Fix of KT-7130

libraries/stdlib/src/kotlin/io/files/Utils.kt

@@ -307,7 +307,7 @@ public fun File.copyRecursively(dst: File,
  *
  * @return true if the file or directory is successfully deleted, false otherwise.
  */
-public fun File.deleteRecursively(): Boolean = walkBottomUp().fold(exists(), { res, it -> res && it.delete() })
+public fun File.deleteRecursively(): Boolean = walkBottomUp().fold(exists(), { res, it -> it.delete() && res })
 
 /**
  * Returns an array of files and directories in the directory that match the specified [filter]

libraries/stdlib/test/io/Files.kt

@@ -62,6 +62,8 @@ class FilesTest {
     }
 
     class Walks {
+
+        companion object {
             fun createTestFiles(): File {
                 val basedir = createTempDir()
                 File(basedir, "1").mkdir()
@@ -75,6 +77,7 @@ class FilesTest {
                 File(basedir, "8/9.txt".separatorsToSystem()).createNewFile()
                 return basedir
             }
+        }
 
         test fun withSimple() {
             val basedir = createTestFiles()
@@ -791,6 +794,26 @@ class FilesTest {
         assert(!dir.deleteRecursively())
     }
     
+    test fun deleteRecursivelyWithFail() {
+        val basedir = Walks.createTestFiles()
+        val restricted = File(basedir, "1")
+        try {
+            if (restricted.setReadable(false)) {
+                if (File(basedir, "7.txt").setReadable(false)) {
+                    basedir.deleteRecursively()
+                    var i = 0
+                    for (file in basedir.walkTopDown()) {
+                        i++
+                    }
+                    assertEquals(7, i)
+                }
+            }
+        } finally {
+            restricted.setReadable(true)
+            basedir.deleteRecursively()
+        }
+    }
+
     test fun copyRecursively() {
         val src = createTempDir()
         val dst = createTempDir()