svelte/test/runtime/samples/svg-class/_config.js

// this looks like another JSDOM quirk — svg.className = 'foo' behaves
// differently from browsers. So this test succeeds even when it should fail
export default {
	html: `<svg class='foo'></svg>`,

	test ( assert, component, target ) {
		const svg = target.querySelector( 'svg' );

		assert.equal( svg.namespaceURI, 'http://www.w3.org/2000/svg' );
		assert.equal( svg.getAttribute( 'class' ), 'foo' );

		component.destroy();
	}
};