Test-only usage in production code

Reports @TestOnly - and @VisibleForTesting-annotated methods and classes that are used in production code. Also reports usage of applying @TestOnly @VisibleForTesting to the same element.

The problems are not reported if such method or class is referenced from:

Code under the Test Sources folder
A test class (JUnit/TestNG)
Another @TestOnly-annotated method

Example (in production code):

  @TestOnly
  fun foo() { ... }

  fun main () {
    foo()
  }

Locating this inspection

By ID

Can be used to locate inspection in e.g. Qodana configuration files, where you can quickly enable or disable it, or adjust its settings.

TestOnlyProblems

Via Settings dialog

Path to the inspection settings via IntelliJ Platform IDE Settings dialog, when you need to adjust inspection settings directly from your IDE.

Settings or Preferences | Editor | Inspections | JVM languages | Test frameworks

Suppressing Inspection

You can suppress this inspection by placing the following comment marker before the code fragment where you no longer want messages from this inspection to appear:

//noinspection TestOnlyProblems

More detailed instructions as well as other ways and options that you have can be found in the product documentation:

IntelliJ IDEA 2025.2

Inspection Details
By default bundled with:	IntelliJ IDEA 2025.2, Qodana for JVM 2025.2,

Last modified: 18 September 2025