most used Java framework to write repeatable tests
– Requires a mocking framework such as Mockito to perform unit tests
• MUnit
– Mule testing framework
– Rich feature set built in, including mocking
– Written in XML or Java
– Test suites written in MUnit and JUnit can be included in Maven builds
• Supports continuous integration

6. About MUnit
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• Testing framework that allows you to easily build automated tests for
your integrations and APIs
– Create your Mule test by writing Mule code
– Create your Mule test by writing Java code
• Fully integrated with Anypoint Studio, allowing you to create, design
and run MUnit tests just like you would Mule applications
• Fully integrated with Maven
– libraries are available within MuleSoft public nexus
– Placed as a test scope within Maven dependencies
– Triggered on the test phase
– Works with surefire-reports

7. Munit use-
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• Integration
– Write test flows in Mule and/or Java code: Engage quickly
– Fully integrated with Maven: MUnit tests can be added to CI process
– Fully integrated with Surefire: Allows the generation of Surefire reports
• Mocking
– Selected inbound endpoints: i.e. AMQP, JMS, FTP
– Selected message processors: i.e. by defining the namespace and
name
(jira:create-group)
– Mock outbound endpoints: Enabling complete encapsulation of the
flow unit test

8. MUnit – Anypoint Studio integration
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• Requirement: MUnit Studio plugin installed
• Provides graphical tooling for building MUnit tests
• Available from http://studio.mulesoft.org/r5/munit