test: cover sign request UUID helper

Signed-off-by: Vitor Mattos <1079143+vitormattos@users.noreply.github.com>

Author: vitormattos

src/tests/utils/signRequestUuid.spec.ts

@@ -0,0 +1,60 @@
+/**
+ * SPDX-FileCopyrightText: 2026 LibreCode coop and contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+
+import { describe, expect, it } from 'vitest'
+
+import {
+	getCurrentSigner,
+	getCurrentSignerSignRequestUuid,
+	getSigningRouteUuid,
+	getValidationRouteUuid,
+} from '../../utils/signRequestUuid.ts'
+
+describe('signRequestUuid utils', () => {
+	it('returns only the current signer when resolving signer context', () => {
+		expect(getCurrentSigner({
+			signers: [
+				{ sign_request_uuid: 'other-uuid' },
+				{ me: true, sign_request_uuid: 'current-uuid' },
+			],
+		})).toEqual({ me: true, sign_request_uuid: 'current-uuid' })
+	})
+
+	it('does not fall back to the first signer when there is no current signer', () => {
+		expect(getCurrentSignerSignRequestUuid({
+			signers: [{ sign_request_uuid: 'other-uuid' }],
+		})).toBeNull()
+	})
+
+	it('uses the provided fallback only when no current signer uuid exists', () => {
+		expect(getCurrentSignerSignRequestUuid(undefined, 'fallback-uuid')).toBe('fallback-uuid')
+	})
+
+	it('returns the file uuid for approver signing routes', () => {
+		expect(getSigningRouteUuid({
+			uuid: 'file-uuid',
+			settings: { isApprover: true },
+			signers: [{ me: true, sign_request_uuid: 'sign-request-uuid' }],
+		})).toBe('file-uuid')
+	})
+
+	it('returns the current signer sign_request_uuid for regular signer routes', () => {
+		expect(getSigningRouteUuid({
+			uuid: 'file-uuid',
+			signers: [{ me: true, sign_request_uuid: 'sign-request-uuid' }],
+		})).toBe('sign-request-uuid')
+	})
+
+	it('returns the file uuid for validation routes', () => {
+		expect(getValidationRouteUuid({
+			uuid: 'file-uuid',
+			signers: [{ me: true, sign_request_uuid: 'sign-request-uuid' }],
+		})).toBe('file-uuid')
+	})
+
+	it('falls back to numeric id for validation routes when uuid is unavailable', () => {
+		expect(getValidationRouteUuid({ id: 42 })).toBe(42)
+	})
+})