test suite for js/turtledefs.js (#4383)

* Create test file turtledefs.test.js

* Exporting modules for test

* Updating test turtledefs.test.js

* updating export modules

Author: omsuneri

js/__tests__/turtledefs.test.js

@@ -0,0 +1,47 @@
+global._ = jest.fn((str) => str);  
+global._THIS_IS_TURTLE_BLOCKS_ = true;
+const {
+    createDefaultStack,
+    LOGOJA1,
+    NUMBERBLOCKDEFAULT,
+    DEFAULTPALETTE,
+    TITLESTRING
+} = require('../turtledefs');
+
+global.GUIDEURL = "guide url";
+global.RUNBUTTON = "RUNBUTTON";
+global.STOPBUTTON = "STOPBUTTON";
+global.HELPTURTLEBUTTON = "HELPTURTLEBUTTON";
+global.LANGUAGEBUTTON = "LANGUAGEBUTTON";
+
+if (GUIDEURL === "guide url") {
+  GUIDEURL = "https://github.com/sugarlabs/turtleblocksjs/tree/master/guide/README.md"; 
+}
+
+describe("turtledefs.js", () => {
+  test("LOGOJA1 should be properly initialized", () => {
+    expect(LOGOJA1).toBeDefined();
+    expect(typeof LOGOJA1).toBe("string");
+  });
+
+  test("NUMBERBLOCKDEFAULT should be initialized correctly", () => {
+    expect(NUMBERBLOCKDEFAULT).toBeDefined();
+    expect(NUMBERBLOCKDEFAULT).toBe(100);
+  });
+
+  test("DEFAULTPALETTE should have correct value", () => {
+    expect(DEFAULTPALETTE).toBe("turtle");
+  });
+
+  test("GUIDEURL should default to the correct URL", () => {
+    expect(GUIDEURL).toBe("https://github.com/sugarlabs/turtleblocksjs/tree/master/guide/README.md");
+  });
+
+  test("TITLESTRING should be defined", () => {
+    expect(TITLESTRING).toBeDefined();
+  });
+
+  test("createDefaultStack function should be callable", () => {
+    expect(typeof createDefaultStack).toBe("function");
+  });
+});

js/turtledefs.js

@@ -817,3 +817,12 @@ const createHelpContent = (activity) => {
         ]);
     }
 };
+if (typeof module !== "undefined" && module.exports) {
+    module.exports = {
+        createDefaultStack,
+        LOGOJA1,
+        NUMBERBLOCKDEFAULT,
+        DEFAULTPALETTE,
+        TITLESTRING
+      }
+}