Add [[Set]] tests

test/built-ins/Proxy/set/trap-is-missing-target-is-proxy.js

@@ -0,0 +1,50 @@
+// Copyright (C) 2020 Alexey 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-set-p-v-receiver
+description: >
+  If "set" trap is null or undefined, [[Set]] call is properly
+  forwarded to [[ProxyTarget]] (which is also a Proxy object).
+info: |
+  [[Set]] ( P, V, Receiver )
+
+  [...]
+  5. Let target be O.[[ProxyTarget]].
+  6. Let trap be ? GetMethod(handler, "set").
+  7. If trap is undefined, then
+    a. Return ? target.[[Set]](P, V, Receiver).
+features: [Proxy, Reflect]
+---*/
+
+var barValue;
+var plainObject = {
+  get foo() {},
+  set bar(value) {
+    barValue = value;
+  },
+};
+
+var plainObjectTarget = new Proxy(plainObject, {});
+var plainObjectProxy = new Proxy(plainObjectTarget, {});
+
+plainObjectProxy.bar = 1;
+assert.sameValue(barValue, 1);
+
+assert.throws(TypeError, function() {
+  "use strict";
+  plainObjectProxy.foo = 2;
+});
+
+
+var regExp = /(?:)/g;
+var regExpTarget = new Proxy(regExp, {});
+var regExpProxy = new Proxy(regExpTarget, {});
+
+assert(!Reflect.set(regExpProxy, "global", true));
+
+regExpProxy.lastIndex = 1;
+assert.sameValue(regExp.lastIndex, 1);
+
+regExpProxy.__proto__ = null;
+assert.sameValue(Object.getPrototypeOf(regExp), null);

test/built-ins/Proxy/set/trap-is-null-target-is-proxy.js

@@ -0,0 +1,49 @@
+// Copyright (C) 2020 Alexey 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-set-p-v-receiver
+description: >
+  If "set" trap is null or undefined, [[Set]] call is properly
+  forwarded to [[ProxyTarget]] (which is also a Proxy object).
+info: |
+  [[Set]] ( P, V, Receiver )
+
+  [...]
+  5. Let target be O.[[ProxyTarget]].
+  6. Let trap be ? GetMethod(handler, "set").
+  7. If trap is undefined, then
+    a. Return ? target.[[Set]](P, V, Receiver).
+features: [Proxy, Reflect]
+includes: [compareArray.js]
+---*/
+
+var array = [1, 2, 3];
+var arrayTarget = new Proxy(array, {});
+var arrayProxy = new Proxy(arrayTarget, {
+  set: null,
+});
+
+arrayProxy.length = 0;
+assert.compareArray(array, []);
+
+Object.preventExtensions(array);
+
+assert(!Reflect.set(arrayProxy, "foo", 2));
+assert.throws(TypeError, function() {
+  "use strict";
+  arrayProxy[0] = 3;
+});
+
+
+var string = new String("str");
+var stringTarget = new Proxy(string, {});
+var stringProxy = new Proxy(stringTarget, {
+  set: null,
+});
+
+stringProxy[4] = 1;
+assert.sameValue(string[4], 1);
+
+assert(!Reflect.set(stringProxy, "0", "s"));
+assert(!Reflect.set(stringProxy, "length", 3));

test/built-ins/Proxy/set/trap-is-undefined-target-is-proxy.js

@@ -0,0 +1,52 @@
+// Copyright (C) 2020 Alexey 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-set-p-v-receiver
+description: >
+  If "set" trap is null or undefined, [[Set]] call is properly
+  forwarded to [[ProxyTarget]] (which is also a Proxy object).
+info: |
+  [[Set]] ( P, V, Receiver )
+
+  [...]
+  5. Let target be O.[[ProxyTarget]].
+  6. Let trap be ? GetMethod(handler, "set").
+  7. If trap is undefined, then
+    a. Return ? target.[[Set]](P, V, Receiver).
+features: [Proxy, Reflect]
+---*/
+
+var func = function() {};
+var funcTarget = new Proxy(func, {});
+var funcProxy = new Proxy(funcTarget, {
+  set: undefined,
+});
+
+assert(Reflect.set(funcProxy, "prototype", null));
+assert.sameValue(func.prototype, null);
+
+assert(!Reflect.set(funcProxy, "length", 2));
+assert.throws(TypeError, function() {
+  "use strict";
+  funcProxy.name = "foo";
+});
+
+
+var trapCalls = 0;
+var target = new Proxy({}, {
+  set: function(_target, key) {
+    trapCalls++;
+    return key === "foo";
+  },
+});
+
+var proxy = new Proxy(target, {
+  set: undefined,
+});
+
+assert(Reflect.set(Object.create(proxy), "foo", 1));
+assert.sameValue(trapCalls, 1);
+
+assert(!Reflect.set(proxy, "bar", 2));
+assert.sameValue(trapCalls, 2);