dart:io | Ensure that Directory.list terminates even when symbolic links create loops in the file s…

tests/standalone/io/link_test.dart

Index: tests/standalone/io/link_test.dart
diff --git a/tests/standalone/io/link_test.dart b/tests/standalone/io/link_test.dart
index a20d82c722a7a0c12e1716a8a229ae4e2cc8d046..e4ecfbe28ce0dff90215e4896ee7de0a6713ab85 100644
--- a/tests/standalone/io/link_test.dart
+++ b/tests/standalone/io/link_test.dart
@@ -137,7 +137,34 @@ testCreateSync() {
   });
 }
 
+testCreateLoopingLink() {
+  Path base = new Path(new Directory('').createTempSync().path);
+  new Directory.fromPath(base.append('a/b/c')).create(recursive: true)
+  .then((_) =>
+    new Link.fromPath(base.append('a/b/c/d'))
+        .create(base.append('a/b').toNativePath()))
+  .then((_) =>
+    new Link.fromPath(base.append('a/b/c/e'))
+        .create(base.append('a').toNativePath()))
+  .then((_) =>
+    new Directory.fromPath(base.append('a'))
+        .list(recursive: true,followLinks: false)

[Søren Gjesse, 2013/04/10 11:33:23]

space after ,

[Bill Hesse, 2013/04/10 12:49:47]

Done.

+        .last)
+  .then((_) =>
+    // This directory listing must terminate, even though it contains loops.
+    new Directory.fromPath(base.append('a'))
+        .list(recursive: true,followLinks: true)

[Søren Gjesse, 2013/04/10 11:33:23]

ditto.

+        .last)
+  .then((_) =>
+    // This directory listing must terminate, even though it contains loops.
+    new Directory.fromPath(base.append('a/b/c'))
+        .list(recursive: true, followLinks: true)
+        .last)
+  .then((_) =>
+    new Directory.fromPath(base).delete(recursive: true));
+}
 
 main() {
   testCreateSync();
+  testCreateLoopingLink();
 }