67 lines
2.7 KiB
HTML
67 lines
2.7 KiB
HTML
<!DOCTYPE html>
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<meta charset=utf-8>
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<title>ParentNode.prepend</title>
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<link rel=help href="https://dom.spec.whatwg.org/#dom-parentnode-prepend">
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<script src="pre-insertion-validation-hierarchy.js"></script>
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<script>
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preInsertionValidateHierarchy("prepend");
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function test_prepend(node, nodeName) {
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test(function() {
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const parent = node.cloneNode();
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parent.prepend();
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assert_array_equals(parent.childNodes, []);
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}, nodeName + '.prepend() without any argument, on a parent having no child.');
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test(function() {
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const parent = node.cloneNode();
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parent.prepend(null);
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assert_equals(parent.childNodes[0].textContent, 'null');
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}, nodeName + '.prepend() with null as an argument, on a parent having no child.');
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test(function() {
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const parent = node.cloneNode();
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parent.prepend(undefined);
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assert_equals(parent.childNodes[0].textContent, 'undefined');
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}, nodeName + '.prepend() with undefined as an argument, on a parent having no child.');
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test(function() {
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const parent = node.cloneNode();
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parent.prepend('text');
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assert_equals(parent.childNodes[0].textContent, 'text');
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}, nodeName + '.prepend() with only text as an argument, on a parent having no child.');
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test(function() {
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const parent = node.cloneNode();
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const x = document.createElement('x');
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parent.prepend(x);
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assert_array_equals(parent.childNodes, [x]);
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}, nodeName + '.prepend() with only one element as an argument, on a parent having no child.');
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test(function() {
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const parent = node.cloneNode();
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const child = document.createElement('test');
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parent.appendChild(child);
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parent.prepend(null);
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assert_equals(parent.childNodes[0].textContent, 'null');
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assert_equals(parent.childNodes[1], child);
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}, nodeName + '.prepend() with null as an argument, on a parent having a child.');
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test(function() {
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const parent = node.cloneNode();
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const x = document.createElement('x');
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const child = document.createElement('test');
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parent.appendChild(child);
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parent.prepend(x, 'text');
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assert_equals(parent.childNodes[0], x);
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assert_equals(parent.childNodes[1].textContent, 'text');
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assert_equals(parent.childNodes[2], child);
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}, nodeName + '.prepend() with one element and text as argument, on a parent having a child.');
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}
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test_prepend(document.createElement('div'), 'Element');
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test_prepend(document.createDocumentFragment(), 'DocumentFragment');
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</script>
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</html>
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