Refactor markdown test to read from file instead of hardcoded strings

src/test-markdown.ts

@@ -1,34 +1,6 @@
 import { renderMarkdown } from "./markdown"
 
-const lines = [
+const file = Bun.file("test/MARKDOWN.md")
-  "This is **bold** text",
+const content = await file.text()
-  "This is *italic* text",
-  "This is `inline code` text",
-  "Mix of **bold**, *italic*, and `code` in one line",
-  "**bold with `code` inside** bold",
-  "No markdown here",
-  "Multiple **bold one** and **bold two**",
-  "Nested-ish: **bold and *italic* together**",
-]
 
-for (const line of lines) {
+console.log(renderMarkdown(content))
-  console.log(`  ${line}`)
-  console.log(`  ${renderMarkdown(line)}`)
-  console.log()
-}
-
-// Code fence tests
-console.log("--- Code fence tests ---")
-const fenceTests = [
-  "Here is some code:\n```typescript\nconst x = 1\n```\nDone.",
-  "```\nhello\n```",
-  "```js\nconsole.log('hi')\n```",
-]
-
-for (const test of fenceTests) {
-  console.log("INPUT:")
-  console.log(test)
-  console.log("OUTPUT:")
-  console.log(renderMarkdown(test))
-  console.log()
-}