test: Add workflow api testing for webhooks (#18400)

packages/testing/playwright/tests/ui/webhook-external-trigger.spec.ts

@@ -0,0 +1,33 @@
+import { readFileSync } from 'fs';
+
+import { test, expect } from '../../fixtures/base';
+import { resolveFromRoot } from '../../utils/path-helper';
+
+test.describe('External Webhook Triggering @auth:owner', () => {
+	test('should create workflow via API, activate it, trigger webhook externally, and verify execution', async ({
+		api,
+	}) => {
+		const workflowDefinition = JSON.parse(
+			readFileSync(resolveFromRoot('workflows', 'simple-webhook-test.json'), 'utf8'),
+		);
+
+		const createdWorkflow = await api.workflowApi.createWorkflow(workflowDefinition);
+		expect(createdWorkflow.id).toBeDefined();
+
+		const workflowId = createdWorkflow.id;
+		await api.workflowApi.setActive(workflowId, true);
+
+		const testPayload = { message: 'Hello from Playwright test' };
+
+		const webhookResponse = await api.workflowApi.triggerWebhook('test-webhook', {
+			data: testPayload,
+		});
+		expect(webhookResponse.ok()).toBe(true);
+
+		const execution = await api.workflowApi.waitForExecution(workflowId, 10000);
+		expect(execution.status).toBe('success');
+
+		const executionDetails = await api.workflowApi.getExecution(execution.id);
+		expect(executionDetails.data).toContain('Hello from Playwright test');
+	});
+});