diff --git a/custom-elements/CustomElementRegistry-getName.tentative.html b/custom-elements/CustomElementRegistry-getName.tentative.html
new file mode 100644
index 00000000000000..9bd43d51080a83
--- /dev/null
+++ b/custom-elements/CustomElementRegistry-getName.tentative.html
@@ -0,0 +1,46 @@
+
+Custom Elements: CustomElementRegistry.getName function
+
+
+
+
+
diff --git a/custom-elements/CustomElementRegistry.html b/custom-elements/CustomElementRegistry.html
index b08cd120f631df..5b75fc651fcf74 100644
--- a/custom-elements/CustomElementRegistry.html
+++ b/custom-elements/CustomElementRegistry.html
@@ -623,45 +623,6 @@
assert_equals(customElements.get('existing-custom-element'), ExistingCustomElement);
}, 'customElements.get return the constructor of the entry with the given name when there is a matching entry.');
-test(function () {
- assert_equals(customElements.getName(class extends HTMLElement {}), null);
-}, 'customElements.getName must return null when the registry does not contain an entry with the given constructor');
-
-test(function () {
- assert_throws_js(TypeError, function () { customElements.getName(undefined); },
- 'customElements.getName must throw a TypeError when the element interface is undefined');
- assert_throws_js(TypeError, function () { customElements.getName(null); },
- 'customElements.getName must throw a TypeError when the element interface is null');
- assert_throws_js(TypeError, function () { customElements.getName('foo-bar'); },
- 'customElements.getName must throw a TypeError when the element interface is a string');
- assert_throws_js(TypeError, function () { customElements.getName(1); },
- 'customElements.getName must throw a TypeError when the element interface is a number');
- assert_throws_js(TypeError, function () { customElements.getName({}); },
- 'customElements.getName must throw a TypeError when the element interface is an object');
- assert_throws_js(TypeError, function () { customElements.getName([]) },
- 'customElements.getName must throw a TypeError when the element interface is an array');
-}, 'customElements.getName must throw when the element interface is not a constructor');
-
-test(function () {
- class OtherExistingCustomElement extends HTMLElement {};
- class SecondExistingCustomElement extends HTMLElement {};
- assert_throws_js(TypeError, function () { customElements.getName(customElements.getName(OtherExistingCustomElement)); },
- 'customElements.getName must throw a TypeError when the element interface is undefined');
- customElements.define('other-existing-custom-element', OtherExistingCustomElement);
- customElements.define('second-existing-custom-element', SecondExistingCustomElement);
- assert_equals(customElements.getName(OtherExistingCustomElement), 'other-existing-custom-element');
- assert_equals(customElements.getName(SecondExistingCustomElement), 'second-existing-custom-element');
-}, 'customElements.getName returns the name of the entry with the given constructor when there is a matching entry.');
-
-test(function () {
- class ButtonCustomBuiltInElement extends HTMLButtonElement {};
- class InputCustomBuiltInElement extends HTMLInputElement {};
- customElements.define('button-custom-built-in-element', ButtonCustomBuiltInElement, { extends: 'button' });
- customElements.define('input-custom-built-in-element', InputCustomBuiltInElement, { extends: 'input' });
- assert_equals(customElements.getName(ButtonCustomBuiltInElement), 'button-custom-built-in-element');
- assert_equals(customElements.getName(InputCustomBuiltInElement), 'input-custom-built-in-element');
-}, 'customElements.getName returns the name of the entry with the given customized built in constructor when there is a matching entry.');
-
test(function () {
assert_true(customElements.whenDefined('some-name') instanceof Promise);
}, 'customElements.whenDefined must return a promise for a valid custom element name');