1 files changed, 46 insertions, 0 deletions
diff --git a/devtools/client/debugger/test/mochitest/browser_dbg-tabs-without-urls.js b/devtools/client/debugger/test/mochitest/browser_dbg-tabs-without-urls.js
new file mode 100644
index 0000000000..f6e223a657
--- /dev/null
+++ b/devtools/client/debugger/test/mochitest/browser_dbg-tabs-without-urls.js
@@ -0,0 +1,46 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at <http://mozilla.org/MPL/2.0/>. */
+
+// Test that URL-less sources have tabs added to the UI, are named correctly
+// and do not persist upon reload
+
+"use strict";
+
+add_task(async function () {
+  const dbg = await initDebugger(
+    "doc-scripts.html",
+    "simple1.js",
+    "simple2.js"
+  );
+
+  await selectSource(dbg, "simple1.js");
+  is(countTabs(dbg), 1, "Only the `simple.js` source tab exists");
+
+  invokeInTab("doEval");
+  await waitForPaused(dbg);
+
+  is(countTabs(dbg), 2, "The new eval tab is now added");
+
+  info("Assert that the eval source the tab source name correctly");
+  ok(
+    /source\d+/g.test(getTabContent(dbg, 0)),
+    "The tab name pattern is correct"
+  );
+
+  await resume(dbg);
+
+  // Test reloading the debugger
+  await reload(dbg, "simple1.js", "simple2.js");
+  is(countTabs(dbg), 1, "The eval source tab is no longer available");
+});
+
+/*
+ * Get the tab content for the specific tab
+ *
+ * @param {Number} index - index of the tab to get the source content
+ */
+function getTabContent(dbg, index) {
+  const tabs = findElement(dbg, "sourceTabs").children;
+  return tabs[index]?.innerText || "";
+}