1 files changed, 243 insertions, 0 deletions
diff --git a/js/src/tests/ecma_6/Class/compPropNames.js b/js/src/tests/ecma_6/Class/compPropNames.js
new file mode 100644
index 000000000..1c4064d8a
--- /dev/null
+++ b/js/src/tests/ecma_6/Class/compPropNames.js
@@ -0,0 +1,243 @@
+var BUGNUMBER = 924688;
+var summary = 'Computed Property Names';
+
+print(BUGNUMBER + ": " + summary);
+
+// Function definitions.
+function syntaxError (script) {
+    try {
+        Function(script);
+    } catch (e) {
+        if (e instanceof SyntaxError) {
+            return;
+        }
+    }
+    throw new Error('Expected syntax error: ' + script);
+}
+
+
+// Tests begin.
+
+assertThrowsInstanceOf(function() { var a = {[field1]: "a", [field2]: "b"}; }, ReferenceError);
+
+assertThrowsInstanceOf(function() {
+                           field1 = 1;
+                           var a = {[field1]: "a", [field2]: "b"};
+                       }, ReferenceError);
+
+var f1 = 1;
+var f2 = 2;
+var a = {[f1]: "a", [f2]: "b"};
+assertEq(a[1], "a");
+assertEq(a[2], "b");
+
+var a = {[f1]: "a", f2: "b"};
+assertEq(a[1], "a");
+assertEq(a.f2, "b");
+
+var a = {["f1"]: "a", [++f2]: "b"};
+assertEq(a.f1, "a");
+assertEq(a[3], "b");
+
+var a = {["f1"]: "a", f2: "b"};
+assertEq(a.f1, "a");
+assertEq(a.f2, "b");
+
+
+var i = 0;
+var a = {
+    ["foo" + ++i]: i,
+    ["foo" + ++i]: i,
+    ["foo" + ++i]: i
+};
+assertEq(a.foo1, 1);
+assertEq(a.foo2, 2);
+assertEq(a.foo3, 3);
+
+var expr = "abc";
+syntaxError("({[");
+syntaxError("({[expr");
+syntaxError("({[expr]");
+syntaxError("({[expr]})");
+syntaxError("({[expr] 0})");
+syntaxError("({[expr], 0})");
+syntaxError("[[expr]: 0]");
+syntaxError("({[expr]: name: 0})");
+syntaxError("({[1, 2]: 3})");  // because '1,2' is an Expression but not an AssignmentExpression
+syntaxError("({[1;]: 1})");    // and not an ExpressionStatement
+syntaxError("({[if (0) 0;]})");  // much less a Statement
+syntaxError("function f() { {[x]: 1} }");  // that's not even an ObjectLiteral
+syntaxError("function f() { [x]: 1 }");    // or that
+syntaxError('a = {[f1@]: "a", [f2]: "b"}'); // unexpected symbol at end of AssignmentExpression
+try { JSON.parse('{["a"]:4}'); } catch(e) {
+    if (!(e instanceof SyntaxError)) throw new Error('Expected syntax error');
+}
+
+// Property characteristics.
+a = { ["b"] : 4 };
+b = Object.getOwnPropertyDescriptor(a, "b");
+assertEq(b.configurable, true);
+assertEq(b.enumerable, true);
+assertEq(b.writable, true);
+assertEq(b.value, 4);
+
+// Setter and getter are not hit.
+Object.defineProperty(Object.prototype, "x", { set: function (x) { throw "FAIL"; },
+                                               get: function (x) { throw "FAIL"; } });
+var a = {["x"]: 0};
+assertEq(a.x, 0);
+
+a = {["x"]: 1, ["x"]: 2};
+assertEq(a.x, 2);
+a = {x: 1, ["x"]: 2};
+assertEq(a.x, 2);
+a = {["x"]: 1, x: 2};
+assertEq(a.x, 2);
+
+// Symbols
+var unique_sym = Symbol("1"), registered_sym = Symbol.for("2");
+a = { [unique_sym] : 2, [registered_sym] : 3 };
+assertEq(a[unique_sym], 2);
+assertEq(a[registered_sym], 3);
+
+// Same expression can be run several times to build objects with different property names.
+a = [];
+for (var i = 0; i < 3; i++) {
+    a[i] = {["foo" + i]: i};
+}
+assertEq(a[0].foo0, 0);
+assertEq(a[1].foo1, 1);
+assertEq(a[2].foo2, 2);
+
+// Following are stored in object's elements rather than slots.
+var i = 0;
+a = { [++i] : i,
+      [++i] : i,
+      [++i] : i,
+      [++i] : i,
+      [++i] : i,
+      [++i] : i,
+      [++i] : i,
+      [++i] : i
+}
+for (var i = 1; i < 9; i++)
+    assertEq(a[i], i);
+syntaxError("a.1");
+syntaxError("a.2");
+syntaxError("a.3");
+syntaxError("a.4");
+syntaxError("a.5");
+syntaxError("a.6");
+syntaxError("a.7");
+syntaxError("a.8");
+
+// Adding a single large index.
+var i = 0;
+a = { [++i] : i,
+      [++i] : i,
+      [++i] : i,
+      [++i] : i,
+      [++i] : i,
+      [++i] : i,
+      [++i] : i,
+      [++i] : i,
+      [3000] : 2999
+}
+for (var i = 1; i < 9; i++)
+    assertEq(a[i], i);
+assertEq(a[3000], 2999);
+
+// Defining several properties using eval.
+var code = "({";
+for (i = 0; i < 1000; i++)
+    code += "['foo' + " + i + "]: 'ok', "
+code += "['bar']: 'ok'});";
+var obj = eval(code);
+for (i = 0; i < 1000; i++)
+    assertEq(obj["foo" + i], "ok");
+assertEq(obj["bar"], "ok");
+
+// Can yield in a computed property name which is in a generator.
+function* g() {
+    var a = { [yield 1]: 2, [yield 2]: 3};
+    return a;
+}
+
+var it = g();
+var next = it.next();
+assertEq(next.done, false);
+assertEq(next.value, 1);
+next = it.next("hello");
+assertEq(next.done, false);
+assertEq(next.value, 2);
+next = it.next("world");
+assertEq(next.done, true);
+assertEq(next.value.hello, 2);
+assertEq(next.value.world, 3);
+
+// get and set.
+expr = "abc";
+syntaxError("({get [");
+syntaxError("({get [expr()");
+syntaxError("({get [expr]()");
+syntaxError("({get [expr]()})");
+syntaxError("({get [expr] 0 ()})");
+syntaxError("({get [expr], 0(})");
+syntaxError("[get [expr]: 0()]");
+syntaxError("({get [expr](: name: 0})");
+syntaxError("({get [1, 2](): 3})");
+syntaxError("({get [1;](): 1})");
+syntaxError("({get [if (0) 0;](){}})");
+syntaxError("({set [(a)");
+syntaxError("({set [expr(a)");
+syntaxError("({set [expr](a){}");
+syntaxError("({set [expr]}(a)");
+syntaxError("({set [expr](a), 0})");
+syntaxError("[set [expr](a): 0]");
+syntaxError("({set [expr](a): name: 0})");
+syntaxError("({set [1, 2](a) {return 3;}})");
+syntaxError("({set [1;](a) {return 1}})");
+syntaxError("({set [if (0) 0;](a){}})");
+syntaxError("function f() { {get [x](): 1} }");
+syntaxError("function f() { get [x](): 1 }");
+syntaxError("function f() { {set [x](a): 1} }");
+syntaxError("function f() { set [x](a): 1 }");
+f1 = "abc";
+syntaxError('a = {get [f1@](){}, set [f1](a){}}'); // unexpected symbol at end of AssignmentExpression
+syntaxError('a = {get@ [f1](){}, set [f1](a){}}'); // unexpected symbol after get
+syntaxError('a = {get [f1](){}, set@ [f1](a){}}'); // unexpected symbol after set
+
+expr = "hey";
+a = {get [expr]() { return 3; }, set[expr](v) { throw 2; }};
+assertEq(a.hey, 3);
+assertThrowsValue(() => { a.hey = 5; }, 2);
+
+// Symbols with duplicate get and set.
+expr = Symbol("hey");
+a = {get [expr]() { return 3; }, set[expr](v) { throw 2; },
+     set [expr] (w) { throw 4; }, get[expr](){return 5; }};
+assertEq(a[expr], 5);
+assertThrowsValue(() => { a[expr] = 7; }, 4);
+
+// expressions with side effects are called in the right order
+log = "";
+obj = {
+    "a": log += 'a',
+    get [log += 'b']() {},
+    [log += 'c']: log += 'd',
+    set [log += 'e'](a) {}
+};
+assertEq(log, "abcde");
+
+// assignment expressions, objects and regex in computed names
+obj = {
+    get [a = "hey"]() { return 1; },
+    get [a = {b : 4}.b]() { return 2; },
+    set [/x/.source](a) { throw 3; }
+}
+assertEq(obj.hey, 1);
+assertEq(obj[4], 2);
+assertThrowsValue(() => { obj.x = 7; }, 3);
+
+if (typeof reportCompare === 'function')
+    reportCompare(0, 0, "ok");