1 files changed, 61 insertions, 0 deletions
diff --git a/tests/unit_tests/test_chrome_stubs.coffee b/tests/unit_tests/test_chrome_stubs.coffee
new file mode 100644
index 00000000..e9c48f31
--- /dev/null
+++ b/tests/unit_tests/test_chrome_stubs.coffee
@@ -0,0 +1,61 @@
+
+#
+# This is a stub for chrome.strorage.sync for testing.
+# It does what chrome.storage.sync should do (roughly), but does so synchronously.
+#
+
+global.chrome =
+  runtime: {}
+
+  storage:
+
+    # chrome.storage.onChanged
+    onChanged:
+      addListener: (func) -> @func = func
+
+      # Fake a callback from chrome.storage.sync.
+      call: (key, value) ->
+        chrome.runtime = { lastError: undefined }
+        key_value = {}
+        key_value[key] = { newValue: value }
+        @func(key_value,'synced storage stub') if @func
+
+      callEmpty: (key) ->
+        chrome.runtime = { lastError: undefined }
+        if @func
+          items = {}
+          items[key] = {}
+          @func(items,'synced storage stub')
+
+    # chrome.storage.sync
+    sync:
+      store: {}
+
+      set: (items, callback) ->
+        chrome.runtime = { lastError: undefined }
+        for own key, value of items
+          @store[key] = value
+        callback() if callback
+        # Now, generate (supposedly asynchronous) notifications for listeners.
+        for own key, value of items
+          global.chrome.storage.onChanged.call(key,value)
+
+      get: (keys, callback) ->
+        chrome.runtime = { lastError: undefined }
+        if keys == null
+          keys = []
+          for own key, value of @store
+            keys.push key
+        items = {}
+        for key in keys
+          items[key] = @store[key]
+        # Now, generate (supposedly asynchronous) callback
+        callback items if callback
+
+      remove: (key, callback) ->
+        chrome. runtime = { lastError: undefined }
+        if key of @store
+          delete @store[key]
+        callback() if callback
+        # Now, generate (supposedly asynchronous) notification for listeners.
+        global.chrome.storage.onChanged.callEmpty(key)