dataset-binding.window.js

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This WPT test may be referenced by the following Test IDs:
- /html/dom/elements/global-attributes/dataset-binding.window.html - WPT Dashboard Interop Dashboard

[9, "x"].forEach(function(key) {

  test(function() {

    var element = document.createElement("div");

    var dataset = element.dataset;

    var value = "value for " + this.name;

    assert_equals(dataset[key], undefined);

    element.setAttribute("data-" + key, value);

    assert_equals(element.getAttribute("data-" + key), value);

    assert_equals(dataset[key], value);

    var propdesc = Object.getOwnPropertyDescriptor(dataset, key);

    assert_not_equals(propdesc, undefined);

    assert_equals(propdesc.value, value);

    assert_true(propdesc.writable);

    assert_true(propdesc.enumerable);

    assert_true(propdesc.configurable);

  }, "Getting property descriptor for key " + key);

  test(function() {

    var element = document.createElement("div");

    var dataset = element.dataset;

    var proto = "proto getter for " + this.name;

    var calledSetter = [];

    Object.defineProperty(DOMStringMap.prototype, key, {

      "get": function() { return proto; },

      "set": this.unreached_func("Should not call [[Set]] on prototype"),

      "configurable": true,

});

    this.add_cleanup(function() {

      delete DOMStringMap.prototype[key];

});

    var value = "value for " + this.name;

    assert_equals(dataset[key], proto);

    assert_equals(element.getAttribute("data-" + key), null);

    assert_equals(dataset[key] = value, value);

    assert_equals(dataset[key], value);

    assert_equals(element.getAttribute("data-" + key), value);

  }, "Setting property for key " + key + " with accessor property on prototype");

});