I really enjoy Minitest and it's simplicity but I don't understand why I should use assert_equal instead of assert with the == operator.
If I look into the Implementation the assert_equal method does exactly the same as I said with the equal operator.
Why do I need this step in between and not just use it directly?
I also think that it won't be more readable just because of the equal there since == is pretty self explaining.
Usually you want assert_equal when you prefer clear failure messages.
When you write assert a == b and the test fails for any reason, the message would just say something along the lines of Assertion failed.
On the other hand, if you use assert_equal a, b a failure will show a message like Expected a to be equal to b which gives you a bit more detail about why the test failed.