add test for exporting with custom basepath

src/api/export.ts

@@ -51,9 +51,10 @@ async function execute(emitter: EventEmitter, {
 	const port = await ports.find(3000);
 
 	const origin = `http://localhost:${port}`;
+	const root = new URL(basepath || '', origin);
 
 	emitter.emit('info', {
-		message: `Crawling ${origin}`
+		message: `Crawling ${root.href}`
 	});
 
 	const proc = child_process.fork(path.resolve(`${build}/server.js`), [], {
@@ -71,7 +72,8 @@ async function execute(emitter: EventEmitter, {
 	const deferreds = new Map();
 
 	function get_deferred(pathname: string) {
-		pathname = pathname.replace(`/${basepath}`, '')
+		pathname = pathname.replace(root.pathname, '');
+
 		if (!deferreds.has(pathname)) {
 			deferreds.set(pathname, new Deferred());
 		}
@@ -108,7 +110,7 @@ async function execute(emitter: EventEmitter, {
 	});
 
 	async function handle(url: URL) {
-		const pathname = url.pathname || '/';
+		const pathname = (url.pathname.replace(root.pathname, '') || '/');
 
 		if (seen.has(pathname)) return;
 		seen.add(pathname);
@@ -141,11 +143,7 @@ async function execute(emitter: EventEmitter, {
 	return ports.wait(port)
 		.then(() => {
 			// TODO all static routes
-			if (basepath) {
-				return handle(new URL(`/${basepath}/`, origin));
-			} else {
-				return handle(new URL('/', origin));
-			}
+			return handle(root);
 		})
 		.then(() => proc.kill());
 }

test/common/test.js

@@ -59,9 +59,19 @@ describe('sapper', function() {
 		basepath: '/custom-basepath'
 	});
 
-	describe('export', () => {
+	testExport({});
+
+	testExport({ basepath: '/custom-basepath' });
+});
+
+function testExport({ basepath = '' }) {
+	describe(basepath ? `export --basepath ${basepath}` : 'export', () => {
 		before(() => {
-			return exec(`node ${cli} export`);
+			if (basepath) {
+				process.env.BASEPATH = basepath;
+			}
+
+			return exec(`node ${cli} export ${basepath ? `--basepath ${basepath}` : ''}`);
 		});
 
 		it('export all pages', () => {
@@ -96,7 +106,10 @@ describe('sapper', function() {
 				'service-worker.js',
 				'svelte-logo-192.png',
 				'svelte-logo-512.png',
-			];
+			].map(file => {
+				return basepath ? path.join(basepath.replace(/^\//, ''), file) : file;
+			});
+
 			// Client scripts that should show up in the extraction directory.
 			const expectedClientRegexes = [
 				/client\/[^/]+\/main(\.\d+)?\.js/,
@@ -126,7 +139,7 @@ describe('sapper', function() {
 			});
 		});
 	});
-});
+}
 
 function run({ mode, basepath = '' }) {
 	describe(`mode=${mode}`, function () {