47 lines
1.8 KiB
TypeScript
47 lines
1.8 KiB
TypeScript
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import { describe, expect, it } from 'vitest'
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import {
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advanceMarkdownFence,
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isInsideMarkdownFence,
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readMarkdownFence,
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type MarkdownFenceScanOptions,
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} from './markdownFences'
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describe('markdown fence scanning', () => {
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it('reads backtick and tilde fence openings with the default indentation rule', () => {
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expect(readMarkdownFence('```ts')).toEqual({ character: '`', length: 3 })
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expect(readMarkdownFence(' ~~~~')).toEqual({ character: '~', length: 4 })
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expect(readMarkdownFence(' ```ts')).toBeNull()
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expect(readMarkdownFence('not a fence')).toBeNull()
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})
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it('requires matching closing fence character and sufficient length', () => {
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const opening = readMarkdownFence('````ts')
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expect(advanceMarkdownFence('```', opening)).toBe(opening)
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expect(advanceMarkdownFence('~~~~', opening)).toBe(opening)
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expect(advanceMarkdownFence('````', opening)).toBeNull()
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})
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it('keeps strict closing fences to only the fence plus whitespace by default', () => {
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const opening = readMarkdownFence('```ts')
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expect(advanceMarkdownFence('```ts', opening)).toBe(opening)
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expect(advanceMarkdownFence('``` ', opening)).toBeNull()
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})
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it('supports the existing wikilink prefix scanner shape when requested', () => {
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const options: MarkdownFenceScanOptions = {
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closingMustEndLine: false,
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maxLeadingSpaces: null,
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}
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const opening = readMarkdownFence(' ```ts', options)
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expect(opening).toEqual({ character: '`', length: 3 })
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expect(advanceMarkdownFence(' ``` still treated as closing', opening, options)).toBeNull()
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})
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it('detects whether a markdown prefix is currently inside a fence', () => {
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expect(isInsideMarkdownFence('before\n~~~mermaid\nA --> B')).toBe(true)
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expect(isInsideMarkdownFence('before\n~~~mermaid\nA --> B\n~~~\nafter')).toBe(false)
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})
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})
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