1 files changed, 26 insertions, 0 deletions
diff --git a/js/xpconnect/tests/unit/test_sandbox_name.js b/js/xpconnect/tests/unit/test_sandbox_name.js
new file mode 100644
index 0000000000..1eaa971a9e
--- /dev/null
+++ b/js/xpconnect/tests/unit/test_sandbox_name.js
@@ -0,0 +1,26 @@
+"use strict";
+
+/**
+ * Test that the name of a sandbox contains the name of all principals.
+ */
+function test_sandbox_name() {
+  let names = [
+    "http://example.com/?" + Math.random(),
+    "http://example.org/?" + Math.random()
+  ];
+  let sandbox = Cu.Sandbox(names);
+  let fileName = Cu.evalInSandbox(
+    "(new Error()).fileName",
+    sandbox,
+    "latest" /*js version*/,
+    ""/*file name*/
+  );
+
+  for (let name of names) {
+    Assert.ok(fileName.includes(name), `Name ${name} appears in ${fileName}`);
+  }
+};
+
+function run_test() {
+  test_sandbox_name();
+}