Added PackageConfigImplicitUsageProvider for kotest 6

Author: sksamuel

src/main/kotlin/io/kotest/plugin/intellij/implicits/PackageConfigImplicitUsageProvider.kt

@@ -0,0 +1,42 @@
+package io.kotest.plugin.intellij.implicits
+
+import com.intellij.codeInsight.daemon.ImplicitUsageProvider
+import com.intellij.psi.PsiElement
+import io.kotest.plugin.intellij.psi.isSubclass
+import org.jetbrains.kotlin.asJava.classes.KtLightClass
+import org.jetbrains.kotlin.name.FqName
+import org.jetbrains.kotlin.psi.KtClass
+import org.jetbrains.kotlin.psi.KtClassOrObject
+import org.jetbrains.kotlin.psi.KtObjectDeclaration
+
+/**
+ * Allows disabling highlighting of certain elements as unused when such elements are not referenced
+ * from the code but are referenced in some other way.
+ *
+ * This [PackageConfigImplicitUsageProvider] will mark module config classes as used.
+ */
+class PackageConfigImplicitUsageProvider : ImplicitUsageProvider {
+
+   private val fqn = FqName("io.kotest.core.config.AbstractPackageConfig")
+
+   override fun isImplicitWrite(element: PsiElement): Boolean = false
+   override fun isImplicitRead(element: PsiElement): Boolean = false
+
+   /**
+    * Marks subclasses of AbstractProjectConfig as used.
+    */
+   override fun isImplicitUsage(element: PsiElement): Boolean {
+      return when (element) {
+         is KtClassOrObject -> element.isSubclass(fqn)
+         is KtLightClass -> {
+            val o = element.kotlinOrigin ?: return false
+            return when (o) {
+               is KtObjectDeclaration -> o.isSubclass(fqn)
+               is KtClass -> o.isSubclass(fqn)
+               else -> false
+            }
+         }
+         else -> false
+      }
+   }
+}

src/main/kotlin/io/kotest/plugin/intellij/implicits/SpecImplicitUsageProvider.kt

@@ -29,6 +29,6 @@ class SpecImplicitUsageProvider : ImplicitUsageProvider {
          }
          else -> null
       }
-      return ktclass?.isSpec() ?: false
+      return ktclass?.isSpec() == true
    }
 }

src/main/resources/META-INF/plugin.xml

@@ -73,6 +73,7 @@
 
       <implicitUsageProvider implementation="io.kotest.plugin.intellij.implicits.SpecImplicitUsageProvider"/>
       <implicitUsageProvider implementation="io.kotest.plugin.intellij.implicits.ProjectConfigImplicitUsageProvider"/>
+      <implicitUsageProvider implementation="io.kotest.plugin.intellij.implicits.PackageConfigImplicitUsageProvider"/>
       <implicitUsageProvider implementation="io.kotest.plugin.intellij.implicits.AutoScanUsageProvider"/>
 
       <testFinder implementation="io.kotest.plugin.intellij.KotestTestFinder"/>