1 files changed, 26 insertions, 0 deletions
diff --git a/toolkit/profile/xpcshell/test_register_app_services_logger.js b/toolkit/profile/xpcshell/test_register_app_services_logger.js
new file mode 100644
index 0000000000..cf777c4c6c
--- /dev/null
+++ b/toolkit/profile/xpcshell/test_register_app_services_logger.js
@@ -0,0 +1,26 @@
+let waitForDebugLog = target =>
+  new Promise(resolve => {
+    Cc["@mozilla.org/appservices/logger;1"]
+      .getService(Ci.mozIAppServicesLogger)
+      .register(target, {
+        maxLevel: Ci.mozIServicesLogSink.LEVEL_INFO,
+        info: resolve,
+      });
+  });
+
+let rustLog = (target, message) => {
+  Cc["@mozilla.org/xpcom/debug;1"]
+    .getService(Ci.nsIDebug2)
+    .rustLog(target, message);
+};
+
+add_task(async () => {
+  let target = "app-services:webext_storage:sync";
+  let expectedMessage = "info error: uh oh";
+  let promiseMessage = waitForDebugLog(target);
+
+  rustLog(target, expectedMessage);
+
+  let actualMessage = await promiseMessage;
+  Assert.ok(actualMessage.includes(expectedMessage));
+});