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What is a merge in a version control system?
Merging means combining two different versions of the code into one version.
Who is responsible for the sizing / estimate of the product backlog?
The scrum guide says: 'The Developers who will be doing the work are responsible for the sizing. The Product Owner may influence the Developers by helping them understand and select trade-offs.'
What does code coverage show?
The ratio answer is wrong, because it doesn't say anything about the number of tests to lines of code, but it does say the percentage of lines of code that is being tested. Hence, the correct answer is code being exercised by tests.
What is pair programming?
Pair programming means that two developers are coding together and performing live peer review. This will enhance the affectivity as it leads to increased code quality.
What are two reasons to use mock objects in unit tests?
Mock objects are simulating the behavior of dependencies such as persistance layers or APIs. By mocking these you can be sure about what you are testing, and not accidentally testing the external dependency.
