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SRCmail/lib/__tests__/signature-utils.test.ts
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TypeScript

import { describe, expect, it } from 'vitest';
import {
appendPlainTextSignature,
getPlainTextSignature,
hasMeaningfulHtmlBody,
} from '../signature-utils';
describe('signature-utils', () => {
describe('getPlainTextSignature', () => {
it('prefers text signatures when present', () => {
expect(getPlainTextSignature({ textSignature: 'Regards,\nAlice', htmlSignature: '<p>Ignored</p>' })).toBe('Regards,\nAlice');
});
it('converts html-only signatures into plain text', () => {
expect(getPlainTextSignature({ htmlSignature: '<p>Alice Example<br><a href="mailto:alice@example.com">alice@example.com</a></p>' })).toBe('Alice Example\nalice@example.com');
});
});
describe('appendPlainTextSignature', () => {
it('appends a converted html signature to the text body', () => {
expect(appendPlainTextSignature('Hello there', { htmlSignature: '<p>Alice<br>Engineering</p>' })).toBe('Hello there\n\n-- \nAlice\nEngineering');
});
it('leaves the body untouched when no signature exists', () => {
expect(appendPlainTextSignature('Hello there', {})).toBe('Hello there');
});
});
describe('hasMeaningfulHtmlBody', () => {
it('prefers html bodies that preserve signature formatting', () => {
expect(hasMeaningfulHtmlBody('<div>Hello</div><br><p>Alice</p>')).toBe(true);
});
it('ignores minimal wrapper html with a single block', () => {
expect(hasMeaningfulHtmlBody('<div>Hello world</div>')).toBe(false);
});
});
});