Bug 1253565 - [webext] Test "UnrecognizedProperty" on content_scripts manifest properties. r=kmag

MozReview-Commit-ID: CpNmXmHHOzO

--HG--
extra : rebase_source : 36325e52efdb4edaf32079ae9637b7f43076ebef

toolkit/components/extensions/test/mochitest/test_ext_contentscript.html

@@ -50,6 +50,7 @@ add_task(function* test_contentscript() {
           "matches": ["http://mochi.test/*/file_sample.html"],
           "js": ["content_script_start.js"],
           "run_at": "document_start",
+          "unrecognized_property": "with-a-random-value",
         },
         {
           "matches": ["http://mochi.test/*/file_sample.html"],
@@ -92,6 +93,14 @@ add_task(function* test_contentscript() {
 
   let chromeNamespacePromise = extension.awaitMessage("chrome-namespace-ok");
 
+  SimpleTest.waitForExplicitFinish();
+  let waitForConsole = new Promise(resolve => {
+    SimpleTest.monitorConsole(resolve, [{
+      message: /Reading manifest: Error processing content_scripts.*.unrecognized_property: An unexpected property was found/,
+    }]);
+  });
+
+
   yield extension.startup();
   info("extension loaded");
 
@@ -108,6 +117,9 @@ add_task(function* test_contentscript() {
 
   yield extension.unload();
   info("extension unloaded");
+
+  SimpleTest.endMonitorConsole();
+  yield waitForConsole;
 });
 </script>