[bidi] Add browsing context destroyed event

Author: pujagani

java/src/org/openqa/selenium/bidi/BrowsingContextInspector.java

@@ -113,7 +113,7 @@ public void onBrowsingContextCreated(Consumer<BrowsingContextInfo> consumer) {
     }
   }
 
-  private void onBrowsingContextDestroyed(Consumer<BrowsingContextInfo> consumer) {
+  public void onBrowsingContextDestroyed(Consumer<BrowsingContextInfo> consumer) {
     if (browsingContextIds.isEmpty()) {
       this.bidi.addListener(browsingContextDestroyed, consumer);
     } else {

java/test/org/openqa/selenium/bidi/browsingcontext/BrowsingContextInspectorTest.java

@@ -73,6 +73,31 @@ void canListenToWindowBrowsingContextCreatedEvent()
     }
   }
 
+  @Test
+  @NotYetImplemented(SAFARI)
+  @NotYetImplemented(IE)
+  @NotYetImplemented(CHROME)
+  @NotYetImplemented(EDGE)
+  void canListenToBrowsingContextDestroyedEvent()
+      throws ExecutionException, InterruptedException, TimeoutException {
+    try (BrowsingContextInspector inspector = new BrowsingContextInspector(driver)) {
+      CompletableFuture<BrowsingContextInfo> future = new CompletableFuture<>();
+
+      inspector.onBrowsingContextDestroyed(future::complete);
+
+      String windowHandle = driver.switchTo().newWindow(WindowType.WINDOW).getWindowHandle();
+
+      driver.close();
+
+      BrowsingContextInfo browsingContextInfo = future.get(5, TimeUnit.SECONDS);
+
+      assertThat(browsingContextInfo.getId()).isEqualTo(windowHandle);
+      assertThat("about:blank").isEqualTo(browsingContextInfo.getUrl());
+      assertThat(browsingContextInfo.getChildren()).isEqualTo(null);
+      assertThat(browsingContextInfo.getParentBrowsingContext()).isEqualTo(null);
+    }
+  }
+
   @Test
   @NotYetImplemented(SAFARI)
   @NotYetImplemented(IE)

javascript/node/selenium-webdriver/bidi/browsingContextInspector.js

@@ -37,6 +37,13 @@ class BrowsingContextInspector {
     )
   }
 
+  async onBrowsingContextDestroyed(callback) {
+    await this.subscribeAndHandleEvent(
+      'browsingContext.contextDestroyed',
+      callback
+    )
+  }
+
   async onNavigationStarted(callback) {
     await this.subscribeAndHandleEvent(
       'browsingContext.navigationStarted',

javascript/node/selenium-webdriver/test/bidi/browsingcontext_inspector_test.js

@@ -56,6 +56,24 @@ suite(
         assert.equal(contextInfo.parentBrowsingContext, null)
       })
 
+      it('can listen to browsing context destroyed event', async function () {
+        let contextInfo = null
+        const browsingcontextInspector = await BrowsingContextInspector(driver)
+        await browsingcontextInspector.onBrowsingContextDestroyed((entry) => {
+          contextInfo = entry
+        })
+
+        await driver.switchTo().newWindow('window')
+
+        const windowHandle = await driver.getWindowHandle()
+        await driver.close()
+
+        assert.equal(contextInfo.id, windowHandle)
+        assert.equal(contextInfo.url, 'about:blank')
+        assert.equal(contextInfo.children, null)
+        assert.equal(contextInfo.parentBrowsingContext, null)
+      })
+
       it('can listen to tab browsing context created event', async function () {
         let contextInfo = null
         const browsingcontextInspector = await BrowsingContextInspector(driver)