1 files changed, 51 insertions, 0 deletions
diff --git a/devtools/client/framework/test/allocations/browser_allocations_target.js b/devtools/client/framework/test/allocations/browser_allocations_target.js
new file mode 100644
index 0000000000..a93d6b51c9
--- /dev/null
+++ b/devtools/client/framework/test/allocations/browser_allocations_target.js
@@ -0,0 +1,51 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+// Record allocations while spawning Commands and the first top level target
+
+const TEST_URL =
+  "data:text/html;charset=UTF-8,<div>Target allocations test</div>";
+
+const { require } = ChromeUtils.importESModule(
+  "resource://devtools/shared/loader/Loader.sys.mjs"
+);
+const {
+  CommandsFactory,
+} = require("resource://devtools/shared/commands/commands-factory.js");
+
+async function testScript(tab) {
+  const commands = await CommandsFactory.forTab(tab);
+  await commands.targetCommand.startListening();
+
+  // eslint-disable-next-line mozilla/no-arbitrary-setTimeout
+  await new Promise(resolve => setTimeout(resolve, 1000));
+
+  // destroy the commands to also destroy the dedicated client.
+  await commands.destroy();
+
+  // Spin the event loop to ensure commands destruction is fully completed
+  // eslint-disable-next-line mozilla/no-arbitrary-setTimeout
+  await new Promise(resolve => setTimeout(resolve, 0));
+}
+
+add_task(async function () {
+  const tab = await addTab(TEST_URL);
+
+  // Run the test scenario first before recording in order to load all the
+  // modules. Otherwise they get reported as "still allocated" objects,
+  // whereas we do expect them to be kept in memory as they are loaded via
+  // the main DevTools loader, which keeps the module loaded until the
+  // shutdown of Firefox
+  await testScript(tab);
+
+  await startRecordingAllocations();
+
+  // Now, run the test script. This time, we record this run.
+  await testScript(tab);
+
+  await stopRecordingAllocations("target");
+
+  gBrowser.removeTab(tab);
+});