Add m-esr52 at 52.6.0

1 files changed, 84 insertions, 0 deletions

diff --git a/js/src/tests/ecma_6/Reflect/propertyKeys.js b/js/src/tests/ecma_6/Reflect/propertyKeys.js
new file mode 100644
index 000000000..6495a96fd
--- /dev/null
+++ b/js/src/tests/ecma_6/Reflect/propertyKeys.js
@@ -0,0 +1,84 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/licenses/publicdomain/ */
+
+// Test corner cases involving Reflect methods' propertyKey arguments.
+
+// keys - Array of propertyKey values to be tested.
+//
+// Each element of this array is a record with these properties:
+//
+// *   value: a value that will be passed as a property key
+//     to the various Reflect methods;
+//
+// *   expected: (optional) the string or symbol that ToPropertyKey(value)
+//     should return. If this is omitted, ToPropertyKey(value) === value.
+//
+var keys = [
+    {value: null, expected: "null"},
+    {value: undefined, expected: "undefined"},
+    {value: true, expected: "true"},
+    {value: 42, expected: "42"},
+    {value: "string"},
+    {value: ""},
+    {value: "string with \0"},
+    {value: new String("ok"), expected: "ok"},
+    {value: Symbol("sym")},
+    {value: Symbol.iterator},
+    {value: Object(Symbol.for("comet")), expected: Symbol.for("comet")},
+    {
+        value: {
+            toString() { return "key"; },
+            valueOf() { return "bad"; }
+        },
+        expected: "key"
+    },
+    {
+        value: {
+            toString: undefined,
+            valueOf() { return "fallback"; }
+        },
+        expected: "fallback"
+    },
+    {
+        value: {
+            [Symbol.toPrimitive](hint) { return hint; }
+        },
+        expected: "string"
+    },
+    {
+        value: {
+            [Symbol.toPrimitive](hint) { return Symbol.for(hint); }
+        },
+        expected: Symbol.for("string")
+    }
+];
+
+for (var {value, expected} of keys) {
+    if (expected === undefined)
+        expected = value;
+
+    var obj = {};
+    assertEq(Reflect.defineProperty(obj, value, {value: 1, configurable: true}), true);
+    assertDeepEq(Reflect.ownKeys(obj), [expected]);
+    assertDeepEq(Reflect.getOwnPropertyDescriptor(obj, value),
+                 {value: 1,
+                  writable: false,
+                  enumerable: false,
+                  configurable: true});
+    assertEq(Reflect.deleteProperty(obj, value), true);
+    assertEq(Reflect.has(obj, value), false);
+    assertEq(Reflect.set(obj, value, 113), true);
+    assertEq(obj[expected], 113);
+    assertEq(Reflect.has(obj, value), true);
+    assertEq(Reflect.get(obj, value), 113);
+}
+
+// ToPropertyKey can throw.
+var exc = {};
+var badKey = {toString() { throw exc; }};
+var methodNames = ["defineProperty", "deleteProperty", "has", "get", "getOwnPropertyDescriptor", "set"];
+for (var name of methodNames) {
+    assertThrowsValue(() => Reflect[name]({}, badKey), exc);
+}
+
+reportCompare(0, 0);