1 files changed, 33 insertions, 0 deletions
diff --git a/js/xpconnect/tests/unit/test_isModuleLoaded.js b/js/xpconnect/tests/unit/test_isModuleLoaded.js
new file mode 100644
index 000000000..8b1f9eb3d
--- /dev/null
+++ b/js/xpconnect/tests/unit/test_isModuleLoaded.js
@@ -0,0 +1,33 @@
+const Cu = Components.utils;
+
+function run_test() {
+  // Existing module.
+  do_check_true(!Cu.isModuleLoaded("resource://gre/modules/ISO8601DateUtils.jsm"),
+                "isModuleLoaded returned correct value for non-loaded module");
+  Cu.import("resource://gre/modules/ISO8601DateUtils.jsm");
+  do_check_true(Cu.isModuleLoaded("resource://gre/modules/ISO8601DateUtils.jsm"),
+                "isModuleLoaded returned true after loading that module");
+  Cu.unload("resource://gre/modules/ISO8601DateUtils.jsm");
+  do_check_true(!Cu.isModuleLoaded("resource://gre/modules/ISO8601DateUtils.jsm"),
+                "isModuleLoaded returned false after unloading that module");
+
+  // Non-existing module
+  do_check_true(!Cu.isModuleLoaded("resource://gre/modules/ISO8601DateUtils1.jsm"),
+                "isModuleLoaded returned correct value for non-loaded module");
+  try {
+    Cu.import("resource://gre/modules/ISO8601DateUtils1.jsm");
+    do_check_true(false,
+                  "Should have thrown while trying to load a non existing file");
+  } catch (ex) {}
+  do_check_true(!Cu.isModuleLoaded("resource://gre/modules/ISO8601DateUtils1.jsm"),
+                "isModuleLoaded returned correct value for non-loaded module");
+
+  // incorrect url
+  try {
+    Cu.isModuleLoaded("resource://modules/ISO8601DateUtils1.jsm");
+    do_check_true(false,
+                  "Should have thrown while trying to load a non existing file");
+  } catch (ex) {
+    do_check_true(true, "isModuleLoaded threw an exception while loading incorrect uri");
+  }
+}