Testing Multiple Scenarios

Sometimes you want to test a method using many values. You could create explicit unit-tests for each scenario you wish to test, but with SimplyVBUnit multiple test scenarios can easily be created by implementing the ITestCaseSource interface on a test class.

By implementing this interface, you are given the ability to define multiple scenarios for unit-tests that accept parameters in their method signature.

When ITestCaseSource is implemented, a set of cohesive tests can be defined.

Sometimes the assertion made in the test isn't the one needed for a specific scenario. One solution is to create another test method utilizing the specific assertion required. However, ITestCaseSource allows for return values from the test method and invoking a unique assertion constraint for each defined scenario.

An updated test method demonstrates utilizing a return value.

As you can see, creating multiple test scenarios can be done very easily, allowing you to focus on your code instead of building similar test methods.