Add tests

Author: SuperSodaSea

test/JestTransform.tests.ts

@@ -1,6 +1,6 @@
 import AdderWorker from 'worker:./workers/Adder.worker.ts';
 
-describe('Test', () =>
+describe('JestTransform', () =>
 {
     it('should work', async () =>
         new Promise<void>((resolve) =>

test/NoWorker.tests.ts

@@ -0,0 +1,23 @@
+import AdderWorker from 'worker:./workers/Adder.worker.ts';
+
+describe('NoWorker', () =>
+{
+    let savedWorker: typeof Worker;
+
+    beforeAll(() =>
+    {
+        savedWorker = globalThis.Worker;
+        // @ts-expect-error: remove Worker
+        delete globalThis.Worker;
+    });
+    afterAll(() =>
+    {
+        globalThis.Worker = savedWorker;
+    });
+
+    it('should throw if no Worker', () =>
+    {
+        expect(() => new AdderWorker()).toThrow(ReferenceError);
+    }
+    );
+});