Most TDD examples start out with a calculator. Ours will start here as well. But we’re not going to write a test for “2+2”. No sir, we’re going to test drive the calculator display. But what does it actually do? Read more…
I’ve been working with teams who use Spring as the basis of their programming for some time now. Spring, many times as a microservices development and runtime framework. Luckily (or not) they want to incorporate TDD (Test driven development) into Read more…
Now that we’ve covered some of Spring capabilities, we can explore possibilities beyond simple mocking. Instead of “regular” mocks (that we can set up in the integration tests), we can inject actual simulators. For our purpose, let’s define a simulator Read more…
Here’s the situation: We have a couple of configuration files we use for integration tests. Each of them is a different set of real and mock objects. Some of the objects have behaviors set on them (using Mockito.when) in the Read more…
Last time, in the first post in my new clean code series, we discussed how I torment my students with the ol’ Square and Rectangle trick in my Clean Code course, talking about Liskov Substitution Principle (LSP). At the end Read more…
In my Clean Code class, I go through this example about the Liskov Substitution Principle (LSP), part of the SOLID material. This example, the rectangle and the square, never fails to stump people, both experienced and less so. It starts out Read more…
After we understand how to use mocks in Spring in integration tests, let’s take a look at a setup for testing a REST service that uses a dependency we want to mock. API testing is a usual integration test scenario, Read more…
Let’s continue where we’ve left off – multiple configurations for integration tests. We use different configurations when we need to inject two different sets of objects. For example a real one and mocked one of the same type for different Read more…
First, a couple of words about Spring in general as a dependency injection framework. One of the best things in Spring is its simplicity of injection. Regardless of where you are, you pop an @Autowired annotation on a class variable (which Read more…
