Adding upstream version 86.0.1.upstream/86.0.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 35 insertions, 0 deletions

diff --git a/js/src/tests/test262/built-ins/Proxy/deleteProperty/targetdesc-is-configurable-target-is-not-extensible.js b/js/src/tests/test262/built-ins/Proxy/deleteProperty/targetdesc-is-configurable-target-is-not-extensible.js
new file mode 100644
index 0000000000..4662f2ca04
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Proxy/deleteProperty/targetdesc-is-configurable-target-is-not-extensible.js
@@ -0,0 +1,35 @@
+// Copyright (C) 2019 Aleksey Shvayka. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-proxy-object-internal-methods-and-internal-slots-delete-p
+description: >
+    Throw a TypeError exception if trap result is true, targetDesc is configurable,
+    and target is not extensible.
+info: |
+    [[Delete]] (P)
+
+    ...
+    13. Let extensibleTarget be ? IsExtensible(target).
+    14. If extensibleTarget is false, throw a TypeError exception.
+    ...
+features: [Proxy, Reflect, proxy-missing-checks]
+---*/
+
+var trapCalls = 0;
+var p = new Proxy({prop: 1}, {
+  deleteProperty: function(t, prop) {
+    Object.preventExtensions(t);
+    trapCalls++;
+    return true;
+  },
+});
+
+assert.throws(TypeError, function() {
+  Reflect.deleteProperty(p, "prop");
+});
+assert.sameValue(trapCalls, 1);
+
+assert(Reflect.deleteProperty(p, "nonExistent"));
+assert.sameValue(trapCalls, 2);
+
+reportCompare(0, 0);