diff --git a/plugins/devkit/README.md b/plugins/devkit/README.md
index 8cea1dbfacc9..b508c1cc7de1 100644
--- a/plugins/devkit/README.md
+++ b/plugins/devkit/README.md
@@ -3,6 +3,8 @@
 ## Inspections
 
 See `org.jetbrains.idea.devkit.inspections.DevKitInspectionUtil` for common utility methods.
+By default, files located in _test sources_ are not checked, 
+use `DevKitInspectionUtil.isAllowedIncludingTestSources()` to include them.
 
 Consider marking inspections with _safe-only_ fixes ready for _Code | Code Cleanup..._
 (`com.intellij.codeInspection.CleanupLocalInspectionTool`).
diff --git a/plugins/devkit/devkit-core/src/inspections/DevKitInspectionUtil.java b/plugins/devkit/devkit-core/src/inspections/DevKitInspectionUtil.java
index 42a41460f204..703910ebdb35 100644
--- a/plugins/devkit/devkit-core/src/inspections/DevKitInspectionUtil.java
+++ b/plugins/devkit/devkit-core/src/inspections/DevKitInspectionUtil.java
@@ -19,23 +19,30 @@ import java.util.function.Predicate;
 public final class DevKitInspectionUtil {
 
   static boolean isAllowedInPluginsOnly(@NotNull PsiFile file) {
-    return isAllowed(file, DevKitInspectionUtil::isPluginFile);
+    return isAllowed(file, false, DevKitInspectionUtil::isPluginFile);
   }
 
+  /**
+   * @see #isAllowedIncludingTestSources(PsiFile)
+   */
   public static boolean isAllowed(@NotNull PsiFile file) {
-    return isAllowed(file, __ -> true);
+    return isAllowed(file, false, __ -> true);
+  }
+
+  public static boolean isAllowedIncludingTestSources(@NotNull PsiFile file) {
+    return isAllowed(file, true, ___ -> true);
   }
 
   public static boolean isClassAvailable(@NotNull ProblemsHolder holder, @NonNls String classFqn) {
     return JavaPsiFacade.getInstance(holder.getProject()).findClass(classFqn, holder.getFile().getResolveScope()) != null;
   }
 
-  private static boolean isAllowed(@NotNull PsiFile file, @NotNull Predicate<? super PsiFile> predicate) {
+  private static boolean isAllowed(@NotNull PsiFile file, boolean allowedInTestSources, @NotNull Predicate<? super PsiFile> predicate) {
     if (ApplicationManager.getApplication().isUnitTestMode()) return true;  // always run in tests
 
     VirtualFile vFile = file.getVirtualFile();
     if (vFile == null) return false;
-    if (TestSourcesFilter.isTestSources(vFile, file.getProject())) return false;
+    if (!allowedInTestSources && TestSourcesFilter.isTestSources(vFile, file.getProject())) return false;
 
     if (IntelliJProjectUtil.isIntelliJPlatformProject(file.getProject())) {
       return predicate.test(file);