wp-calypso/client/lib/flags/test/index.js

import { flagUrl } from '..';

describe( 'flagUrl', () => {
	test( 'Given a valid country code, returns an SVG file path', () => {
		// Note that the 'real' helper function returns a full path,
		// not just a filename plus extension. However, that behavior
		// relies on a webpack loader, which we can't fully emulate
		// in a testing context. The closest we can get to this behavior
		// uses a mock to return just a filename with extension, but no path.
		expect( flagUrl( 'us' ) ).toBe( 'us.svg' );
	} );

	test( 'Given an invalid country code, returns a fallback inline SVG', () => {
		const gridicon = `
			<svg
				class="gridicon gridicons-globe"
				height="24"
				width="24"
				xmlns="http://www.w3.org/2000/svg"
				viewBox="0 3 24 18"
			>
				<g>
					<path d="M12 2C6.477 2 2 6.477 2 12s4.477 10 10 10 10-4.477 10-10S17.523 2 12 2zm0 18l2-2 1-1v-2h-2v-1l-1-1H9v3l2 2v1.93c-3.94-.494-7-3.858-7-7.93l1 1h2v-2h2l3-3V6h-2L9 5v-.41C9.927 4.21 10.94 4 12 4s2.073.212 3 .59V6l-1 1v2l1 1 3.13-3.13c.752.897 1.304 1.964 1.606 3.13H18l-2 2v2l1 1h2l.286.286C18.03 18.06 15.24 20 12 20z" />
				</g>
			</svg>`;
		const expectedGlobeSvg = 'data:image/svg+xml;utf8,' + encodeURIComponent( gridicon );

		expect( flagUrl( 'blerg' ) ).toBe( expectedGlobeSvg );
	} );

	test( 'Given a country code without a flag, returns a fallback inline SVG', () => {
		const gridicon = `
			<svg
				class="gridicon gridicons-globe"
				height="24"
				width="24"
				xmlns="http://www.w3.org/2000/svg"
				viewBox="0 3 24 18"
			>
				<g>
					<path d="M12 2C6.477 2 2 6.477 2 12s4.477 10 10 10 10-4.477 10-10S17.523 2 12 2zm0 18l2-2 1-1v-2h-2v-1l-1-1H9v3l2 2v1.93c-3.94-.494-7-3.858-7-7.93l1 1h2v-2h2l3-3V6h-2L9 5v-.41C9.927 4.21 10.94 4 12 4s2.073.212 3 .59V6l-1 1v2l1 1 3.13-3.13c.752.897 1.304 1.964 1.606 3.13H18l-2 2v2l1 1h2l.286.286C18.03 18.06 15.24 20 12 20z" />
				</g>
			</svg>`;
		const expectedGlobeSvg = 'data:image/svg+xml;utf8,' + encodeURIComponent( gridicon );

		expect( flagUrl( 'zz' ) ).toBe( expectedGlobeSvg );
	} );
} );