feat: add support for Webdriver launcher to setViewportPlugin

.changeset/many-scissors-develop.md

@@ -0,0 +1,6 @@
+---
+'@web/test-runner-webdriver': minor
+'@web/test-runner-commands': minor
+---
+
+Add support for Webdriver launcher to setViewportPlugin

packages/test-runner-commands/src/setViewportPlugin.ts

@@ -1,6 +1,7 @@
 import { TestRunnerPlugin } from '@web/test-runner-core';
 import type { ChromeLauncher } from '@web/test-runner-chrome';
 import type { PlaywrightLauncher } from '@web/test-runner-playwright';
+import type { WebdriverLauncher } from '@web/test-runner-webdriver';
 
 export interface Viewport {
   width: number;
@@ -50,6 +51,12 @@ export function setViewportPlugin(): TestRunnerPlugin {
           return true;
         }
 
+        if (session.browser.type === 'webdriver') {
+          const browser = session.browser as WebdriverLauncher;
+          await browser.setWindowSize(session.id, payload.width, payload.height);
+          return true;
+        }
+
         throw new Error(
           `Setting viewport is not supported for browser type ${session.browser.type}.`,
         );

packages/test-runner-webdriver/src/IFrameManager.ts

@@ -155,6 +155,13 @@ export class IFrameManager {
     return this.driver.keys(keys);
   }
 
+  // eslint-disable-next-line @typescript-eslint/no-unused-vars
+  async setWindowSize(_: string, _width: number, _height: number) {
+    throw new Error(
+      'Unsupported operation. In order to set window size in Webdriver, set "concurrency" to 1.',
+    );
+  }
+
   // eslint-disable-next-line @typescript-eslint/no-unused-vars
   async performActions(_: string, _actions: object[]) {
     throw new Error(

packages/test-runner-webdriver/src/SessionManager.ts

@@ -80,6 +80,10 @@ export class SessionManager {
     return { testCoverage: this.config.coverage ? testCoverage : undefined };
   }
 
+  async setWindowSize(_: string, width: number, height: number) {
+    return this.driver.setWindowSize(width, height);
+  }
+
   async performActions(_: string, actions: object[]) {
     return this.driver.performActions(actions);
   }

packages/test-runner-webdriver/src/webdriverLauncher.ts

@@ -229,6 +229,13 @@ export class WebdriverLauncher implements BrowserLauncher {
     return this.driverManager.sendKeys(sessionId, keys);
   }
 
+  setWindowSize(sessionId: string, width: number, height: number) {
+    if (!this.driverManager) {
+      throw new Error('Not initialized');
+    }
+    return this.driverManager.setWindowSize(sessionId, width, height);
+  }
+
   takeScreenshot(sessionId: string, locator: string) {
     if (!this.driverManager) {
       throw new Error('Not initialized');