Merge pull request #4983 from Jetshree/test-PitchBlocks

test: add tests for PitchBlocks.js

Author: omsuneri

js/blocks/PitchBlocks.js

@@ -2161,3 +2161,7 @@ function setupPitchBlocks(activity) {
     new Pitch2Block().setup(activity);
     new PitchBlock().setup(activity);
 }
+
+if (typeof module !== "undefined" && module.exports) {
+    module.exports = { setupPitchBlocks };
+}