test(lib): init my custom plugin

src/__tests__/unit/lib/my-custom-plugin.test.ts

@@ -0,0 +1,24 @@
+import {MyCustomPlugin} from '../../../lib/my-custom-plugin';
+
+describe('lib/my-custom-plugin: ', () => {
+  describe('MyCustomPlugin(): ', () => {
+    it('has metadata field.', () => {
+      const pluginInstance = MyCustomPlugin({});
+
+      expect(pluginInstance).toHaveProperty('metadata');
+      expect(pluginInstance).toHaveProperty('execute');
+      expect(pluginInstance.metadata).toHaveProperty('kind');
+      expect(typeof pluginInstance.execute).toBe('function');
+    });
+
+    describe('execute(): ', () => {
+      it('applies logic on provided inputs array.', async () => {
+        const pluginInstance = MyCustomPlugin({});
+        const inputs = [{}];
+
+        const response = await pluginInstance.execute(inputs, {});
+        expect(response).toEqual(inputs);
+      });
+    });
+  });
+});