1 files changed, 3 insertions, 0 deletions
diff --git a/contexts/data/lib/closure-library/closure/goog/module/testdata/modA_2.js b/contexts/data/lib/closure-library/closure/goog/module/testdata/modA_2.js
index 3d510eb..4674c13 100644
--- a/contexts/data/lib/closure-library/closure/goog/module/testdata/modA_2.js
+++ b/contexts/data/lib/closure-library/closure/goog/module/testdata/modA_2.js
@@ -21,4 +21,7 @@ goog.provide('goog.module.testdata.modA_2');
 
 goog.require('goog.module.ModuleManager');
 
+if (window.modA2Loaded) throw Error('modA_2 loaded twice');
+window.modA2Loaded = true;
+
 goog.module.ModuleManager.getInstance().setLoaded('modA');