In what I hope will be the first of several articles about Guice, a new lightweight dependency injection container from Bob Lee and Kevin Bourillion from Google, this article examines the simplest and most obvious use case for the Guice container, for mocking or faking objects in unit tests. In future articles I will examine other, more ambitious areas where it can be used, including dependency elimination in large code bases.
With Marathon you capture user interactions on the applications and also insert assertions to verify that correct processing is taking place. The generated raw script can be refactored to modules for efficient reuse and maintainability. Replay the scripts either manually or integrate Marathon into your build process for automatic execution of the test suites.
The developer edition provides ALL of the capabilities of the server edition but limits console and terminal connectivity to the first 45 minutes of a managed JVM's processing. Snapshots taken before the expiration time can still be analyzed offline in the console and the console will reconnect to the JVM once it has been stopped and started.
JMock is a library that supports test-driven development1 of Java2 code with mock objects3.
Mock objects help you design and test the interactions between the objects in your programs.
The jMock library:
* makes it quick and easy to define mock objects, so you don't break the rhythm of programming.
* lets you precisely specify the interactions between your objects, reducing the brittleness of your tests.
* works well with the autocompletion and refactoring features of your IDE
* plugs into your favourite test framework
* is easy to extend.
JRat is the Java Runtime Analysis Toolkit. Its purpose is to enable developers to better understand the runtime behavior of their Java programs. The term "behavior" includes, but is not limited to performance profiling.
While JRat is still in beta, without adding code to your application it can...
# accumulate timing statistics (a few ways)
# create trace logging
# track rate methods are called over time
# track the response time of methods over time
The key to agility is being able to modify code easily and safely. The problem is that many Java applications are too brittle to extend and enhance easily. Attempts to fix or extend - no matter how carefully done - can introduce more bugs and more complexity.
With a full suite of characterization tests generated by JUnit Factory you can bring your legacy code under control. Download our free plug-in for Eclipse to get started.
JUnitPerf is a collection of JUnit test decorators used to measure the performance and scalability of functionality contained within existing JUnit tests.
jDiffChaser is a GUI comparison tool that automates difference detection
between same screens of different versions. You can easily record scenarios
(optionally define zones of the screens to ignore during comparisons) and play suites
of them on two different versions of the same Java Swing application: differences are
then listed in a web page report.
Luntbuild is a powerful build automation and management tool. Continuous Integration or nightly builds can be easily set using a clean web interface. Executed builds are well managed using functions such as search, categorization, promotion, patching, deletion, etc. It also acts as a central build artifacts repository and download area for your whole team.
ServiceFixture is a fixture library built on top of FIT/FitNesse which enables FitNesse to be the integration test and software collaboration platform for service oriented and distributed systems. These systems usually expose stateless services, such as web service (SOAP or REST), ejb and POJO etc, to its internal or external clients, and complex domain objects are always involved in the service interfaces.
It is difficult to leverage FitNesse for these systems due to the fact that it is not trivial to represent complex domain objects in FIT test table, and hence it would require constant fixture development efforts to support the integration test. ServiceFixture is designed to fill this gap.
ServiceFixture uses expression language to represent domain objects, verify and display the response in FIT test table. Every ServiceFixture test is basically a method invocation to a stateless service. The test starts with setting up the input data, then invoking the service operation, and then checking the response.
Because the ServiceFixture is very generic, to setup ServiceFixture and FitNesse for a project, you only need to write a ServiceFixture extension to encapsulate the invocation logic once, which is pretty trivial. No more fixture development is needed after that. It also provides template creator integrated with FitNesse to make tester's life a lot easier too.
ServiceFixture also provides database service fixtures(SelectFixture and UpdateFixture) which can be used to access databases directly from FitNesse test scripts. See Tutorial for more details.
Mock is a widely used technology in unit test domain. It shields exteral and unnecessary factors and helps developers focus on the specific function to be tested.
EasyMock is a well known mock tool which can create mock object for given interface at runtime. The mock object's behavior can be fine defined prior the test code in the test case. EasyMock is based on java.lang.reflect.Proxy, which can create dynamic proxy class/object according to the given interfaces. It has the inherent limitation from the Proxy. It can create mock object for given interface only.
Mocquer is a similar mock tool as EasyMock. With the help of Dunamis Project, it extends the function of EasyMock to support mock object creation for both class and interface.
p-unit
An open source framework for unit test and performance benchmark, which was initiated by Andrew Zhang, under Apache License v2.0. p-unit supports to run the same tests with single thread or multi-threads, tracks memory and time consumption, and generates the result in the form of plain text, image or pdf file.
RMock 2.0.0 is a Java mock object framework to use with jUnit. RMock has support for a setup-modify-run-verify workflow when writing jUnit tests. It integrates better with IDE refactoring support and allows designing classes and interfaces in a true test-first fashion.
ScalaCheck is a powerful tool for automatic unit testing of Scala and Java programs. It features automatic test case generation and minimization of failing test cases. ScalaCheck started out as a Scala port of the Haskell library QuickCheck, and has since evolved and been extended with features not found in Haskell QuickCheck.
SevenMock is a light-weight Java dynamic mock objects framework. It is unusual in that it places responsibility for verifying operation parameters directly on the unit test code. This enables the test designer to write very clear, precisely targeted tests and makes test failures easier to diagnose.