test: Support configurable navigation timeout and increase it for Windows tests

src/McpContext.ts

@@ -61,6 +61,8 @@ interface McpContextOptions {
   // Whether this context replaces a previous one after a browser reconnect.
   // Surfaces a one-time note in the next response.
   reconnected?: boolean;
+  // Custom navigation timeout in milliseconds to override default.
+  navigationTimeout?: number;
 }
 
 // Page ids are handed out from a process-wide counter so they stay unique
@@ -503,6 +505,7 @@ export class McpContext implements Context {
         isolatedContextName: this.#getBrowserContextToNameMap().get(
           page.browserContext(),
         ),
+        navigationTimeout: this.#options.navigationTimeout,
       });
       this.#mcpPages.set(page, mcpPage);
       await mcpPage.init();

src/McpPage.ts

@@ -139,6 +139,7 @@ export class McpPage implements ContextPage {
 
   #hasNetworkBlockOrAllowlist: boolean;
   #locatorClass: typeof Locator;
+  #navigationTimeout: number;
 
   constructor(
     page: Page,
@@ -147,10 +148,12 @@ export class McpPage implements ContextPage {
       hasNetworkBlockOrAllowlist: boolean;
       locatorClass: typeof Locator;
       isolatedContextName?: string;
+      navigationTimeout?: number;
     },
   ) {
     this.#hasNetworkBlockOrAllowlist = options.hasNetworkBlockOrAllowlist;
     this.#locatorClass = options.locatorClass;
+    this.#navigationTimeout = options.navigationTimeout ?? NAVIGATION_TIMEOUT;
     this.pptrPage = page;
     this.id = id;
     this.isolatedContextName = options.isolatedContextName;
@@ -409,7 +412,14 @@ export class McpPage implements ContextPage {
     cpuMultiplier: number,
     networkMultiplier: number,
   ): WaitForHelper {
-    return new WaitForHelper(this.pptrPage, cpuMultiplier, networkMultiplier);
+    const navigationTimeout =
+      this.#navigationTimeout * networkMultiplier * cpuMultiplier;
+    return new WaitForHelper(
+      this.pptrPage,
+      cpuMultiplier,
+      networkMultiplier,
+      navigationTimeout,
+    );
   }
 
   waitForEventsAfterAction(
@@ -827,7 +837,7 @@ export class McpPage implements ContextPage {
       this.networkConditions,
     );
     this.pptrPage.setDefaultNavigationTimeout(
-      NAVIGATION_TIMEOUT * networkMultiplier * cpuMultiplier,
+      this.#navigationTimeout * networkMultiplier * cpuMultiplier,
     );
   }
 

src/WaitForHelper.ts

@@ -27,11 +27,13 @@ export class WaitForHelper {
     page: Page,
     cpuTimeoutMultiplier: number,
     networkTimeoutMultiplier: number,
+    navigationTimeout?: number,
   ) {
     this.#stableDomTimeout = 3000 * cpuTimeoutMultiplier;
     this.#stableDomFor = 100 * cpuTimeoutMultiplier;
     this.#expectNavigationIn = 100 * cpuTimeoutMultiplier;
-    this.#navigationTimeout = 3000 * networkTimeoutMultiplier;
+    this.#navigationTimeout =
+      navigationTimeout ?? 3000 * networkTimeoutMultiplier;
     this.#page = page as unknown as CdpPage;
     this.#initialUrl = page.url();
   }

tests/utils.ts

@@ -183,6 +183,7 @@ export async function withMcpContext(
         allowList: options.allowedUrlPattern,
         blocklist: options.blockedUrlPattern,
         allowUnrestrictedPaths: options.allowUnrestrictedPaths ?? false,
+        navigationTimeout: process.platform === 'win32' ? 20000 : undefined
       },
       Locator,
     );