Test Methods Must Be In Test Classes
Impact area
Performance
Severity
Medium
Affected element
Apex Class
Rule ID
SF-OVERRIDE-BOTH
Impact
Test methods marked as a testMethod or annotated with @IsTest, but not residing in a test class should be moved to a proper class or have the @IsTest annotation added to the class. Support for tests inside functional classes was removed in Spring-13 (API Version 27.0), making classes that violate this rule fail compile-time.
Remediation
Create an apex class with @isTest annotation and move the method to the class.
Time to fix
30 min
References
This rule is linked to TestMethodsMustBeInTestClasses