1 files changed, 59 insertions, 0 deletions
diff --git a/devtools/shared/commands/target/tests/browser_target_command_detach.js b/devtools/shared/commands/target/tests/browser_target_command_detach.js
new file mode 100644
index 0000000000..a0056cd7a5
--- /dev/null
+++ b/devtools/shared/commands/target/tests/browser_target_command_detach.js
@@ -0,0 +1,59 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+// Test the TargetCommand's when detaching the top target
+//
+// Do this with the "remote tab" codepath, which will avoid
+// destroying the DevToolsClient when the target is destroyed.
+// Otherwise, with "local tab", the client is closed and everything is destroy
+// on both client and server side.
+
+const TEST_URL = "data:text/html,test-page";
+
+add_task(async function () {
+  info(" ### Test detaching the top target");
+
+  // Create a TargetCommand for a given test tab
+  const tab = await addTab(TEST_URL);
+
+  info("Create a first commands, which will destroy its top target");
+  const commands = await CommandsFactory.forRemoteTab(
+    tab.linkedBrowser.browserId
+  );
+  const targetCommand = commands.targetCommand;
+
+  // We have to start listening in order to ensure having a targetFront available
+  await targetCommand.startListening();
+
+  info("Call any target front method, to ensure it works fine");
+  await targetCommand.targetFront.focus();
+
+  // Destroying the target front should end up calling "WindowGlobalTargetActor.detach"
+  // which should destroy the target on the server side
+  await targetCommand.targetFront.destroy();
+
+  info(
+    "Now create a second commands after destroy, to see if we can spawn a new, functional target"
+  );
+  const secondCommands = await CommandsFactory.forRemoteTab(
+    tab.linkedBrowser.browserId,
+    {
+      client: commands.client,
+    }
+  );
+  const secondTargetCommand = secondCommands.targetCommand;
+
+  // We have to start listening in order to ensure having a targetFront available
+  await secondTargetCommand.startListening();
+
+  info("Call any target front method, to ensure it works fine");
+  await secondTargetCommand.targetFront.focus();
+
+  BrowserTestUtils.removeTab(tab);
+
+  info("Close the two commands");
+  await commands.destroy();
+  await secondCommands.destroy();
+});