Karma is a browser test runner. The idea is that browsers do not have natively a concept of loading tests files, running them, and reporting results. What karma does is (roughly) : starting a small web server to serve “client-side” javascript files to be tested (1) also serve the “client-side” javascript files with the tests … Read more
The key difference, to me, is that integration tests reveal if a feature is working or is broken, since they stress the code in a scenario close to reality. They invoke one or more software methods or features and test if they act as expected. On the opposite, a Unit test testing a single method … Read more
A unit test is a test written by the programmer to verify that a relatively small piece of code is doing what it is intended to do. They are narrow in scope, they should be easy to write and execute, and their effectiveness depends on what the programmer considers to be useful. The tests are … Read more