1 files changed, 18 insertions, 11 deletions

diff --git a/devtools/server/tests/xpcshell/head_dbg.js b/devtools/server/tests/xpcshell/head_dbg.js
index 7161d5eaea..e8547f15b8 100644
--- a/devtools/server/tests/xpcshell/head_dbg.js
+++ b/devtools/server/tests/xpcshell/head_dbg.js
@@ -22,8 +22,8 @@ appInfo.updateAppInfo({
 const { require, loader } = ChromeUtils.importESModule(
   "resource://devtools/shared/loader/Loader.sys.mjs"
 );
-const { worker } = ChromeUtils.import(
-  "resource://devtools/shared/loader/worker-loader.js"
+const { worker } = ChromeUtils.importESModule(
+  "resource://devtools/shared/loader/worker-loader.sys.mjs"
 );
 
 const { NetUtil } = ChromeUtils.importESModule(
@@ -250,11 +250,6 @@ function waitForNewSource(threadFront, url) {
   });
 }
 
-function attachThread(targetFront, options = {}) {
-  dump("Attaching to thread.\n");
-  return targetFront.attachThread(options);
-}
-
 function resume(threadFront) {
   dump("Resuming thread.\n");
   return threadFront.resume();
@@ -445,10 +440,14 @@ async function attachTestTab(client, title) {
 async function attachTestThread(client, title) {
   const commands = await attachTestTab(client, title);
   const targetFront = commands.targetCommand.targetFront;
-  const threadFront = await targetFront.getFront("thread");
-  await targetFront.attachThread({
-    autoBlackBox: true,
+
+  // Pass any configuration, in order to ensure starting all the thread actors
+  // and have them to handle debugger statements.
+  await commands.threadConfigurationCommand.updateConfiguration({
+    skipBreakpoints: false,
   });
+
+  const threadFront = await targetFront.getFront("thread");
   Assert.equal(threadFront.state, "attached", "Thread front is attached");
   return { targetFront, threadFront, commands };
 }
@@ -856,7 +855,15 @@ async function setupTestFromUrl(url) {
 
   const targetFront = await descriptorFront.getTarget();
 
-  const threadFront = await attachThread(targetFront);
+  const commands = await createCommandsDictionary(descriptorFront);
+
+  // Pass any configuration, in order to ensure starting all the thread actor
+  // and have it to notify about all sources
+  await commands.threadConfigurationCommand.updateConfiguration({
+    skipBreakpoints: false,
+  });
+
+  const threadFront = await targetFront.getFront("thread");
 
   const sourceUrl = getFileUrl(url);
   const promise = waitForNewSource(threadFront, sourceUrl);