diff --git a/src/test-markdown.ts b/src/test-markdown.ts
index c8ef41a..1ce6c1c 100644
--- a/src/test-markdown.ts
+++ b/src/test-markdown.ts
@@ -1,34 +1,6 @@
 import { renderMarkdown } from "./markdown"
 
-const lines = [
-  "This is **bold** 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**",
-]
+const file = Bun.file("test/MARKDOWN.md")
+const content = await file.text()
 
-for (const line of lines) {
-  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()
-}
+console.log(renderMarkdown(content))
diff --git a/test/MARKDOWN.md b/test/MARKDOWN.md
new file mode 100644
index 0000000..15a87fd
--- /dev/null
+++ b/test/MARKDOWN.md
@@ -0,0 +1,116 @@
+# Test Markdown Document
+
+This document exercises a variety of Markdown features for testing purposes.
+
+## Inline Formatting
+
+This is **bold**, this is *italic*, and this is ***bold italic***.
+Here is `inline code` and ~~strikethrough~~ text.
+
+## Links and Images
+
+- [Example Link](https://example.com)
+- [Link with title](https://example.com "Example Title")
+- ![Alt text for image](https://via.placeholder.com/150)
+
+## Lists
+
+### Unordered
+
+- Item one
+- Item two
+  - Nested item A
+  - Nested item B
+    - Deep nested
+- Item three
+
+### Ordered
+
+1. First
+2. Second
+3. Third
+   1. Sub-item
+   2. Sub-item
+
+### Task List
+
+- [x] Completed task
+- [ ] Incomplete task
+- [ ] Another incomplete task
+
+## Blockquotes
+
+> This is a blockquote.
+>
+> > This is a nested blockquote.
+
+## Code Blocks
+
+Inline: `console.log("hello")`
+
+Fenced with language:
+
+```typescript
+function greet(name: string): string {
+  return `Hello, ${name}!`;
+}
+```
+
+Fenced without language:
+
+```
+plain code block
+no syntax highlighting
+```
+
+Indented code block:
+
+    four spaces
+    makes a code block
+
+## Tables
+
+| Left | Center | Right |
+|:-----|:------:|------:|
+| A1   |   B1   |    C1 |
+| A2   |   B2   |    C2 |
+| A3   |   B3   |    C3 |
+
+## Horizontal Rules
+
+---
+
+***
+
+___
+
+## HTML (inline)
+
+<details>
+<summary>Click to expand</summary>
+
+Hidden content inside a details block.
+
+</details>
+
+## Escapes and Special Characters
+
+\*not italic\* and \`not code\`
+
+Ampersand: &amp; | Less than: &lt; | Greater than: &gt;
+
+## Footnotes
+
+Here is a sentence with a footnote[^1].
+
+[^1]: This is the footnote content.
+
+## Heading Levels
+
+### H3
+
+#### H4
+
+##### H5
+
+###### H6