test: add tests for ableToSign getter

Adds comprehensive test coverage for the ableToSign getter including:
- Document status validation
- Signer presence validation
- Signer status validation
- Edge cases (undefined document, empty signers array)

Signed-off-by: Vitor Mattos <[email protected]>

Author: vitormattos

src/store/sign.spec.js

@@ -6,6 +6,7 @@
 import { describe, expect, it, beforeEach } from 'vitest'
 import { setActivePinia, createPinia } from 'pinia'
 import { useSignStore } from './sign.js'
+import { FILE_STATUS } from '../constants.js'
 
 describe('useSignStore', () => {
 	beforeEach(() => {
@@ -44,4 +45,66 @@ describe('useSignStore', () => {
 			expect(store.pendingAction).toBe('createPassword')
 		})
 	})
+
+	describe('ableToSign getter', () => {
+		it('returns false when document status is not ABLE_TO_SIGN or PARTIAL_SIGNED', () => {
+			const store = useSignStore()
+			store.document = {
+				status: FILE_STATUS.DRAFT,
+				signers: [{ me: true, status: 1 }],
+			}
+			expect(store.ableToSign).toBe(false)
+		})
+
+		it('returns false when there is no signer with me: true', () => {
+			const store = useSignStore()
+			store.document = {
+				status: FILE_STATUS.ABLE_TO_SIGN,
+				signers: [{ me: false, status: 1 }],
+			}
+			expect(store.ableToSign).toBe(false)
+		})
+
+		it('returns false when signer status is not ABLE_TO_SIGN (status 1)', () => {
+			const store = useSignStore()
+			store.document = {
+				status: FILE_STATUS.ABLE_TO_SIGN,
+				signers: [{ me: true, status: 0 }],
+			}
+			expect(store.ableToSign).toBe(false)
+		})
+
+		it('returns true when document status is ABLE_TO_SIGN and signer can sign', () => {
+			const store = useSignStore()
+			store.document = {
+				status: FILE_STATUS.ABLE_TO_SIGN,
+				signers: [{ me: true, status: 1 }],
+			}
+			expect(store.ableToSign).toBe(true)
+		})
+
+		it('returns true when document status is PARTIAL_SIGNED and signer can sign', () => {
+			const store = useSignStore()
+			store.document = {
+				status: FILE_STATUS.PARTIAL_SIGNED,
+				signers: [{ me: true, status: 1 }],
+			}
+			expect(store.ableToSign).toBe(true)
+		})
+
+		it('returns false when document is undefined', () => {
+			const store = useSignStore()
+			store.document = undefined
+			expect(store.ableToSign).toBe(false)
+		})
+
+		it('returns false when signers array is empty', () => {
+			const store = useSignStore()
+			store.document = {
+				status: FILE_STATUS.ABLE_TO_SIGN,
+				signers: [],
+			}
+			expect(store.ableToSign).toBe(false)
+		})
+	})
 })