Fuzzing of dart:io Directory API.

tests/standalone/io/file_fuzz_test.dart

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 // 'fuzz' test the file APIs by providing unexpected type arguments. The test
 // passes if the VM does not crash.
 
 #import('dart:io');
 #import('dart:isolate');
 
-final typeMapping = const {
-  'null': null,
-  'int': 0,
-  'bigint': 18446744073709551617,
-  'String': 'a',
-  'FileMode': FileMode.READ,
-  'num': 0.50,
-  'List<int>': const [1, 2, 3],
-  'Map<String, int>': const { "a": 23 }
-};
-
-typePermutations(int argCount) {
-  var result = [];
-  if (argCount == 2) {
-    typeMapping.forEach((k, v) {
-      typeMapping.forEach((k2, v2) {
-        result.add([v, v2]);
-      });
-    });
-  } else {
-    Expect.isTrue(argCount == 3);
-    typeMapping.forEach((k, v) {
-      typeMapping.forEach((k2, v2) {
-        typeMapping.forEach((k3, v3) {
-          result.add([v, v2, v3]);
-        });
-      });
-    });
-  }
-  return result;
-}
-
-// Perform sync operation and ignore all exceptions.
-doItSync(Function f) {
-  try { f(); } catch (var e) {}
-}
-
-// Perform async operation and transform the future for the operation
-// into a future that never fails by treating errors as normal
-// completion.
-Future doItAsync(Function f) {
-  // Ignore value and errors.
-  var completer = new Completer();
-  var future = f();
-  future.handleException((e) {
-    completer.complete(true);
-    return true;
-  });
-  future.then((v) => completer.complete(true));
-  return completer.future;
-}
+#import('fuzz_support.dart');
 
 fuzzSyncMethods() {
   typeMapping.forEach((k, v) {
     doItSync(() {
       var f = new File(v);
       doItSync(f.existsSync);
       doItSync(f.createSync);
       doItSync(f.deleteSync);
       doItSync(f.directorySync);
       doItSync(f.lengthSync);
@@ skipping 94 matching lines @@
     temp.deleteRecursivelySync();
   });
 }
 
 main() {
   fuzzSyncMethods();
   fuzzAsyncMethods();
   fuzzSyncRandomAccessMethods();
   fuzzAsyncRandomAccessMethods();
 }