| // Copyright (c) 2013, 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. |
| |
| // @dart = 2.9 |
| |
| import 'package:expect/expect.dart'; |
| import 'package:async_helper/async_helper.dart'; |
| import 'dart:async'; |
| |
| main() { |
| // Unique object. |
| var baz = new Mimic(new Object()); |
| // Not so unique object that thinks it's the same as baz. |
| var mimic = new Mimic(baz.original); |
| |
| // runGuarded calls run, captures the synchronous error (if any) and |
| // gives that one to handleUncaughtError. |
| |
| Expect.identical(Zone.root, Zone.current); |
| |
| // Create a map with various key types. |
| Map zoneValues = new Map(); |
| zoneValues[#foo] = 499; |
| zoneValues["bar"] = []; |
| zoneValues[baz] = "baz"; |
| zoneValues[0] = "zero!"; |
| zoneValues[null] = baz; |
| |
| Zone forked = Zone.current.fork(zoneValues: zoneValues); |
| |
| // Values are not present when not inside the zone. |
| Expect.identical(Zone.root, Zone.current); |
| Expect.isNull(Zone.current[#foo]); |
| Expect.isNull(Zone.current["bar"]); |
| Expect.isNull(Zone.current[baz]); |
| Expect.isNull(Zone.current[mimic]); |
| Expect.isNull(Zone.current[0]); |
| Expect.isNull(Zone.current[null]); |
| Expect.isNull(Zone.current["qux"]); |
| |
| // Changing the original map has no effect after the zone is created. |
| zoneValues[#foo] = -1; |
| |
| // Values are available directly on the zone. |
| Expect.equals(499, forked[#foo]); |
| Expect.listEquals([], forked["bar"]); |
| Expect.equals("baz", forked[baz]); |
| Expect.equals("baz", forked[mimic]); |
| Expect.equals("zero!", forked[0]); |
| Expect.equals("zero!", forked[0.0]); // Lookup uses equality. |
| Expect.equals("zero!", forked[-0.0]); |
| Expect.equals(baz, forked[null]); |
| Expect.isNull(forked["qux"]); |
| |
| forked.run(() { |
| Expect.identical(forked, Zone.current); // Sanity check. |
| // Values are present on current when inside zone. |
| Expect.equals(499, Zone.current[#foo]); |
| Expect.listEquals([], Zone.current["bar"]); |
| Expect.equals("baz", Zone.current[baz]); |
| Expect.equals("baz", Zone.current[mimic]); |
| Expect.equals("zero!", Zone.current[0]); |
| Expect.equals("zero!", Zone.current[0.0]); // Lookup uses equality. |
| Expect.equals("zero!", Zone.current[-0.0]); |
| Expect.equals(baz, Zone.current[null]); |
| Expect.isNull(Zone.current["qux"]); |
| }); |
| |
| // Values are still not present when not inside the zone. |
| Expect.identical(Zone.root, Zone.current); |
| Expect.isNull(Zone.current[#foo]); |
| Expect.isNull(Zone.current["bar"]); |
| Expect.isNull(Zone.current[baz]); |
| Expect.isNull(Zone.current[mimic]); |
| Expect.isNull(Zone.current[0]); |
| Expect.isNull(Zone.current[null]); |
| Expect.isNull(Zone.current["qux"]); |
| |
| // Modifying the stored values work as expected. |
| zoneValues["bar"].add(42); |
| |
| forked.run(() { |
| Expect.identical(forked, Zone.current); // Sanity check. |
| // Values are still there when inside the zone. The list was modified. |
| Expect.equals(499, Zone.current[#foo]); |
| Expect.listEquals([42], Zone.current["bar"]); |
| Expect.equals("baz", Zone.current[baz]); |
| Expect.equals("baz", Zone.current[mimic]); |
| Expect.equals("zero!", Zone.current[0]); |
| Expect.equals(baz, Zone.current[null]); |
| Expect.isNull(Zone.current["qux"]); |
| }); |
| |
| // Creating a further nested zone with new values allows keeping, overriding, |
| // and shadowing existing values from the outer zone. |
| zoneValues = new Map(); |
| zoneValues[#foo] = -499; // Values can be overridden. |
| zoneValues["bar"] = null; // Values can be changed to null. |
| zoneValues["qux"] = 99; // Values can be added |
| // Overriding with equal, but not identical, key is possible. |
| zoneValues[mimic] = "floo"; |
| zoneValues[0.0] = "zero!ZERO!"; |
| |
| Zone forkedChild = forked.fork(zoneValues: zoneValues); |
| |
| // New values available on zone. |
| Expect.equals(-499, forkedChild[#foo]); // Overridden. |
| Expect.isNull(forkedChild["bar"]); // Overridden to null. |
| Expect.equals("floo", forkedChild[baz]); // Overridden by mimic. |
| Expect.equals("floo", forkedChild[mimic]); // Now recognizes mimic. |
| Expect.equals("zero!ZERO!", forkedChild[0]); // Overridden by 0.0. |
| Expect.equals("zero!ZERO!", forkedChild[0.0]); // Overriding 0. |
| Expect.equals(baz, forkedChild[null]); // Inherited. |
| Expect.equals(99, forkedChild["qux"]); // Added. |
| |
| forkedChild.run(() { |
| Expect.identical(forkedChild, Zone.current); // Sanity check. |
| // New values available on current zone when the zone is current. |
| Expect.equals(-499, Zone.current[#foo]); // Overridden. |
| Expect.isNull(Zone.current["bar"]); // Overridden to null. |
| Expect.equals("floo", Zone.current[baz]); // Overridden by mimic. |
| Expect.equals("floo", Zone.current[mimic]); // Now recognizes mimic. |
| Expect.equals("zero!ZERO!", Zone.current[0]); // Overridden by 0.0. |
| Expect.equals("zero!ZERO!", Zone.current[0.0]); // Overriding 0. |
| Expect.equals(baz, Zone.current[null]); // Inherited. |
| Expect.equals(99, Zone.current["qux"]); // Added. |
| }); |
| |
| // Parent zone values are unchanged. |
| Expect.equals(499, forked[#foo]); |
| Expect.listEquals([42], forked["bar"]); |
| Expect.equals("baz", forked[baz]); |
| Expect.equals("baz", forked[mimic]); |
| Expect.equals("zero!", forked[0]); |
| Expect.equals("zero!", forked[0.0]); // Lookup uses equality. |
| Expect.equals("zero!", forked[-0.0]); |
| Expect.equals(baz, forked[null]); |
| Expect.isNull(forked["qux"]); |
| } |
| |
| // Class of objects that consider themselves equal to their originals. |
| // Sees through mimickry. |
| class Mimic { |
| final Object original; |
| Mimic(this.original); |
| int get hashCode => original.hashCode; |
| bool operator ==(Object other) => |
| (other is Mimic) ? this == other.original : original == other; |
| } |