mstest▌

Modern unit testing with MSTest 3.x/4.x using current APIs and best practices. \n \n Covers test class structure, lifecycle management, and the AAA (Arrange-Act-Assert) pattern with sealed classes and constructor-based initialization \n Provides comprehensive assertion APIs including equality, null checks, exception testing (Throws/ThrowsExactly), collections, strings, comparisons, and type assertions \n Supports data-driven tests via DataRow and DynamicData with ValueTuple and TestDataRow for t