How To Fix OO059 - Interfaces cannot be tested in isolation

SAP Error Message - Details

• Message type: E = Error

• Message class: OO - Class Builder/API

• Message number: 059

• Message text: Interfaces cannot be tested in isolation

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message OO059 - Interfaces cannot be tested in isolation ?

  The SAP error message OO059, which states "Interfaces cannot be tested in isolation," typically occurs when you are trying to test an interface in the ABAP Workbench (SE80 or SE37) without the necessary context or implementation that the interface requires. This error is often encountered when dealing with ABAP classes and interfaces, particularly when you are trying to execute a test for an interface that is not fully implemented or lacks the necessary dependencies.
  
  Cause:
  
  Incomplete Implementation: The interface you are trying to test may not have any implementing classes or methods defined.
  Dependencies: The interface may depend on other classes or interfaces that are not available or not implemented.
  Testing Context: The testing environment may not provide the necessary context for the interface to function correctly, as interfaces are meant to be implemented by classes.
  
  
  Solution:
  
  
  Implement the Interface: Ensure that there is at least one class that implements the interface you are trying to