Add some get/setString tests.

test/strings.js

@@ -0,0 +1,29 @@
+(function() {
+
+    module("strings");
+    test("getSubString", function() {
+        equal(OpenSeadragon.getString("Errors.Dzi"),
+            "Hmm, this doesn't appear to be a valid Deep Zoom Image.",
+            "Read sub-string");
+    });
+
+    test("getInvalidString", function() {
+        equal(OpenSeadragon.getString("Greeting"), "",
+            "Handled unset string key");
+        equal(OpenSeadragon.getString("Errors"), "",
+            "Handled requesting parent key");
+    });
+
+    test("setString", function() {
+        OpenSeadragon.setString("Greeting", "Hello world");
+        equal(OpenSeadragon.getString("Greeting"), "Hello world",
+            "Set a string");
+    });
+
+    test("setSubString", function() {
+       OpenSeadragon.setString("CustomGreeting.Hello", "Hello world");
+       equal(OpenSeadragon.getString("CustomGreeting.Hello"), "Hello world",
+           "Set a sub-string");
+    });
+
+})();

test/test.html

@@ -16,5 +16,6 @@
     <script src="/build/openseadragon/openseadragon.min.js"></script>
     <script src="/test/util.js"></script>
     <script src="/test/basic.js"></script>
+    <script src="/test/strings.js"></script>
 </body>
 </html>