1 files changed, 30 insertions, 0 deletions
diff --git a/netwerk/test/unit/test_gre_resources.js b/netwerk/test/unit/test_gre_resources.js
new file mode 100644
index 0000000000..4ea8d04b95
--- /dev/null
+++ b/netwerk/test/unit/test_gre_resources.js
@@ -0,0 +1,30 @@
+// test that things that are expected to be in gre-resources are still there
+
+"use strict";
+
+function wrapInputStream(input) {
+  var nsIScriptableInputStream = Ci.nsIScriptableInputStream;
+  var factory = Cc["@mozilla.org/scriptableinputstream;1"];
+  var wrapper = factory.createInstance(nsIScriptableInputStream);
+  wrapper.init(input);
+  return wrapper;
+}
+
+function check_file(file) {
+  var channel = NetUtil.newChannel({
+    uri: "resource://gre-resources/" + file,
+    loadUsingSystemPrincipal: true,
+  });
+  try {
+    let instr = wrapInputStream(channel.open());
+    Assert.ok(!!instr.read(1024).length);
+  } catch (e) {
+    do_throw("Failed to read " + file + " from gre-resources:" + e);
+  }
+}
+
+function run_test() {
+  for (let file of ["ua.css"]) {
+    check_file(file);
+  }
+}