| <!DOCTYPE html> |
| <script src="../../resources/testharness.js"></script> |
| <script src="../../resources/testharnessreport.js"></script> |
| <script> |
| test(() => { |
| var getter_called = false; |
| var element = document.createElement("div"); |
| var element_style = element.style; |
| var descriptor = Object.getOwnPropertyDescriptor(HTMLElement.prototype, "style"); |
| |
| Object.defineProperty(element, "style", { |
| get: function () { |
| getter_called = true; |
| return element_style; |
| }, |
| set: descriptor.set |
| }); |
| |
| element.style = "color: green"; |
| |
| assert_true(getter_called, "Overridden getter should be called"); |
| assert_equals(element_style.color, "green", "Put forwarding still works"); |
| }, "Overriding getter of [PutForwards] attribute"); |
| |
| test(() => { |
| var setter_called = false; |
| var element = document.createElement("div"); |
| var element_style = element.style; |
| var descriptor = Object.getOwnPropertyDescriptor(CSSStyleDeclaration.prototype, "cssText"); |
| |
| Object.defineProperty(element_style, "cssText", { |
| get: descriptor.get, |
| set: function (v) { |
| setter_called = true; |
| descriptor.set.call(this, v); |
| } |
| }); |
| |
| element.style = "color: green"; |
| |
| assert_true(setter_called, "Overridden setter should be called"); |
| assert_equals(element_style.color, "green", "Put forwarding still works"); |
| }, "Overriding setter of [PutForwards] target attribute"); |
| |
| test(() => { |
| var element = document.createElement("div"); |
| var element_style = element.style; |
| var fake_style = { cssText: "original" }; |
| var descriptor = Object.getOwnPropertyDescriptor(HTMLElement.prototype, "style"); |
| |
| Object.defineProperty(element, "style", { |
| get: function () { |
| return fake_style; |
| }, |
| set: descriptor.set |
| }); |
| |
| element.style = "color: green"; |
| |
| assert_equals(element_style.cssText, "", "Original value intact"); |
| assert_equals(fake_style.cssText, "color: green", "Fake style object updated"); |
| }, "Overriding target of [PutForwards] attribute"); |
| |
| test(() => { |
| var element = document.createElement("div"); |
| var descriptor = Object.getOwnPropertyDescriptor(HTMLElement.prototype, "style"); |
| |
| Object.defineProperty(element, "style", { |
| get: function () { |
| throw "exception"; |
| }, |
| set: descriptor.set |
| }); |
| |
| assert_throws(null, () => element.style = "color: green"); |
| }, "Exception propagation from getter of [PutForwards] attribute"); |
| |
| test(() => { |
| var element = document.createElement("div"); |
| var element_style = element.style; |
| var descriptor = Object.getOwnPropertyDescriptor(CSSStyleDeclaration.prototype, "cssText"); |
| |
| Object.defineProperty(element_style, "cssText", { |
| get: descriptor.get, |
| set: function (v) { |
| throw "exception"; |
| } |
| }); |
| |
| assert_throws(null, () => element.style = "color: green"); |
| }, "Exception propagation from setter of [PutForwards] target attribute"); |
| |
| test(() => { |
| var element = document.createElement("div"); |
| var descriptor = Object.getOwnPropertyDescriptor(HTMLElement.prototype, "style"); |
| |
| Object.defineProperty(element, "style", { |
| get: function () { |
| return null; |
| }, |
| set: descriptor.set |
| }); |
| |
| assert_throws(new TypeError, () => element.style = "color: green"); |
| }, "TypeError when getter of [PutForwards] attribute returns non-object"); |
| </script> |
