53 lines
1.9 KiB
TypeScript
53 lines
1.9 KiB
TypeScript
import type { MarkdownTree } from '../app/utils/markdown';
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import { expect, test } from 'bun:test';
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import { splitParagraphBreaks } from '../app/utils/markdown';
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test('paragraph splitting preserves nested formatting without mutating a cached parser tree', () => {
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const tree = { nodes: [
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['p', {}, 'before', ['br', {}], ['strong', {}, 'after']],
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['blockquote', {}, 'one', ['br', {}], ['em', {}, 'two']],
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] } as MarkdownTree;
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const original = structuredClone(tree);
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const result = splitParagraphBreaks(tree);
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expect(result.nodes).toEqual([
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['p', {}, 'before'],
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['p', {}, ['strong', {}, 'after']],
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['blockquote', {}, ['p', {}, 'one'], ['p', {}, ['em', {}, 'two']]],
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]);
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expect(tree).toEqual(original);
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expect(splitParagraphBreaks(tree)).toEqual(result);
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});
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test('br-free trees return by reference with no allocation', () => {
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const tree = { nodes: [
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['p', {}, 'plain ', ['strong', {}, 'text']],
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['ul', {}, ['li', {}, 'one'], ['li', {}, 'two']],
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] } as MarkdownTree;
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expect(splitParagraphBreaks(tree)).toBe(tree);
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});
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test('single newlines still split into sibling paragraphs', () => {
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const tree = { nodes: [
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['p', {}, 'line one', ['br', {}], 'line two'],
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] } as MarkdownTree;
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expect(splitParagraphBreaks(tree).nodes).toEqual([
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['p', {}, 'line one'],
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['p', {}, 'line two'],
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]);
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});
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test('nested changes rebuild only the affected path', () => {
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const tree = { nodes: [
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['blockquote', {}, ['p', {}, 'kept']],
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['p', {}, 'split', ['br', {}], 'me'],
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] } as MarkdownTree;
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const result = splitParagraphBreaks(tree);
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expect(result).not.toBe(tree);
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expect(result.nodes[0]).toBe(tree.nodes[0]);
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expect(result.nodes).toEqual([
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['blockquote', {}, ['p', {}, 'kept']],
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['p', {}, 'split'],
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['p', {}, 'me'],
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]);
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});
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