JavaScriptCore-7601.1.46.3.tar.gz

[apple/javascriptcore.git] / tests / stress / unscopables.js

diff --git a/tests/stress/unscopables.js b/tests/stress/unscopables.js
new file mode 100644 (file)
index 0000000..b3bf8be
--- /dev/null
+++ b/tests/stress/unscopables.js
@@ -0,0 +1,239 @@
+function test(actual, expected) {
+    if (actual !== expected)
+        throw new Error('bad value: ' + actual);
+}
+
+(function () {
+    var array = [];
+    var unscopables = array[Symbol.unscopables];
+
+    test(typeof unscopables, "object");
+    test(unscopables.__proto__, undefined);
+    test(String(Object.keys(unscopables).sort()), "copyWithin,entries,fill,find,findIndex,keys,values");
+}());
+
+(function () {
+    var find = "Cocoa";
+    var forEach = "Hidden";
+    var array = [];
+    test(typeof array.find, "function");
+
+    with (array) {
+        test(typeof find, "string");
+        test(find, "Cocoa");
+        test(typeof forEach, "function");
+        test(__proto__, Array.prototype);  // array's unscopables.__proto__ is undefined => false.
+    }
+}());
+
+(function () {
+    var object = {
+        [Symbol.unscopables]: {
+            Cocoa: false,
+            Cappuccino: true
+        },
+
+        Cocoa: null,
+        Cappuccino: null
+    };
+
+    var Cocoa = "Cocoa";
+    var Cappuccino = "Cappuccino";
+    var toString = "toString";
+
+    with (object) {
+        test(Cocoa, null);
+        test(Cappuccino, "Cappuccino");
+        test(toString, "toString");  // object.toString is hidden by unscopables.toString.
+    }
+
+    object[Symbol.unscopables].Cocoa = true;
+
+    with (object) {
+        test(Cocoa, "Cocoa");
+        test(Cappuccino, "Cappuccino");
+    }
+}());
+
+(function () {
+    var unscopables = Object.create(null);
+    unscopables.Cocoa = false;
+    unscopables.Cappuccino = true;
+
+    var object = {
+        [Symbol.unscopables]: unscopables,
+        Cocoa: null,
+        Cappuccino: null,
+        Matcha: null
+    };
+
+    var Cocoa = "Cocoa";
+    var Cappuccino = "Cappuccino";
+    var Matcha = "Matcha";
+    var toString = "toString";
+
+    with (object) {
+        test(Cocoa, null);
+        test(Cappuccino, "Cappuccino");
+        test(Matcha, null);
+        test(toString, Object.prototype.toString);
+    }
+
+    object[Symbol.unscopables].Cocoa = true;
+    object[Symbol.unscopables].Cappuccino = false;
+    object[Symbol.unscopables].toString = true;
+
+    with (object) {
+        test(Cocoa, "Cocoa");
+        test(Cappuccino, null);
+        test(toString, "toString");
+        test(Matcha, null);
+    }
+}());
+
+(function () {
+    var proto = Object.create(null);
+    var unscopables = Object.create(proto);
+    unscopables.Cocoa = false;
+    unscopables.Cappuccino = true;
+
+    var object = {
+        [Symbol.unscopables]: unscopables,
+        Cocoa: null,
+        Cappuccino: null,
+        Matcha: null
+    };
+
+    var Cocoa = "Cocoa";
+    var Cappuccino = "Cappuccino";
+    var Matcha = "Matcha";
+    var toString = "toString";
+
+    with (object) {
+        test(Cocoa, null);
+        test(Cappuccino, "Cappuccino");
+        test(Matcha, null);
+        test(toString, Object.prototype.toString);
+    }
+
+    object[Symbol.unscopables].Cocoa = true;
+    object[Symbol.unscopables].Cappuccino = false;
+    object[Symbol.unscopables].toString = true;
+
+    with (object) {
+        test(Cocoa, "Cocoa");
+        test(Cappuccino, null);
+        test(toString, "toString");
+        test(Matcha, null);
+    }
+
+    proto.Matcha = true;
+
+    with (object) {
+        test(Cocoa, "Cocoa");
+        test(Cappuccino, null);
+        test(toString, "toString");
+        test(Matcha, "Matcha");
+    }
+}());
+
+(function () {
+    var object = {
+        get Cocoa() {
+            throw new Error("bad trap");
+        },
+        Cappuccino: null
+    };
+
+    object[Symbol.unscopables] = {
+        Cocoa: true,
+        Cappuccino: true
+    };
+
+    var Cocoa = "Cocoa";
+    var Cappuccino = "Cappuccino";
+    var toString = "toString";
+
+    with (object) {
+        test(Cocoa, "Cocoa");
+    }
+
+    object[Symbol.unscopables].Cocoa = false;
+
+    var error = null;
+    try {
+        with (object) {
+            Cocoa;
+        }
+    } catch (e) {
+        error = e;
+    }
+    test(String(error), "Error: bad trap");
+}());
+
+(function () {
+    var object = {
+        Cocoa: null,
+    };
+    Object.defineProperty(object, Symbol.unscopables, {
+        get: function () {
+            throw new Error("unscopables trap");
+        }
+    });
+
+    var Cocoa = "Cocoa";
+    var Cappuccino = "Cappuccino";
+
+    var error = null;
+    try {
+        with (object) {
+            Cocoa
+        }
+    } catch (e) {
+        error = e;
+    }
+    test(String(error), "Error: unscopables trap");
+
+    with (object) {
+        test(Cappuccino, "Cappuccino");
+    }
+}());
+
+(function () {
+    var object = {
+        [Symbol.unscopables]: {
+            get Cocoa() {
+                throw new Error("unscopables trap");
+            }
+        },
+        Cocoa: null,
+    };
+    var Cocoa = "Cocoa";
+    var Cappuccino = "Cappuccino";
+
+    var error = null;
+    try {
+        with (object) {
+            Cocoa
+        }
+    } catch (e) {
+        error = e;
+    }
+    test(String(error), "Error: unscopables trap");
+
+    with (object) {
+        test(Cappuccino, "Cappuccino");
+    }
+}());
+
+(function () {
+    var object = {
+        [Symbol.unscopables]: 42,
+        Cocoa: "OK",
+    };
+    var Cocoa = "Cocoa";
+
+    with (object) {
+        test(Cocoa, "OK");
+    }
+}());