1 files changed, 73 insertions, 0 deletions
diff --git a/toolkit/components/osfile/tests/xpcshell/test_logging.js b/toolkit/components/osfile/tests/xpcshell/test_logging.js
new file mode 100644
index 0000000000..2fa8f9dbec
--- /dev/null
+++ b/toolkit/components/osfile/tests/xpcshell/test_logging.js
@@ -0,0 +1,73 @@
+"use strict";
+
+const { OS } = ChromeUtils.import("resource://gre/modules/osfile.jsm");
+
+/**
+ * Tests logging by passing OS.Shared.LOG both an object with its own
+ * toString method, and one with the default.
+ */
+function run_test() {
+  do_test_pending();
+  let messageCount = 0;
+
+  info("Test starting");
+
+  // Create a console listener.
+  let consoleListener = {
+    observe(aMessage) {
+      // Ignore unexpected messages.
+      if (!(aMessage instanceof Ci.nsIConsoleMessage)) {
+        return;
+      }
+      // This is required, as printing to the |Services.console|
+      // while in the observe function causes an exception.
+      executeSoon(function() {
+        info("Observing message " + aMessage.message);
+        if (!aMessage.message.includes("TEST OS")) {
+          return;
+        }
+
+        ++messageCount;
+        if (messageCount == 1) {
+          Assert.equal(aMessage.message, 'TEST OS {"name":"test"}\n');
+        }
+        if (messageCount == 2) {
+          Assert.equal(aMessage.message, "TEST OS name is test\n");
+          toggleConsoleListener(false);
+          do_test_finished();
+        }
+      });
+    },
+  };
+
+  // Set/Unset the console listener.
+  function toggleConsoleListener(pref) {
+    info("Setting console listener: " + pref);
+    Services.prefs.setBoolPref("toolkit.osfile.log", pref);
+    Services.prefs.setBoolPref("toolkit.osfile.log.redirect", pref);
+    Services.console[pref ? "registerListener" : "unregisterListener"](
+      consoleListener
+    );
+  }
+
+  toggleConsoleListener(true);
+
+  let objectDefault = { name: "test" };
+  let CustomToString = function() {
+    this.name = "test";
+  };
+  CustomToString.prototype.toString = function() {
+    return "name is " + this.name;
+  };
+  let objectCustom = new CustomToString();
+
+  info(OS.Shared.LOG.toSource());
+
+  info("Logging 1");
+  OS.Shared.LOG(objectDefault);
+
+  info("Logging 2");
+  OS.Shared.LOG(objectCustom);
+  // Once both messages are observed OS.Shared.DEBUG, and OS.Shared.TEST
+  // are reset to false.
+}