1 files changed, 25 insertions, 0 deletions
diff --git a/toolkit/crashreporter/test/unit_ipc/test_content_large_annotation.js b/toolkit/crashreporter/test/unit_ipc/test_content_large_annotation.js
new file mode 100644
index 0000000000..92875ccd99
--- /dev/null
+++ b/toolkit/crashreporter/test/unit_ipc/test_content_large_annotation.js
@@ -0,0 +1,25 @@
+/* import-globals-from ../unit/head_crashreporter.js */
+load("../unit/head_crashreporter.js");
+
+add_task(async function run_test() {
+  if (!("@mozilla.org/toolkit/crash-reporter;1" in Cc)) {
+    dump(
+      "INFO | test_content_large_annotation.js | Can't test crashreporter in a non-libxul build.\n"
+    );
+    return;
+  }
+
+  // Try crashing with a runtime abort
+  await do_content_crash(
+    function () {
+      crashType = CrashTestUtils.CRASH_MOZ_CRASH;
+      crashReporter.annotateCrashReport("TestKey", "a".repeat(65536));
+    },
+    function (mdump, extra) {
+      Assert.ok(
+        extra.TestKey == "a".repeat(65536),
+        "The TestKey annotation matches the expected value"
+      );
+    }
+  );
+});