Line Markers: Don't show test run line markers for top-level functions

#KT-13509 Fixed

idea/src/org/jetbrains/kotlin/idea/highlighter/KotlinTestRunLineMarkerContributor.kt

@@ -142,6 +142,8 @@ class KotlinTestRunLineMarkerContributor : RunLineMarkerContributor() {
 
         if (declaration !is KtClassOrObject && declaration !is KtNamedFunction) return null
 
+        if (declaration is KtNamedFunction && declaration.containingClassOrObject == null) return null
+
         // To prevent IDEA failing on red code
         val descriptor = declaration.resolveToDescriptorIfAny() ?: return null
 

idea/testData/multiModuleLineMarker/topLevelFunWithKotlinTest/common/common.kt

@@ -0,0 +1,6 @@
+// !CHECK_HIGHLIGHTING
+
+package kotlin.test
+
+annotation class Test
+annotation class Ignore

idea/testData/multiModuleLineMarker/topLevelFunWithKotlinTest/jvm/test.kt

@@ -0,0 +1,9 @@
+import kotlin.test.*
+
+@Test fun testFoo() {
+
+}
+
+@Ignore fun testFooWrong() {
+
+}

idea/tests/org/jetbrains/kotlin/idea/caches/resolve/MultiModuleLineMarkerTest.kt

@@ -110,6 +110,10 @@ class MultiModuleLineMarkerTest : AbstractMultiModuleHighlightingTest() {
                             })
     }
 
+    fun testTopLevelFunWithKotlinTest() {
+        doMultiPlatformTest(TargetPlatformKind.Jvm[JvmTarget.JVM_1_6])
+    }
+
     fun testSuspendImplInPlatformModules() {
         doMultiPlatformTest(TargetPlatformKind.Jvm[JvmTarget.JVM_1_6], TargetPlatformKind.JavaScript)
     }