feat(e2e): add isTestExtensionLoaded method

Author: jsjoeio

test/e2e/models/CodeServer.ts

@@ -296,6 +296,23 @@ export class CodeServerPage {
     return visible
   }
 
+  /**
+   * Checks if the test extension loaded
+   */
+  async isTestExtensionLoaded() {
+    const selector = "text=test extension loaded"
+    this.codeServer.logger.debug("Waiting for test extension to load...")
+    await this.page.waitForSelector(selector, {
+      timeout: 3000,
+    })
+
+    const loaded = await this.page.isVisible(selector)
+
+    this.codeServer.logger.debug(`Test extension has ${loaded ? "" : "not"} loaded`)
+
+    return loaded
+  }
+
   /**
    * Focuses the integrated terminal by navigating through the command palette.
    *