test: fix port conflicts

Author: chenjiahan

test/basic/index.test.ts

@@ -3,6 +3,7 @@ import { fileURLToPath } from 'node:url';
 import { expect, test } from '@playwright/test';
 import { createRsbuild } from '@rsbuild/core';
 import { pluginToml } from '../../src';
+import { getRandomPort } from '../helper';
 
 const __dirname = dirname(fileURLToPath(import.meta.url));
 
@@ -12,7 +13,7 @@ test('should render page as expected', async ({ page }) => {
 		rsbuildConfig: {
 			plugins: [pluginToml()],
 			server: {
-				port: 3100,
+				port: getRandomPort(),
 			},
 		},
 	});
@@ -31,7 +32,7 @@ test('should build succeed', async ({ page }) => {
 		rsbuildConfig: {
 			plugins: [pluginToml()],
 			server: {
-				port: 3100,
+				port: getRandomPort(),
 			},
 		},
 	});

test/commonjs/index.test.ts

@@ -3,6 +3,7 @@ import { fileURLToPath } from 'node:url';
 import { expect, test } from '@playwright/test';
 import { createRsbuild } from '@rsbuild/core';
 import { pluginToml } from '../../src';
+import { getRandomPort } from '../helper';
 
 const __dirname = dirname(fileURLToPath(import.meta.url));
 
@@ -15,6 +16,9 @@ test('should render page as expected', async ({ page }) => {
 					esModule: false,
 				}),
 			],
+			server: {
+				port: getRandomPort(),
+			},
 		},
 	});
 
@@ -36,6 +40,9 @@ test('should build succeed', async ({ page }) => {
 					esModule: false,
 				}),
 			],
+			server: {
+				port: getRandomPort(),
+			},
 		},
 	});
 

test/helper.ts

@@ -0,0 +1,14 @@
+const portMap = new Map();
+
+export function getRandomPort(
+	defaultPort = Math.ceil(Math.random() * 30000) + 15000,
+) {
+	let port = defaultPort;
+	while (true) {
+		if (!portMap.get(port)) {
+			portMap.set(port, 1);
+			return port;
+		}
+		port++;
+	}
+}