Expand tests

[nic-hartley]

We want 100% coverage as close to right off the bat as possible. While this isn't strictly necessary for MVP, it makes coding a lot more comfortable. We should focus on unit tests, but if possible create integration tests as well.

[nic-hartley]

Let's do this once #2 / #19 is complete.

[nic-hartley]

Change of plans; we're focusing on integration tests now.

[zachtjones]

For testing frameworks, here are some good ones that I've used in other projects to much success:

• AssertJ, http://joel-costigliola.github.io/assertj/, which makes our assertions much cleaner
• JGiven, which enables any tests to fit into the Given/When/Then pattern
• JUnit5 parameterized tests, which allows us to cover all bases for a particular Unit/endpoint collection

JGiven will be this one if we use JUnit5 (which I'd recommend)

<dependency>
	<groupId>com.tngtech.jgiven</groupId>
	<artifactId>jgiven-junit5</artifactId>
	<version>0.16.1</version>
	<scope>test</scope>
</dependency>

[nic-hartley]

Some notes:

• JGiven, Spring, and JUnit 5 don't seem to work together at all.
• JaCoCo doesn't seem to integrate with JGiven and I have no idea why (I'm working on that now)