
PASS a: Define a customized built-in element
FAIL a: Operator 'new' should instantiate a customized built-in element Illegal constructor
FAIL a: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLAnchorElement {}" but got function "function HTMLAnchorElement() {
    [native code]
}"
FAIL a: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLAnchorElement {}" but got function "function HTMLAnchorElement() {
    [native code]
}"
PASS abbr: Define a customized built-in element
PASS abbr: Operator 'new' should instantiate a customized built-in element
FAIL abbr: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLElement {}" but got function "function HTMLElement() {
    [native code]
}"
FAIL abbr: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLElement {}" but got function "function HTMLElement() {
    [native code]
}"
PASS address: Define a customized built-in element
PASS address: Operator 'new' should instantiate a customized built-in element
FAIL address: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLElement {}" but got function "function HTMLElement() {
    [native code]
}"
FAIL address: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLElement {}" but got function "function HTMLElement() {
    [native code]
}"
PASS area: Define a customized built-in element
FAIL area: Operator 'new' should instantiate a customized built-in element Illegal constructor
FAIL area: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLAreaElement {}" but got function "function HTMLAreaElement() {
    [native code]
}"
FAIL area: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLAreaElement {}" but got function "function HTMLAreaElement() {
    [native code]
}"
PASS article: Define a customized built-in element
PASS article: Operator 'new' should instantiate a customized built-in element
FAIL article: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLElement {}" but got function "function HTMLElement() {
    [native code]
}"
FAIL article: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLElement {}" but got function "function HTMLElement() {
    [native code]
}"
PASS aside: Define a customized built-in element
PASS aside: Operator 'new' should instantiate a customized built-in element
FAIL aside: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLElement {}" but got function "function HTMLElement() {
    [native code]
}"
FAIL aside: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLElement {}" but got function "function HTMLElement() {
    [native code]
}"
PASS audio: Define a customized built-in element
FAIL audio: Operator 'new' should instantiate a customized built-in element Illegal constructor
FAIL audio: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLAudioElement {}" but got function "function HTMLAudioElement() {
    [native code]
}"
FAIL audio: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLAudioElement {}" but got function "function HTMLAudioElement() {
    [native code]
}"
PASS b: Define a customized built-in element
PASS b: Operator 'new' should instantiate a customized built-in element
FAIL b: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLElement {}" but got function "function HTMLElement() {
    [native code]
}"
FAIL b: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLElement {}" but got function "function HTMLElement() {
    [native code]
}"
PASS base: Define a customized built-in element
FAIL base: Operator 'new' should instantiate a customized built-in element Illegal constructor
FAIL base: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLBaseElement {}" but got function "function HTMLBaseElement() {
    [native code]
}"
FAIL base: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLBaseElement {}" but got function "function HTMLBaseElement() {
    [native code]
}"
PASS bdi: Define a customized built-in element
PASS bdi: Operator 'new' should instantiate a customized built-in element
FAIL bdi: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLElement {}" but got function "function HTMLElement() {
    [native code]
}"
FAIL bdi: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLElement {}" but got function "function HTMLElement() {
    [native code]
}"
PASS bdo: Define a customized built-in element
PASS bdo: Operator 'new' should instantiate a customized built-in element
FAIL bdo: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLElement {}" but got function "function HTMLElement() {
    [native code]
}"
FAIL bdo: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLElement {}" but got function "function HTMLElement() {
    [native code]
}"
PASS blockquote: Define a customized built-in element
FAIL blockquote: Operator 'new' should instantiate a customized built-in element Illegal constructor
FAIL blockquote: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLQuoteElement {}" but got function "function HTMLQuoteElement() {
    [native code]
}"
FAIL blockquote: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLQuoteElement {}" but got function "function HTMLQuoteElement() {
    [native code]
}"
PASS body: Define a customized built-in element
FAIL body: Operator 'new' should instantiate a customized built-in element Illegal constructor
FAIL body: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLBodyElement {}" but got function "function HTMLBodyElement() {
    [native code]
}"
FAIL body: document parser should instantiate a customized built-in element assert_equals: expected function "class extends HTMLBodyElement {}" but got function "function HTMLBodyElement() {
    [native code]
}"
PASS br: Define a customized built-in element
FAIL br: Operator 'new' should instantiate a customized built-in element Illegal constructor
FAIL br: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLBRElement {}" but got function "function HTMLBRElement() {
    [native code]
}"
FAIL br: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLBRElement {}" but got function "function HTMLBRElement() {
    [native code]
}"
PASS button: Define a customized built-in element
FAIL button: Operator 'new' should instantiate a customized built-in element Illegal constructor
FAIL button: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLButtonElement {}" but got function "function HTMLButtonElement() {
    [native code]
}"
FAIL button: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLButtonElement {}" but got function "function HTMLButtonElement() {
    [native code]
}"
PASS canvas: Define a customized built-in element
FAIL canvas: Operator 'new' should instantiate a customized built-in element Illegal constructor
FAIL canvas: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLCanvasElement {}" but got function "function HTMLCanvasElement() {
    [native code]
}"
FAIL canvas: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLCanvasElement {}" but got function "function HTMLCanvasElement() {
    [native code]
}"
PASS caption: Define a customized built-in element
FAIL caption: Operator 'new' should instantiate a customized built-in element Illegal constructor
FAIL caption: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLTableCaptionElement {}" but got function "function HTMLTableCaptionElement() {
    [native code]
}"
FAIL caption: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLTableCaptionElement {}" but got function "function HTMLTableCaptionElement() {
    [native code]
}"
PASS cite: Define a customized built-in element
PASS cite: Operator 'new' should instantiate a customized built-in element
FAIL cite: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLElement {}" but got function "function HTMLElement() {
    [native code]
}"
FAIL cite: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLElement {}" but got function "function HTMLElement() {
    [native code]
}"
PASS code: Define a customized built-in element
PASS code: Operator 'new' should instantiate a customized built-in element
FAIL code: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLElement {}" but got function "function HTMLElement() {
    [native code]
}"
FAIL code: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLElement {}" but got function "function HTMLElement() {
    [native code]
}"
PASS col: Define a customized built-in element
FAIL col: Operator 'new' should instantiate a customized built-in element Illegal constructor
FAIL col: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLTableColElement {}" but got function "function HTMLTableColElement() {
    [native code]
}"
FAIL col: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLTableColElement {}" but got function "function HTMLTableColElement() {
    [native code]
}"
PASS colgroup: Define a customized built-in element
FAIL colgroup: Operator 'new' should instantiate a customized built-in element Illegal constructor
FAIL colgroup: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLTableColElement {}" but got function "function HTMLTableColElement() {
    [native code]
}"
FAIL colgroup: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLTableColElement {}" but got function "function HTMLTableColElement() {
    [native code]
}"
PASS data: Define a customized built-in element
FAIL data: Operator 'new' should instantiate a customized built-in element Illegal constructor
FAIL data: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLDataElement {}" but got function "function HTMLDataElement() {
    [native code]
}"
FAIL data: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLDataElement {}" but got function "function HTMLDataElement() {
    [native code]
}"
PASS dd: Define a customized built-in element
PASS dd: Operator 'new' should instantiate a customized built-in element
FAIL dd: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLElement {}" but got function "function HTMLElement() {
    [native code]
}"
FAIL dd: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLElement {}" but got function "function HTMLElement() {
    [native code]
}"
PASS del: Define a customized built-in element
FAIL del: Operator 'new' should instantiate a customized built-in element Illegal constructor
FAIL del: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLModElement {}" but got function "function HTMLModElement() {
    [native code]
}"
FAIL del: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLModElement {}" but got function "function HTMLModElement() {
    [native code]
}"
PASS details: Define a customized built-in element
FAIL details: Operator 'new' should instantiate a customized built-in element Illegal constructor
FAIL details: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLDetailsElement {}" but got function "function HTMLDetailsElement() {
    [native code]
}"
FAIL details: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLDetailsElement {}" but got function "function HTMLDetailsElement() {
    [native code]
}"
PASS dfn: Define a customized built-in element
PASS dfn: Operator 'new' should instantiate a customized built-in element
FAIL dfn: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLElement {}" but got function "function HTMLElement() {
    [native code]
}"
FAIL dfn: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLElement {}" but got function "function HTMLElement() {
    [native code]
}"
PASS div: Define a customized built-in element
FAIL div: Operator 'new' should instantiate a customized built-in element Illegal constructor
FAIL div: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLDivElement {}" but got function "function HTMLDivElement() {
    [native code]
}"
FAIL div: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLDivElement {}" but got function "function HTMLDivElement() {
    [native code]
}"
PASS dl: Define a customized built-in element
FAIL dl: Operator 'new' should instantiate a customized built-in element Illegal constructor
FAIL dl: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLDListElement {}" but got function "function HTMLDListElement() {
    [native code]
}"
FAIL dl: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLDListElement {}" but got function "function HTMLDListElement() {
    [native code]
}"
PASS dt: Define a customized built-in element
PASS dt: Operator 'new' should instantiate a customized built-in element
FAIL dt: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLElement {}" but got function "function HTMLElement() {
    [native code]
}"
FAIL dt: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLElement {}" but got function "function HTMLElement() {
    [native code]
}"
PASS em: Define a customized built-in element
PASS em: Operator 'new' should instantiate a customized built-in element
FAIL em: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLElement {}" but got function "function HTMLElement() {
    [native code]
}"
FAIL em: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLElement {}" but got function "function HTMLElement() {
    [native code]
}"
PASS embed: Define a customized built-in element
FAIL embed: Operator 'new' should instantiate a customized built-in element Illegal constructor
FAIL embed: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLEmbedElement {}" but got function "function HTMLEmbedElement() {
    [native code]
}"
FAIL embed: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLEmbedElement {}" but got function "function HTMLEmbedElement() {
    [native code]
}"
PASS fieldset: Define a customized built-in element
FAIL fieldset: Operator 'new' should instantiate a customized built-in element Illegal constructor
FAIL fieldset: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLFieldSetElement {}" but got function "function HTMLFieldSetElement() {
    [native code]
}"
FAIL fieldset: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLFieldSetElement {}" but got function "function HTMLFieldSetElement() {
    [native code]
}"
PASS figcaption: Define a customized built-in element
PASS figcaption: Operator 'new' should instantiate a customized built-in element
FAIL figcaption: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLElement {}" but got function "function HTMLElement() {
    [native code]
}"
FAIL figcaption: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLElement {}" but got function "function HTMLElement() {
    [native code]
}"
PASS figure: Define a customized built-in element
PASS figure: Operator 'new' should instantiate a customized built-in element
FAIL figure: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLElement {}" but got function "function HTMLElement() {
    [native code]
}"
FAIL figure: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLElement {}" but got function "function HTMLElement() {
    [native code]
}"
PASS footer: Define a customized built-in element
PASS footer: Operator 'new' should instantiate a customized built-in element
FAIL footer: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLElement {}" but got function "function HTMLElement() {
    [native code]
}"
FAIL footer: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLElement {}" but got function "function HTMLElement() {
    [native code]
}"
PASS form: Define a customized built-in element
FAIL form: Operator 'new' should instantiate a customized built-in element Illegal constructor
FAIL form: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLFormElement {}" but got function "function HTMLFormElement() {
    [native code]
}"
FAIL form: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLFormElement {}" but got function "function HTMLFormElement() {
    [native code]
}"
PASS h1: Define a customized built-in element
FAIL h1: Operator 'new' should instantiate a customized built-in element Illegal constructor
FAIL h1: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLHeadingElement {}" but got function "function HTMLHeadingElement() {
    [native code]
}"
FAIL h1: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLHeadingElement {}" but got function "function HTMLHeadingElement() {
    [native code]
}"
PASS h2: Define a customized built-in element
FAIL h2: Operator 'new' should instantiate a customized built-in element Illegal constructor
FAIL h2: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLHeadingElement {}" but got function "function HTMLHeadingElement() {
    [native code]
}"
FAIL h2: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLHeadingElement {}" but got function "function HTMLHeadingElement() {
    [native code]
}"
PASS h3: Define a customized built-in element
FAIL h3: Operator 'new' should instantiate a customized built-in element Illegal constructor
FAIL h3: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLHeadingElement {}" but got function "function HTMLHeadingElement() {
    [native code]
}"
FAIL h3: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLHeadingElement {}" but got function "function HTMLHeadingElement() {
    [native code]
}"
PASS h4: Define a customized built-in element
FAIL h4: Operator 'new' should instantiate a customized built-in element Illegal constructor
FAIL h4: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLHeadingElement {}" but got function "function HTMLHeadingElement() {
    [native code]
}"
FAIL h4: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLHeadingElement {}" but got function "function HTMLHeadingElement() {
    [native code]
}"
PASS h5: Define a customized built-in element
FAIL h5: Operator 'new' should instantiate a customized built-in element Illegal constructor
FAIL h5: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLHeadingElement {}" but got function "function HTMLHeadingElement() {
    [native code]
}"
FAIL h5: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLHeadingElement {}" but got function "function HTMLHeadingElement() {
    [native code]
}"
PASS h6: Define a customized built-in element
FAIL h6: Operator 'new' should instantiate a customized built-in element Illegal constructor
FAIL h6: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLHeadingElement {}" but got function "function HTMLHeadingElement() {
    [native code]
}"
FAIL h6: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLHeadingElement {}" but got function "function HTMLHeadingElement() {
    [native code]
}"
PASS header: Define a customized built-in element
PASS header: Operator 'new' should instantiate a customized built-in element
FAIL header: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLElement {}" but got function "function HTMLElement() {
    [native code]
}"
FAIL header: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLElement {}" but got function "function HTMLElement() {
    [native code]
}"
PASS hgroup: Define a customized built-in element
PASS hgroup: Operator 'new' should instantiate a customized built-in element
FAIL hgroup: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLElement {}" but got function "function HTMLElement() {
    [native code]
}"
FAIL hgroup: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLElement {}" but got function "function HTMLElement() {
    [native code]
}"
PASS hr: Define a customized built-in element
FAIL hr: Operator 'new' should instantiate a customized built-in element Illegal constructor
FAIL hr: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLHRElement {}" but got function "function HTMLHRElement() {
    [native code]
}"
FAIL hr: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLHRElement {}" but got function "function HTMLHRElement() {
    [native code]
}"
PASS html: Define a customized built-in element
FAIL html: Operator 'new' should instantiate a customized built-in element Illegal constructor
FAIL html: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLHtmlElement {}" but got function "function HTMLHtmlElement() {
    [native code]
}"
FAIL html: document parser should instantiate a customized built-in element assert_equals: expected function "class extends HTMLHtmlElement {}" but got function "function HTMLHtmlElement() {
    [native code]
}"
PASS i: Define a customized built-in element
PASS i: Operator 'new' should instantiate a customized built-in element
FAIL i: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLElement {}" but got function "function HTMLElement() {
    [native code]
}"
FAIL i: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLElement {}" but got function "function HTMLElement() {
    [native code]
}"
PASS iframe: Define a customized built-in element
FAIL iframe: Operator 'new' should instantiate a customized built-in element Illegal constructor
FAIL iframe: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLIFrameElement {}" but got function "function HTMLIFrameElement() {
    [native code]
}"
FAIL iframe: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLIFrameElement {}" but got function "function HTMLIFrameElement() {
    [native code]
}"
PASS img: Define a customized built-in element
FAIL img: Operator 'new' should instantiate a customized built-in element Illegal constructor
FAIL img: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLImageElement {}" but got function "function HTMLImageElement() {
    [native code]
}"
FAIL img: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLImageElement {}" but got function "function HTMLImageElement() {
    [native code]
}"
PASS input: Define a customized built-in element
FAIL input: Operator 'new' should instantiate a customized built-in element Illegal constructor
FAIL input: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLInputElement {}" but got function "function HTMLInputElement() {
    [native code]
}"
FAIL input: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLInputElement {}" but got function "function HTMLInputElement() {
    [native code]
}"
PASS ins: Define a customized built-in element
FAIL ins: Operator 'new' should instantiate a customized built-in element Illegal constructor
FAIL ins: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLModElement {}" but got function "function HTMLModElement() {
    [native code]
}"
FAIL ins: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLModElement {}" but got function "function HTMLModElement() {
    [native code]
}"
PASS kbd: Define a customized built-in element
PASS kbd: Operator 'new' should instantiate a customized built-in element
FAIL kbd: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLElement {}" but got function "function HTMLElement() {
    [native code]
}"
FAIL kbd: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLElement {}" but got function "function HTMLElement() {
    [native code]
}"
PASS label: Define a customized built-in element
FAIL label: Operator 'new' should instantiate a customized built-in element Illegal constructor
FAIL label: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLLabelElement {}" but got function "function HTMLLabelElement() {
    [native code]
}"
FAIL label: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLLabelElement {}" but got function "function HTMLLabelElement() {
    [native code]
}"
PASS legend: Define a customized built-in element
FAIL legend: Operator 'new' should instantiate a customized built-in element Illegal constructor
FAIL legend: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLLegendElement {}" but got function "function HTMLLegendElement() {
    [native code]
}"
FAIL legend: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLLegendElement {}" but got function "function HTMLLegendElement() {
    [native code]
}"
PASS li: Define a customized built-in element
FAIL li: Operator 'new' should instantiate a customized built-in element Illegal constructor
FAIL li: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLLIElement {}" but got function "function HTMLLIElement() {
    [native code]
}"
FAIL li: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLLIElement {}" but got function "function HTMLLIElement() {
    [native code]
}"
PASS link: Define a customized built-in element
FAIL link: Operator 'new' should instantiate a customized built-in element Illegal constructor
FAIL link: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLLinkElement {}" but got function "function HTMLLinkElement() {
    [native code]
}"
FAIL link: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLLinkElement {}" but got function "function HTMLLinkElement() {
    [native code]
}"
PASS main: Define a customized built-in element
PASS main: Operator 'new' should instantiate a customized built-in element
FAIL main: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLElement {}" but got function "function HTMLElement() {
    [native code]
}"
FAIL main: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLElement {}" but got function "function HTMLElement() {
    [native code]
}"
PASS map: Define a customized built-in element
FAIL map: Operator 'new' should instantiate a customized built-in element Illegal constructor
FAIL map: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLMapElement {}" but got function "function HTMLMapElement() {
    [native code]
}"
FAIL map: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLMapElement {}" but got function "function HTMLMapElement() {
    [native code]
}"
PASS mark: Define a customized built-in element
PASS mark: Operator 'new' should instantiate a customized built-in element
FAIL mark: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLElement {}" but got function "function HTMLElement() {
    [native code]
}"
FAIL mark: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLElement {}" but got function "function HTMLElement() {
    [native code]
}"
PASS menu: Define a customized built-in element
FAIL menu: Operator 'new' should instantiate a customized built-in element Illegal constructor
FAIL menu: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLMenuElement {}" but got function "function HTMLMenuElement() {
    [native code]
}"
FAIL menu: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLMenuElement {}" but got function "function HTMLMenuElement() {
    [native code]
}"
PASS meta: Define a customized built-in element
FAIL meta: Operator 'new' should instantiate a customized built-in element Illegal constructor
FAIL meta: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLMetaElement {}" but got function "function HTMLMetaElement() {
    [native code]
}"
FAIL meta: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLMetaElement {}" but got function "function HTMLMetaElement() {
    [native code]
}"
PASS meter: Define a customized built-in element
FAIL meter: Operator 'new' should instantiate a customized built-in element Illegal constructor
FAIL meter: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLMeterElement {}" but got function "function HTMLMeterElement() {
    [native code]
}"
FAIL meter: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLMeterElement {}" but got function "function HTMLMeterElement() {
    [native code]
}"
PASS nav: Define a customized built-in element
PASS nav: Operator 'new' should instantiate a customized built-in element
FAIL nav: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLElement {}" but got function "function HTMLElement() {
    [native code]
}"
FAIL nav: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLElement {}" but got function "function HTMLElement() {
    [native code]
}"
PASS noscript: Define a customized built-in element
PASS noscript: Operator 'new' should instantiate a customized built-in element
FAIL noscript: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLElement {}" but got function "function HTMLElement() {
    [native code]
}"
FAIL noscript: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLElement {}" but got function "function HTMLElement() {
    [native code]
}"
PASS object: Define a customized built-in element
FAIL object: Operator 'new' should instantiate a customized built-in element Illegal constructor
FAIL object: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLObjectElement {}" but got function "function HTMLObjectElement() {
    [native code]
}"
FAIL object: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLObjectElement {}" but got function "function HTMLObjectElement() {
    [native code]
}"
PASS ol: Define a customized built-in element
FAIL ol: Operator 'new' should instantiate a customized built-in element Illegal constructor
FAIL ol: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLOListElement {}" but got function "function HTMLOListElement() {
    [native code]
}"
FAIL ol: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLOListElement {}" but got function "function HTMLOListElement() {
    [native code]
}"
PASS optgroup: Define a customized built-in element
FAIL optgroup: Operator 'new' should instantiate a customized built-in element Illegal constructor
FAIL optgroup: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLOptGroupElement {}" but got function "function HTMLOptGroupElement() {
    [native code]
}"
FAIL optgroup: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLOptGroupElement {}" but got function "function HTMLOptGroupElement() {
    [native code]
}"
PASS option: Define a customized built-in element
FAIL option: Operator 'new' should instantiate a customized built-in element Illegal constructor
FAIL option: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLOptionElement {}" but got function "function HTMLOptionElement() {
    [native code]
}"
FAIL option: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLOptionElement {}" but got function "function HTMLOptionElement() {
    [native code]
}"
PASS output: Define a customized built-in element
FAIL output: Operator 'new' should instantiate a customized built-in element assert_equals: Cloning a customized built-in element should succeed. expected function "class extends HTMLOutputElement {}" but got function "function HTMLOutputElement() {
    [native code]
}"
FAIL output: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLOutputElement {}" but got function "function HTMLOutputElement() {
    [native code]
}"
FAIL output: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLOutputElement {}" but got function "function HTMLOutputElement() {
    [native code]
}"
PASS p: Define a customized built-in element
FAIL p: Operator 'new' should instantiate a customized built-in element Illegal constructor
FAIL p: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLParagraphElement {}" but got function "function HTMLParagraphElement() {
    [native code]
}"
FAIL p: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLParagraphElement {}" but got function "function HTMLParagraphElement() {
    [native code]
}"
PASS param: Define a customized built-in element
FAIL param: Operator 'new' should instantiate a customized built-in element Illegal constructor
FAIL param: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLParamElement {}" but got function "function HTMLParamElement() {
    [native code]
}"
FAIL param: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLParamElement {}" but got function "function HTMLParamElement() {
    [native code]
}"
PASS picture: Define a customized built-in element
FAIL picture: Operator 'new' should instantiate a customized built-in element Illegal constructor
FAIL picture: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLPictureElement {}" but got function "function HTMLPictureElement() {
    [native code]
}"
FAIL picture: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLPictureElement {}" but got function "function HTMLPictureElement() {
    [native code]
}"
PASS pre: Define a customized built-in element
FAIL pre: Operator 'new' should instantiate a customized built-in element Illegal constructor
FAIL pre: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLPreElement {}" but got function "function HTMLPreElement() {
    [native code]
}"
FAIL pre: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLPreElement {}" but got function "function HTMLPreElement() {
    [native code]
}"
PASS progress: Define a customized built-in element
FAIL progress: Operator 'new' should instantiate a customized built-in element Illegal constructor
FAIL progress: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLProgressElement {}" but got function "function HTMLProgressElement() {
    [native code]
}"
FAIL progress: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLProgressElement {}" but got function "function HTMLProgressElement() {
    [native code]
}"
PASS q: Define a customized built-in element
FAIL q: Operator 'new' should instantiate a customized built-in element Illegal constructor
FAIL q: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLQuoteElement {}" but got function "function HTMLQuoteElement() {
    [native code]
}"
FAIL q: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLQuoteElement {}" but got function "function HTMLQuoteElement() {
    [native code]
}"
PASS rp: Define a customized built-in element
PASS rp: Operator 'new' should instantiate a customized built-in element
FAIL rp: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLElement {}" but got function "function HTMLElement() {
    [native code]
}"
FAIL rp: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLElement {}" but got function "function HTMLElement() {
    [native code]
}"
PASS rt: Define a customized built-in element
PASS rt: Operator 'new' should instantiate a customized built-in element
FAIL rt: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLElement {}" but got function "function HTMLElement() {
    [native code]
}"
FAIL rt: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLElement {}" but got function "function HTMLElement() {
    [native code]
}"
PASS ruby: Define a customized built-in element
PASS ruby: Operator 'new' should instantiate a customized built-in element
FAIL ruby: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLElement {}" but got function "function HTMLElement() {
    [native code]
}"
FAIL ruby: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLElement {}" but got function "function HTMLElement() {
    [native code]
}"
PASS s: Define a customized built-in element
PASS s: Operator 'new' should instantiate a customized built-in element
FAIL s: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLElement {}" but got function "function HTMLElement() {
    [native code]
}"
FAIL s: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLElement {}" but got function "function HTMLElement() {
    [native code]
}"
PASS samp: Define a customized built-in element
PASS samp: Operator 'new' should instantiate a customized built-in element
FAIL samp: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLElement {}" but got function "function HTMLElement() {
    [native code]
}"
FAIL samp: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLElement {}" but got function "function HTMLElement() {
    [native code]
}"
PASS script: Define a customized built-in element
FAIL script: Operator 'new' should instantiate a customized built-in element Illegal constructor
FAIL script: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLScriptElement {}" but got function "function HTMLScriptElement() {
    [native code]
}"
FAIL script: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLScriptElement {}" but got function "function HTMLScriptElement() {
    [native code]
}"
PASS section: Define a customized built-in element
PASS section: Operator 'new' should instantiate a customized built-in element
FAIL section: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLElement {}" but got function "function HTMLElement() {
    [native code]
}"
FAIL section: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLElement {}" but got function "function HTMLElement() {
    [native code]
}"
PASS select: Define a customized built-in element
FAIL select: Operator 'new' should instantiate a customized built-in element Illegal constructor
FAIL select: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLSelectElement {}" but got function "function HTMLSelectElement() {
    [native code]
}"
FAIL select: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLSelectElement {}" but got function "function HTMLSelectElement() {
    [native code]
}"
PASS small: Define a customized built-in element
PASS small: Operator 'new' should instantiate a customized built-in element
FAIL small: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLElement {}" but got function "function HTMLElement() {
    [native code]
}"
FAIL small: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLElement {}" but got function "function HTMLElement() {
    [native code]
}"
PASS source: Define a customized built-in element
FAIL source: Operator 'new' should instantiate a customized built-in element Illegal constructor
FAIL source: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLSourceElement {}" but got function "function HTMLSourceElement() {
    [native code]
}"
FAIL source: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLSourceElement {}" but got function "function HTMLSourceElement() {
    [native code]
}"
PASS span: Define a customized built-in element
FAIL span: Operator 'new' should instantiate a customized built-in element Illegal constructor
FAIL span: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLSpanElement {}" but got function "function HTMLSpanElement() {
    [native code]
}"
FAIL span: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLSpanElement {}" but got function "function HTMLSpanElement() {
    [native code]
}"
PASS strong: Define a customized built-in element
PASS strong: Operator 'new' should instantiate a customized built-in element
FAIL strong: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLElement {}" but got function "function HTMLElement() {
    [native code]
}"
FAIL strong: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLElement {}" but got function "function HTMLElement() {
    [native code]
}"
PASS style: Define a customized built-in element
FAIL style: Operator 'new' should instantiate a customized built-in element Illegal constructor
FAIL style: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLStyleElement {}" but got function "function HTMLStyleElement() {
    [native code]
}"
FAIL style: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLStyleElement {}" but got function "function HTMLStyleElement() {
    [native code]
}"
PASS sub: Define a customized built-in element
PASS sub: Operator 'new' should instantiate a customized built-in element
FAIL sub: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLElement {}" but got function "function HTMLElement() {
    [native code]
}"
FAIL sub: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLElement {}" but got function "function HTMLElement() {
    [native code]
}"
PASS summary: Define a customized built-in element
PASS summary: Operator 'new' should instantiate a customized built-in element
FAIL summary: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLElement {}" but got function "function HTMLElement() {
    [native code]
}"
FAIL summary: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLElement {}" but got function "function HTMLElement() {
    [native code]
}"
PASS sup: Define a customized built-in element
PASS sup: Operator 'new' should instantiate a customized built-in element
FAIL sup: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLElement {}" but got function "function HTMLElement() {
    [native code]
}"
FAIL sup: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLElement {}" but got function "function HTMLElement() {
    [native code]
}"
PASS table: Define a customized built-in element
FAIL table: Operator 'new' should instantiate a customized built-in element Illegal constructor
FAIL table: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLTableElement {}" but got function "function HTMLTableElement() {
    [native code]
}"
FAIL table: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLTableElement {}" but got function "function HTMLTableElement() {
    [native code]
}"
PASS tbody: Define a customized built-in element
FAIL tbody: Operator 'new' should instantiate a customized built-in element Illegal constructor
FAIL tbody: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLTableSectionElement {}" but got function "function HTMLTableSectionElement() {
    [native code]
}"
FAIL tbody: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLTableSectionElement {}" but got function "function HTMLTableSectionElement() {
    [native code]
}"
PASS td: Define a customized built-in element
FAIL td: Operator 'new' should instantiate a customized built-in element Illegal constructor
FAIL td: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLTableCellElement {}" but got function "function HTMLTableCellElement() {
    [native code]
}"
FAIL td: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLTableCellElement {}" but got function "function HTMLTableCellElement() {
    [native code]
}"
PASS template: Define a customized built-in element
FAIL template: Operator 'new' should instantiate a customized built-in element Illegal constructor
FAIL template: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLTemplateElement {}" but got function "function HTMLTemplateElement() {
    [native code]
}"
FAIL template: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLTemplateElement {}" but got function "function HTMLTemplateElement() {
    [native code]
}"
PASS textarea: Define a customized built-in element
FAIL textarea: Operator 'new' should instantiate a customized built-in element Illegal constructor
FAIL textarea: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLTextAreaElement {}" but got function "function HTMLTextAreaElement() {
    [native code]
}"
FAIL textarea: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLTextAreaElement {}" but got function "function HTMLTextAreaElement() {
    [native code]
}"
PASS tfoot: Define a customized built-in element
FAIL tfoot: Operator 'new' should instantiate a customized built-in element Illegal constructor
FAIL tfoot: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLTableSectionElement {}" but got function "function HTMLTableSectionElement() {
    [native code]
}"
FAIL tfoot: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLTableSectionElement {}" but got function "function HTMLTableSectionElement() {
    [native code]
}"
PASS th: Define a customized built-in element
FAIL th: Operator 'new' should instantiate a customized built-in element Illegal constructor
FAIL th: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLTableCellElement {}" but got function "function HTMLTableCellElement() {
    [native code]
}"
FAIL th: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLTableCellElement {}" but got function "function HTMLTableCellElement() {
    [native code]
}"
PASS thead: Define a customized built-in element
FAIL thead: Operator 'new' should instantiate a customized built-in element Illegal constructor
FAIL thead: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLTableSectionElement {}" but got function "function HTMLTableSectionElement() {
    [native code]
}"
FAIL thead: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLTableSectionElement {}" but got function "function HTMLTableSectionElement() {
    [native code]
}"
PASS time: Define a customized built-in element
FAIL time: Operator 'new' should instantiate a customized built-in element Illegal constructor
FAIL time: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLTimeElement {}" but got function "function HTMLTimeElement() {
    [native code]
}"
FAIL time: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLTimeElement {}" but got function "function HTMLTimeElement() {
    [native code]
}"
PASS title: Define a customized built-in element
FAIL title: Operator 'new' should instantiate a customized built-in element Illegal constructor
FAIL title: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLTitleElement {}" but got function "function HTMLTitleElement() {
    [native code]
}"
FAIL title: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLTitleElement {}" but got function "function HTMLTitleElement() {
    [native code]
}"
PASS tr: Define a customized built-in element
FAIL tr: Operator 'new' should instantiate a customized built-in element Illegal constructor
FAIL tr: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLTableRowElement {}" but got function "function HTMLTableRowElement() {
    [native code]
}"
FAIL tr: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLTableRowElement {}" but got function "function HTMLTableRowElement() {
    [native code]
}"
PASS track: Define a customized built-in element
FAIL track: Operator 'new' should instantiate a customized built-in element Illegal constructor
FAIL track: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLTrackElement {}" but got function "function HTMLTrackElement() {
    [native code]
}"
FAIL track: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLTrackElement {}" but got function "function HTMLTrackElement() {
    [native code]
}"
PASS u: Define a customized built-in element
PASS u: Operator 'new' should instantiate a customized built-in element
FAIL u: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLElement {}" but got function "function HTMLElement() {
    [native code]
}"
FAIL u: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLElement {}" but got function "function HTMLElement() {
    [native code]
}"
PASS ul: Define a customized built-in element
FAIL ul: Operator 'new' should instantiate a customized built-in element Illegal constructor
FAIL ul: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLUListElement {}" but got function "function HTMLUListElement() {
    [native code]
}"
FAIL ul: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLUListElement {}" but got function "function HTMLUListElement() {
    [native code]
}"
PASS var: Define a customized built-in element
PASS var: Operator 'new' should instantiate a customized built-in element
FAIL var: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLElement {}" but got function "function HTMLElement() {
    [native code]
}"
FAIL var: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLElement {}" but got function "function HTMLElement() {
    [native code]
}"
PASS video: Define a customized built-in element
FAIL video: Operator 'new' should instantiate a customized built-in element Illegal constructor
FAIL video: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLVideoElement {}" but got function "function HTMLVideoElement() {
    [native code]
}"
FAIL video: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLVideoElement {}" but got function "function HTMLVideoElement() {
    [native code]
}"
PASS wbr: Define a customized built-in element
PASS wbr: Operator 'new' should instantiate a customized built-in element
FAIL wbr: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLElement {}" but got function "function HTMLElement() {
    [native code]
}"
FAIL wbr: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLElement {}" but got function "function HTMLElement() {
    [native code]
}"
PASS dialog: Define a customized built-in element
FAIL dialog: Operator 'new' should instantiate a customized built-in element Illegal constructor
FAIL dialog: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLDialogElement {}" but got function "function HTMLDialogElement() {
    [native code]
}"
FAIL dialog: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLDialogElement {}" but got function "function HTMLDialogElement() {
    [native code]
}"
PASS slot: Define a customized built-in element
FAIL slot: Operator 'new' should instantiate a customized built-in element Illegal constructor
FAIL slot: document.createElement() should instantiate a customized built-in element assert_equals: expected function "class extends HTMLSlotElement {}" but got function "function HTMLSlotElement() {
    [native code]
}"
FAIL slot: innerHTML should instantiate a customized built-in element assert_equals: expected function "class extends HTMLSlotElement {}" but got function "function HTMLSlotElement() {
    [native code]
}"