jr. dev attempt at writing j-unit tests for utility classes

[deseraekaufman]

To begin I would like to say, I learned SO much while working on this, it was a valuable experience just in that regard alone.
Although I was not able to complete the task as assigned, I spent quite a bit of time on it and would like to share where I am at so far.

I have worked with J-unit testing, although my experience so far has been quite basic.
These utility classes contain some syntax that is a bit more advanced than what I have seen, so while
my attempts at writing these tests might look pitiful, I would like to explain my thought processes
and all the things that I have learned while tackling this assessment.

Glancing through the project at first, I was pretty overwhelmed - it is more complex than projects I've worked on, but decided to give it a shot anyway and tackle would I could. I went through much of the code and commented on new things I learned, as well as explaining concepts as I understand them at my junior level.

Hopefully you get a sense of where I am as a developer, although I haven't much experience yet, I am very eager to learn and tackle new challenges. Thank you for giving me that opportunity!

Here is an example of some of the tests that I have written in my experience.

method to be tested:

public Map<String, Integer> getCount(String[] words) {
	Map<String, Integer> output = new HashMap<>();
	if (words != null) {
		for (String word : words) {
			if (!output.containsKey(word)) {
				output.put(word, 1);
			} else {
				output.put(word, output.get(word) + 1);
			}
		}
	}
	return output;
}

}

my test:
WordCount testObj = new WordCount();
@test
public void test_word_count_happy_path(){

    String[] testArray = {"ba","ba","black","sheep"};

    Map<String,Integer> testMap = Map.ofEntries(
            Map.entry("ba",2),
            Map.entry("black",1),
            Map.entry("sheep",1));

    Map<String,Integer> resultMap = testObj.getCount(testArray);

    Assert.assertEquals(testMap,resultMap);
}