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Why is it not a good idea to write a unit test that connects to a database for test data?
Unit testing is not intended to test the complete functionality of an application. It is meant to make sure that definable modules of code work as expected. To test an application it is not enough to use unit tests. You must also perform functional testing and regression testing.
Should helper methods be unit tested?
If you want to test Helper methods you can change them from private but you might consider this. You should not unit test private details of your implementation mainly because it might change due to refactoring and “break” your test.
Can protected methods be unit tested?
Protected methods form a different contract between your class and its future children, so you should really be testing it to a similar extent as your public interface to ensure that the contract is well defined and exercised. No! Only test interfaces.
How to do unit testing without assertions in Java?
If you have some explicit requirement that the code under test doesn’t throw an exception and you want to explicitly call out this fact (tests as requirements docs) then I would do something like this: try { unitUnderTest.DoWork () } catch { Assert.Fail (“code should never throw exceptions but failed with …”) }
When do you not use assert.fail ( )?
If you’re writing a test that just fails, and then writing the code for it, then writing the test. This isn’t Test Driven Development. Technically, Assert.fail() shouldn’t be needed if you’re using test driven development correctly.
What can unit test frameworks be used for?
Simply stated, they are software tools to support writing and running unit tests, including a foundation on which to build tests and the functionality to execute the tests and report their results. They are not solely tools for testing; they can also be used as development tools on a par with preprocessors and debuggers.
When to use multiple asserts in a unit test?
When introducing multiple asserts into a test case, it is not guaranteed that all of the asserts will be executed. In most unit testing frameworks, once an assertion fails in a unit test, the proceeding tests are automatically considered to be failing. This can be confusing as functionality that is actually working, will be shown as failing.