chore: add test for whats app provider

providers/whatsapp-business/src/lib/whatsapp-business.provider.spec.ts

@@ -1,3 +1,81 @@
 import { WhatsappBusinessChatProvider } from './whatsapp-business.provider';
 
-test('should trigger whatsapp-business library correctly', async () => {});
+const mockConfig = {
+    apiKey: "TEST_API_KEY",
+    apiVersion: "TEST_API_VERSION",
+    applicationId: "TEST_APPLICATION_ID"
+};
+
+const mockMessage = {
+  channel: "phone_number",
+  content: JSON.stringify({
+		"name": "template_request",
+		"language": {
+			"code": "it"
+		},
+		"components": [
+			{
+				"type": "header",
+				"parameters": [
+					{
+						"type": "text",
+						"text": "135345345"
+					}
+				]
+			},
+			{
+				"type": "body",
+				"parameters": [
+					{
+						"type": "text",
+						"text": "135345345"
+					},
+					{
+						"type": "text",
+						"text": "135345345"
+					},
+					{
+						"type": "text",
+						"text": "135345345"
+					}
+				]
+			},
+			{
+				"type": "button",
+				"sub_type": "quick_reply",
+				"index": "0",
+				"parameters": [
+					{
+						"type": "payload",
+						"payload": "test"
+					}
+				]
+			}
+		]
+	})
+}
+
+test('should trigger whatsapp-business library correctly', async () => {
+
+  const provider = new WhatsappBusinessChatProvider(mockConfig) 
+
+  await provider.sendMessage(mockMessage);
+
+  const spy = jest
+    .spyOn(provider, 'sendMessage')
+    .mockImplementation(async () => {
+      return {
+        id: '67890-test',
+        date: new Date().toISOString(),
+        // eslint-disable-next-line @typescript-eslint/no-explicit-any
+      } as any;
+    });
+
+  await provider.sendMessage(mockMessage);
+
+  expect(spy).toHaveBeenCalled();
+
+  expect(spy).toHaveBeenCalledWith(mockMessage);
+
+
+});