From 90f5226666dc52a0ec9ccfe8236534cfc4f6848a Mon Sep 17 00:00:00 2001
From: Gregory Szorc <gps@mozilla.com>
Date: Sat, 24 Sep 2016 19:31:48 -0700
Subject: [PATCH] Bug 1305444 - Add test for dispatched method throwing an
 error; r=Yoric

We didn't have explicit test coverage of this before, surprisingly.

MozReview-Commit-ID: 32ZnxZYLXDg

--HG--
extra : rebase_source : 07110ed90b69c5b0fb73fda8264db2eb755ca6a4
---
 .../promiseworker/tests/xpcshell/data/worker.js          | 6 +++++-
 .../promiseworker/tests/xpcshell/test_Promise.js         | 9 +++++++++
 2 files changed, 14 insertions(+), 1 deletion(-)

diff --git a/toolkit/components/promiseworker/tests/xpcshell/data/worker.js b/toolkit/components/promiseworker/tests/xpcshell/data/worker.js
index 3c612a528691..b4750788b5ce 100644
--- a/toolkit/components/promiseworker/tests/xpcshell/data/worker.js
+++ b/toolkit/components/promiseworker/tests/xpcshell/data/worker.js
@@ -26,5 +26,9 @@ self.addEventListener("message", msg => worker.handleMessage(msg));
 var Agent = {
   bounce: function(...args) {
     return args;
-  }
+  },
+
+  throwError: function(msg, ...args) {
+     throw new Error(msg);
+  },
 };
diff --git a/toolkit/components/promiseworker/tests/xpcshell/test_Promise.js b/toolkit/components/promiseworker/tests/xpcshell/test_Promise.js
index a2df6fb4387b..70f49e92e0c5 100644
--- a/toolkit/components/promiseworker/tests/xpcshell/test_Promise.js
+++ b/toolkit/components/promiseworker/tests/xpcshell/test_Promise.js
@@ -106,3 +106,12 @@ add_task(function* test_transfer_with_meta() {
     Assert.equal(result[i], i);
   }
 });
+
+add_task(function* test_throw_error() {
+  try {
+    yield worker.post("throwError", ["error message"]);
+    Assert.ok(false, "should have thrown");
+  } catch (ex) {
+    Assert.equal(ex.message, "Error: error message");
+  }
+});