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Terminology
Subject - The thing you are performing checks on. Subject Name - What you name the subject. Verification - The check(s) you are performing. For example, BeNotNull() is a verification. Assertion Kind - The kind or flavor of assertion: Test, Argument, or Operation Assertion - The subject, assertion kind, and verifications. For example: As a Test assertion, I assert that the subject X, named "MyValue" is greater than 5 (verification).