Add tests for plugin config hooks

.changeset/tall-moons-itch.md

@@ -0,0 +1,5 @@
+---
+'wmr': patch
+---
+
+Add plugin `config()` and `configResolved()` tests

packages/wmr/test/fixtures.test.js

@@ -601,6 +601,14 @@ describe('fixtures', () => {
 			expect(text).toEqual('file pre1 pre2 normal1 normal2 post1 post2');
 		});
 
+		it('should support config() and configResolved() hooks', async () => {
+			await loadFixture('plugin-config', env);
+			instance = await runWmrFast(env.tmp.path);
+			await env.page.goto(await instance.address);
+			expect(await env.page.evaluate(`fetch('/test').then(r => r.text())`)).toEqual('it works');
+			expect(await env.page.evaluate(`fetch('/test-resolved').then(r => r.text())`)).toEqual('it works');
+		});
+
 		it('should add middlewares via config', async () => {
 			await loadFixture('plugin-middlewares', env);
 			instance = await runWmrFast(env.tmp.path);

packages/wmr/test/fixtures/plugin-config/public/index.html

@@ -0,0 +1 @@
+<p>Nothing to see here!</p>

packages/wmr/test/fixtures/plugin-config/wmr.config.mjs

@@ -0,0 +1,38 @@
+export default function foo() {
+	return [
+		{
+			name: 'no-return',
+			async config() {},
+			configResolved() {}
+		},
+		{
+			name: 'with-return',
+			config() {
+				return {
+					middleware: [
+						(req, res, next) => {
+							if (req.url === '/test') {
+								res.end('it works');
+							} else {
+								next();
+							}
+						}
+					]
+				};
+			},
+			configResolved() {
+				return {
+					middleware: [
+						(req, res, next) => {
+							if (req.url === '/test-resolved') {
+								res.end('it works');
+							} else {
+								next();
+							}
+						}
+					]
+				};
+			}
+		}
+	];
+}

packages/wmr/types.d.ts

@@ -20,8 +20,8 @@ declare module 'wmr' {
 		 * Specify when a plugin should be executed.
 		 */
 		enforce?: 'pre' | 'post' | 'normal';
-		config?: (config: Options) => Partial<Options>;
-		configResolved?: (config: Options) => Partial<Options>;
+		config?: (config: Options) => Partial<Options> | void;
+		configResolved?: (config: Options) => Partial<Options> | void;
 	}
 
 	export interface Options {