If you have a section of code with one simple IF statement, how many tests will be needed to achieve 100% decision coverage?

To achieve 100% decision coverage for a section of code containing a simple IF statement, you need to consider both possible outcomes of that statement: true (when the condition is met) and false (when the condition is not met).

In decision coverage testing, the goal is to ensure that every distinct branch in the code is exercised during the testing process. For a simple IF statement, there are two paths: one when the condition evaluates to true and one when it evaluates to false. Therefore, you would need one test case to cover the true outcome and another test case to cover the false outcome.

This results in a total of two tests to achieve comprehensive decision coverage for that IF statement, ensuring that both branches are executed during the testing process.