Replaces usages of Assert.AreEqual, Assert.IsTrue, and similar assertions with new helper methods such as Assert.HasCount, Assert.IsEmpty, Assert.IsNull, and Assert.IsGreaterThanOrEqualTo across multiple test files. This improves test readability and consistency with updated assertion APIs.
Updated all unit tests to consistently use the expected value as the first argument in Assert.AreEqual calls. This improves readability and aligns with best practices for test assertions.
In particular:
- Use explicit types everywhere to improve clarity
- Use target-typed new() expression when target is explicit
- Use explicit discard for value-returning statements