test(sign-view): keep certificate revocation errors in UI state

Add submitSignature test for API signError with revoked certificate response.

Verify the certificate modal is not opened and signing errors are stored for user feedback.

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

Author: vitormattos

src/tests/views/SignPDF/Sign.spec.ts

@@ -400,6 +400,53 @@ describe('Sign.vue - signWithTokenCode', () => {
 		})
 	})
 
+	describe('Sign.vue - API error handling', () => {
+		it('keeps certificate validation errors in signStore and does not open certificate modal', async () => {
+			const SignComponent = await import('../../../views/SignPDF/_partials/Sign.vue')
+			const submitSignature = (SignComponent.default as any).methods.submitSignature
+
+			const apiErrors = [{ message: 'Certificate has been revoked', code: 422 }]
+			const context = {
+				loading: false,
+				elements: [],
+				canCreateSignature: false,
+				signRequestUuid: 'test-sign-request-uuid',
+				signMethodsStore: {
+					certificateEngine: 'openssl',
+				},
+				signatureElementsStore: {
+					signs: {},
+				},
+				actionHandler: {
+					showModal: vi.fn(),
+					closeModal: vi.fn(),
+				},
+				signStore: {
+					document: { id: 10 },
+					clearSigningErrors: vi.fn(),
+					setSigningErrors: vi.fn(),
+					submitSignature: vi.fn().mockRejectedValue({
+						type: 'signError',
+						errors: apiErrors,
+					}),
+				},
+				$emit: vi.fn(),
+				sidebarStore: {
+					hideSidebar: vi.fn(),
+				},
+			}
+
+			await submitSignature.call(context, {
+				method: 'password',
+				token: '123456',
+			})
+
+			expect(context.actionHandler.showModal).not.toHaveBeenCalled()
+			expect(context.signStore.setSigningErrors).toHaveBeenCalledWith(apiErrors)
+			expect(context.loading).toBe(false)
+		})
+	})
+
 	describe('proceedWithSigning - Full flow with WhatsApp token', () => {
 		let proceedWithSigningLogic: ProceedWithSigningLogic