From fac207ce7c5582e64e1d62fcfbe470089fd1bd4b Mon Sep 17 00:00:00 2001
From: Alexander Udalov <Alexander.Udalov@jetbrains.com>
Date: Mon, 21 Aug 2017 13:48:58 +0300
Subject: [PATCH] Minor, improve error message in
 BuiltInDecompilerConsistencyTest

---
 .../decompiler/stubBuilder/BuiltInDecompilerConsistencyTest.kt | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/idea/tests/org/jetbrains/kotlin/idea/decompiler/stubBuilder/BuiltInDecompilerConsistencyTest.kt b/idea/tests/org/jetbrains/kotlin/idea/decompiler/stubBuilder/BuiltInDecompilerConsistencyTest.kt
index ed8d2d43921..0e572e89942 100644
--- a/idea/tests/org/jetbrains/kotlin/idea/decompiler/stubBuilder/BuiltInDecompilerConsistencyTest.kt
+++ b/idea/tests/org/jetbrains/kotlin/idea/decompiler/stubBuilder/BuiltInDecompilerConsistencyTest.kt
@@ -94,5 +94,6 @@ internal fun findDir(packageFqName: String, project: Project): VirtualFile {
         it.startsWith(packageFqName + ".") && "." !in it.substringAfter(packageFqName + ".")
     }
     val classes = classNameIndex.get(randomClassInPackage, project, GlobalSearchScope.allScope(project))
-    return classes.first().containingFile.virtualFile.parent
+    val firstClass = classes.firstOrNull() ?: error("No classes with this name found: $randomClassInPackage (package name $packageFqName)")
+    return firstClass.containingFile.virtualFile.parent
 }