What are mock objects in Java?

A Mock object is something used for unit testing. If you have an object whose methods you want to test, and those methods depend on some other object, you create a mock of the dependency rather than an actual instance of that dependency. This allows you to test your object in isolation. Common Java frameworks … Read more

How to measure test coverage in Go

Note that Go 1.2 (Q4 2013, rc1 is available) will now display test coverage results: One major new feature of go test is that it can now compute and, with help from a new, separately installed “go tool cover” program, display test coverage results. The cover tool is part of the go.tools subrepository. It can be installed by running The cover tool does two things. … Read more

Java Project: Failed to load ApplicationContext

Looks like you are using maven (src/main/java). In this case put the applicationContext.xml file in the src/main/resources directory. It will be copied in the classpath directory and you should be able to access it with From the Spring-Documentation: A plain path, for example “context.xml”, will be treated as a classpath resource from the same package in which the test class is … Read more

How does mockito when() invocation work?

The short answer is that in your example, the result of mock.method() will be a type-appropriate empty value; mockito uses indirection via proxying, method interception, and a shared instance of the MockingProgress class in order to determine whether an invocation of a method on a mock is for stubbing or replay of an existing stubbed behavior rather than passing … Read more