1 files changed, 74 insertions, 0 deletions
diff --git a/js/src/tests/non262/Intl/Collator/call.js b/js/src/tests/non262/Intl/Collator/call.js
new file mode 100644
index 0000000000..089764a2cb
--- /dev/null
+++ b/js/src/tests/non262/Intl/Collator/call.js
@@ -0,0 +1,74 @@
+// |reftest| skip-if(!this.hasOwnProperty("Intl"))
+
+function IsIntlService(c) {
+    return typeof c === "function" &&
+           c.hasOwnProperty("prototype") &&
+           c.prototype.hasOwnProperty("resolvedOptions");
+}
+
+function IsObject(o) {
+    return Object(o) === o;
+}
+
+function thisValues() {
+    const intlConstructors = Object.getOwnPropertyNames(Intl).map(name => Intl[name]).filter(IsIntlService);
+
+    return [
+        // Primitive values.
+        ...[undefined, null, true, "abc", Symbol(), 123],
+
+        // Object values.
+        ...[{}, [], /(?:)/, function(){}, new Proxy({}, {})],
+
+        // Intl objects.
+        ...[].concat(...intlConstructors.map(ctor => {
+            let args = [];
+            if (ctor === Intl.DisplayNames) {
+                // Intl.DisplayNames can't be constructed without any arguments.
+                args = [undefined, {type: "language"}];
+            }
+
+            return [
+                // Instance of an Intl constructor.
+                new ctor(...args),
+
+                // Instance of a subclassed Intl constructor.
+                new class extends ctor {}(...args),
+
+                // Object inheriting from an Intl constructor prototype.
+                Object.create(ctor.prototype),
+
+                // Intl object not inheriting from its default prototype.
+                Object.setPrototypeOf(new ctor(...args), Object.prototype),
+            ];
+        })),
+    ];
+}
+
+// Invoking [[Call]] for Intl.Collator always returns a new Collator instance.
+for (let thisValue of thisValues()) {
+    let obj = Intl.Collator.call(thisValue);
+    assertEq(Object.is(obj, thisValue), false);
+    assertEq(obj instanceof Intl.Collator, true);
+
+    // Ensure Intl.[[FallbackSymbol]] wasn't installed on |thisValue|.
+    if (IsObject(thisValue))
+        assertEqArray(Object.getOwnPropertySymbols(thisValue), []);
+}
+
+// Intl.Collator doesn't use the legacy Intl constructor compromise semantics.
+for (let thisValue of thisValues()) {
+    // Ensure instanceof operator isn't invoked for Intl.Collator.
+    Object.defineProperty(Intl.Collator, Symbol.hasInstance, {
+        get() {
+            assertEq(false, true, "@@hasInstance operator called");
+        }, configurable: true
+    });
+    let obj = Intl.Collator.call(thisValue);
+    delete Intl.Collator[Symbol.hasInstance];
+    assertEq(Object.is(obj, thisValue), false);
+    assertEq(obj instanceof Intl.Collator, true);
+}
+
+if (typeof reportCompare === "function")
+    reportCompare(true, true);