Starting off with MSTest v3, when you want to pass accurately two arrays, you now not ought to wrap the next array in an object array. Ahead of: The ClassInitialize attribute is known as proper just before your course is loaded (but following the static constructor) along with the ClassCleanup https://jaredonvqa.ampblogs.com/write-my-case-study-can-be-fun-for-anyone-72579187