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packages/nodes-base/nodes/Totp/test/Totp.node.test.ts

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+import { NodeTestHarness } from '@nodes-testing/node-test-harness';
+import type { WorkflowTestData } from 'n8n-workflow';
+import * as OTPAuth from 'otpauth';
+
+describe('Execute TOTP node', () => {
+	const testHarness = new NodeTestHarness();
+
+	// Test constants
+	const FIXED_TIMESTAMP = 1640000000000; // 2021-12-20T11:33:20.000Z
+	const TEST_SECRET = 'BVDRSBXQB2ZEL5HE';
+	const TEST_LABEL = 'GitHub:john-doe';
+
+	beforeAll(() => {
+		jest.spyOn(Date, 'now').mockReturnValue(FIXED_TIMESTAMP);
+	});
+
+	afterAll(() => {
+		jest.restoreAllMocks();
+	});
+
+	// Pre-calculate expected token using the real OTPAuth library
+	// Note: The token value is the same whether label/issuer is present or not,
+	// since those fields are metadata and don't affect the TOTP algorithm
+	const expectedToken = new OTPAuth.TOTP({
+		secret: TEST_SECRET,
+		algorithm: 'SHA1',
+		digits: 6,
+		period: 30,
+	}).generate({ timestamp: FIXED_TIMESTAMP });
+
+	const tests: WorkflowTestData[] = [
+		{
+			description: 'Generate TOTP Token with label',
+			input: {
+				workflowData: testHarness.readWorkflowJSON('Totp.workflow.test.json'),
+			},
+			output: {
+				nodeData: {
+					TOTP: [[{ json: expect.objectContaining({ token: expectedToken }) }]],
+				},
+			},
+			credentials: {
+				totpApi: {
+					label: TEST_LABEL,
+					secret: TEST_SECRET,
+				},
+			},
+		},
+		{
+			description: 'Generate TOTP Token without label',
+			input: {
+				workflowData: testHarness.readWorkflowJSON('Totp.workflow.test.json'),
+			},
+			output: {
+				nodeData: {
+					// When no label is provided, the node should still generate a valid token
+					TOTP: [[{ json: expect.objectContaining({ token: expectedToken }) }]],
+				},
+			},
+			credentials: {
+				totpApi: {
+					secret: TEST_SECRET,
+				},
+			},
+		},
+	];
+
+	for (const testData of tests) {
+		testHarness.setupTest(testData);
+	}
+});