Import dom/ from web-platform-tests

third_party/WebKit/LayoutTests/imported/web-platform-tests/dom/nodes/Document-Element-getElementsByTagName.js

+function test_getElementsByTagName(context, element) {
+  // TODO: getElementsByTagName("*")
+  test(function() {
+    assert_false(context.getElementsByTagName("html") instanceof NodeList,
+                 "Should not return a NodeList")
+    assert_true(context.getElementsByTagName("html") instanceof HTMLCollection,
+                "Should return an HTMLCollection")
+  }, "Interfaces")
+
+  test(function() {
+    var firstCollection = context.getElementsByTagName("html"),
+        secondCollection = context.getElementsByTagName("html")
+    assert_true(firstCollection !== secondCollection ||
+                firstCollection === secondCollection)
+  }, "Caching is allowed")
+
+  test(function() {
+    var l = context.getElementsByTagName("nosuchtag")
+    l[5] = "foopy"
+    assert_equals(l[5], undefined)
+    assert_equals(l.item(5), null)
+  }, "Shouldn't be able to set unsigned properties on a HTMLCollection (non-strict mode)")
+
+  test(function() {
+    var l = context.getElementsByTagName("nosuchtag")
+    assert_throws(new TypeError(), function() {
+      "use strict";
+      l[5] = "foopy"
+    })
+    assert_equals(l[5], undefined)
+    assert_equals(l.item(5), null)
+  }, "Shouldn't be able to set unsigned properties on a HTMLCollection (strict mode)")
+
+  test(function() {
+    var l = context.getElementsByTagName("nosuchtag")
+    var fn = l.item;
+    assert_equals(fn, HTMLCollection.prototype.item);
+    l.item = "pass"
+    assert_equals(l.item, "pass")
+    assert_equals(HTMLCollection.prototype.item, fn);
+  }, "Should be able to set expando shadowing a proto prop (item)")
+
+  test(function() {
+    var l = context.getElementsByTagName("nosuchtag")
+    var fn = l.namedItem;
+    assert_equals(fn, HTMLCollection.prototype.namedItem);
+    l.namedItem = "pass"
+    assert_equals(l.namedItem, "pass")
+    assert_equals(HTMLCollection.prototype.namedItem, fn);
+  }, "Should be able to set expando shadowing a proto prop (namedItem)")
+
+  test(function() {
+    var t1 = element.appendChild(document.createElement("pre"));
+    t1.id = "x";
+    var t2 = element.appendChild(document.createElement("pre"));
+    t2.setAttribute("name", "y");
+    var t3 = element.appendChild(document.createElementNS("", "pre"));
+    t3.setAttribute("id", "z");
+    var t4 = element.appendChild(document.createElementNS("", "pre"));
+    t4.setAttribute("name", "w");
+    this.add_cleanup(function() {
+      element.removeChild(t1)
+      element.removeChild(t2)
+      element.removeChild(t3)
+      element.removeChild(t4)
+    });
+
+    var list = context.getElementsByTagName('pre');
+    var pre = list[0];
+    assert_equals(pre.id, "x");
+
+    var exposedNames = { 'x': 0, 'y': 1, 'z': 2 };
+    for (var exposedName in exposedNames) {
+      assert_equals(list[exposedName], list[exposedNames[exposedName]]);
+      assert_equals(list[exposedName], list.namedItem(exposedName));
+      assert_true(exposedName in list, "'" + exposedName + "' in list");
+      assert_true(list.hasOwnProperty(exposedName),
+                  "list.hasOwnProperty('" + exposedName + "')");
+    }
+
+    var unexposedNames = ["w"];
+    for (var unexposedName of unexposedNames) {
+      assert_false(unexposedName in list);
+      assert_false(list.hasOwnProperty(unexposedName));
+      assert_equals(list[unexposedName], undefined);
+      assert_equals(list.namedItem(unexposedName), null);
+    }
+
+    assert_array_equals(Object.getOwnPropertyNames(list).sort(),
+                        ["0", "1", "2", "3", "x", "y", "z"]);
+
+    var desc = Object.getOwnPropertyDescriptor(list, '0');
+    assert_equals(typeof desc, "object", "descriptor should be an object");
+    assert_true(desc.enumerable, "desc.enumerable");
+    assert_true(desc.configurable, "desc.configurable");
+
+    desc = Object.getOwnPropertyDescriptor(list, 'x');
+    assert_equals(typeof desc, "object", "descriptor should be an object");
+    assert_false(desc.enumerable, "desc.enumerable");
+    assert_true(desc.configurable, "desc.configurable");
+  }, "hasOwnProperty, getOwnPropertyDescriptor, getOwnPropertyNames")
+
+  test(function() {
+    assert_equals(document.createElementNS("http://www.w3.org/1999/xhtml", "i").localName, "i") // Sanity
+    var t = element.appendChild(document.createElementNS("http://www.w3.org/1999/xhtml", "I"))
+    this.add_cleanup(function() {element.removeChild(t)})
+    assert_equals(t.localName, "I")
+    assert_equals(t.tagName, "I")
+    assert_equals(context.getElementsByTagName("I").length, 0)
+    assert_equals(context.getElementsByTagName("i").length, 0)
+  }, "HTML element with uppercase tagName never matches in HTML Documents")
+
+  test(function() {
+    var t = element.appendChild(document.createElementNS("test", "st"))
+    this.add_cleanup(function() {element.removeChild(t)})
+    assert_array_equals(context.getElementsByTagName("st"), [t])
+    assert_array_equals(context.getElementsByTagName("ST"), [])
+  }, "Element in non-HTML namespace, no prefix, lowercase name")
+
+  test(function() {
+    var t = element.appendChild(document.createElementNS("test", "ST"))
+    this.add_cleanup(function() {element.removeChild(t)})
+    assert_array_equals(context.getElementsByTagName("ST"), [t])
+    assert_array_equals(context.getElementsByTagName("st"), [])
+  }, "Element in non-HTML namespace, no prefix, uppercase name")
+
+  test(function() {
+    var t = element.appendChild(document.createElementNS("test", "te:st"))
+    this.add_cleanup(function() {element.removeChild(t)})
+    assert_array_equals(context.getElementsByTagName("st"), [t])
+    assert_array_equals(context.getElementsByTagName("ST"), [])
+  }, "Element in non-HTML namespace, prefix, lowercase name")
+
+  test(function() {
+    var t = element.appendChild(document.createElementNS("test", "te:ST"))
+    this.add_cleanup(function() {element.removeChild(t)})
+    assert_array_equals(context.getElementsByTagName("ST"), [t])
+    assert_array_equals(context.getElementsByTagName("st"), [])
+    assert_array_equals(context.getElementsByTagName("te:st"), [])
+    assert_array_equals(context.getElementsByTagName("te:ST"), [])
+  }, "Element in non-HTML namespace, prefix, uppercase name")
+
+  test(function() {
+    var t = element.appendChild(document.createElement("aÇ"))
+    this.add_cleanup(function() {element.removeChild(t)})
+    assert_equals(t.localName, "aÇ")
+    assert_array_equals(context.getElementsByTagName("AÇ"), [t], "All uppercase input")
+    assert_array_equals(context.getElementsByTagName("aÇ"), [t], "Ascii lowercase input")
+    assert_array_equals(context.getElementsByTagName("aç"), [], "All lowercase input")
+  }, "Element in HTML namespace, no prefix, non-ascii characters in name")
+
+  test(function() {
+    var t = element.appendChild(document.createElementNS("test", "AÇ"))
+    this.add_cleanup(function() {element.removeChild(t)})
+    assert_array_equals(context.getElementsByTagName("AÇ"), [t])
+    assert_array_equals(context.getElementsByTagName("aÇ"), [])
+    assert_array_equals(context.getElementsByTagName("aç"), [])
+  }, "Element in non-HTML namespace, non-ascii characters in name")
+
+  test(function() {
+    var t = element.appendChild(document.createElementNS("http://www.w3.org/1999/xhtml", "test:aÇ"))
+    this.add_cleanup(function() {element.removeChild(t)})
+    assert_array_equals(context.getElementsByTagName("AÇ"), [t], "All uppercase input")
+    assert_array_equals(context.getElementsByTagName("aÇ"), [t], "Ascii lowercase input")
+    assert_array_equals(context.getElementsByTagName("aç"), [], "All lowercase input")
+  }, "Element in HTML namespace, prefix, non-ascii characters in name")
+
+  test(function() {
+    var t = element.appendChild(document.createElementNS("test", "test:AÇ"))
+    this.add_cleanup(function() {element.removeChild(t)})
+    assert_array_equals(context.getElementsByTagName("AÇ"), [t], "All uppercase input")
+    assert_array_equals(context.getElementsByTagName("aÇ"), [], "Ascii lowercase input")
+    assert_array_equals(context.getElementsByTagName("aç"), [], "All lowercase input")
+  }, "Element in non-HTML namespace, prefix, non-ascii characters in name")
+
+  test(function() {
+    var actual = context.getElementsByTagName("*");
+    var expected = [];
+    var get_elements = function(node) {
+      for (var i = 0; i < node.childNodes.length; i++) {
+        var child = node.childNodes[i];
+        if (child.nodeType === child.ELEMENT_NODE) {
+          expected.push(child);
+          get_elements(child);
+        }
+      }
+    }
+    get_elements(context);
+    assert_array_equals(actual, expected);
+  }, "getElementsByTagName('*')")
+}