diff --git a/plugins/plugin-md-power/__test__/abbrPlugin.spec.ts b/plugins/plugin-md-power/__test__/abbrPlugin.spec.ts
new file mode 100644
index 00000000..eb5d4bf1
--- /dev/null
+++ b/plugins/plugin-md-power/__test__/abbrPlugin.spec.ts
@@ -0,0 +1,245 @@
+import MarkdownIt from 'markdown-it'
+import { describe, expect, it } from 'vitest'
+import { abbrPlugin } from '../src/node/inline/abbr.js'
+
+function createMarkdown(globalAbbreviations?: Record<string, string>) {
+  return MarkdownIt().use(abbrPlugin, globalAbbreviations)
+}
+
+describe('abbrPlugin', () => {
+  it('should parse abbreviation definition', () => {
+    const md = createMarkdown()
+    const code = `*[HTML]: HyperText Markup Language
+
+This is HTML content.`
+
+    const result = md.render(code)
+    expect(result).toContain('Abbreviation')
+    expect(result).toContain('HTML')
+    expect(result).toContain('HyperText Markup Language')
+  })
+
+  it('should parse multiple abbreviation definitions', () => {
+    const md = createMarkdown()
+    const code = `*[HTML]: HyperText Markup Language
+*[CSS]: Cascading Style Sheets
+
+HTML and CSS are web technologies.`
+
+    const result = md.render(code)
+    expect(result).toContain('HTML')
+    expect(result).toContain('CSS')
+  })
+
+  it('should work with global abbreviations', () => {
+    const md = createMarkdown({ API: 'Application Programming Interface' })
+    const code = `This is an API documentation.`
+
+    const result = md.render(code)
+    expect(result).toContain('Abbreviation')
+    expect(result).toContain('API')
+    expect(result).toContain('Application Programming Interface')
+  })
+
+  it('should merge local and global abbreviations', () => {
+    const md = createMarkdown({ API: 'Application Programming Interface' })
+    const code = `*[SDK]: Software Development Kit
+
+API and SDK are common terms.`
+
+    const result = md.render(code)
+    expect(result).toContain('API')
+    expect(result).toContain('SDK')
+  })
+
+  it('should handle abbreviation in middle of text', () => {
+    const md = createMarkdown()
+    const code = `*[TEST]: Test Abbreviation
+
+This TEST is important.`
+
+    const result = md.render(code)
+    expect(result).toContain('TEST')
+    expect(result).toContain('Test Abbreviation')
+  })
+
+  it('should handle abbreviation at start of text', () => {
+    const md = createMarkdown()
+    const code = `*[HTML]: HyperText Markup Language
+
+HTML is a markup language.`
+
+    const result = md.render(code)
+    expect(result).toContain('Abbreviation')
+  })
+
+  it('should handle abbreviation at end of text', () => {
+    const md = createMarkdown()
+    const code = `*[HTML]: HyperText Markup Language
+
+Learn HTML`
+
+    const result = md.render(code)
+    expect(result).toContain('Abbreviation')
+  })
+
+  it('should handle multiple occurrences of same abbreviation', () => {
+    const md = createMarkdown()
+    const code = `*[HTML]: HyperText Markup Language
+
+HTML, HTML, and more HTML.`
+
+    const result = md.render(code)
+    expect(result).toContain('HTML')
+    expect(result).toContain('HyperText Markup Language')
+  })
+
+  it('should not match partial words', () => {
+    const md = createMarkdown()
+    const code = `*[HTML]: HyperText Markup Language
+
+This is HTML but not XHTML.`
+
+    const result = md.render(code)
+    expect(result).toContain('HTML')
+  })
+
+  it('should handle empty abbreviation definition gracefully', () => {
+    const md = createMarkdown()
+    const code = `*[]: Empty definition
+
+Some text.`
+
+    const result = md.render(code)
+    expect(result).toBeDefined()
+  })
+
+  it('should handle case-sensitive abbreviations', () => {
+    const md = createMarkdown()
+    const code = `*[HTML]: HyperText Markup Language
+
+html is different from HTML.`
+
+    const result = md.render(code)
+    expect(result).toContain('HTML')
+  })
+
+  it('should handle abbreviation with markdown in title', () => {
+    const md = createMarkdown()
+    const code = `*[MD]: **Markdown** text
+
+MD is great.`
+
+    const result = md.render(code)
+    expect(result).toContain('MD')
+  })
+
+  it('should handle empty global abbreviations', () => {
+    const md = createMarkdown({})
+    const code = `*[TEST]: Test
+
+TEST is defined.`
+
+    const result = md.render(code)
+    expect(result).toContain('TEST')
+  })
+
+  it('should handle escaped characters in label', () => {
+    const md = createMarkdown()
+    const code = `*[HTML\\[1\\]]: HTML Version 1
+
+HTML[1] is old.`
+
+    const result = md.render(code)
+    expect(result).toContain('HTML[1]')
+  })
+
+  it('should handle abbreviation with special characters in title', () => {
+    const md = createMarkdown()
+    const code = `*[XML]: eXtensible Markup Language
+
+This is XML.`
+
+    const result = md.render(code)
+    expect(result).toContain('XML')
+  })
+
+  it('should handle definition with empty title', () => {
+    const md = createMarkdown()
+    const code = `*[TEST]:
+
+Some text.`
+
+    const result = md.render(code)
+    expect(result).not.toContain('Abbreviation')
+  })
+
+  it('should handle definition with only label', () => {
+    const md = createMarkdown()
+    const code = `*[TEST]:
+
+Some text.`
+
+    const result = md.render(code)
+    expect(result).not.toContain('Abbreviation')
+  })
+
+  it('should handle unclosed bracket in definition', () => {
+    const md = createMarkdown()
+    const code = `*[TEST: Test
+
+Some text.`
+
+    const result = md.render(code)
+    expect(result).toBeDefined()
+  })
+
+  it('should handle nested bracket in label', () => {
+    const md = createMarkdown()
+    const code = `*[TEST[INNER]]: Test Abbreviation
+
+Some text.`
+
+    const result = md.render(code)
+    expect(result).toBeDefined()
+  })
+
+  it('should handle global abbreviations with colon prefix', () => {
+    const md = createMarkdown({ ':API': 'Application Programming Interface' })
+    const code = `This is an API call.`
+
+    const result = md.render(code)
+    expect(result).toContain('API')
+  })
+
+  it('should handle abbreviation adjacent to punctuation', () => {
+    const md = createMarkdown()
+    const code = `*[HTML]: HyperText Markup Language
+
+Use HTML, CSS, and JS.`
+
+    const result = md.render(code)
+    expect(result).toContain('Abbreviation')
+    expect(result).toContain('HTML')
+  })
+
+  it('should handle abbreviation at sentence end', () => {
+    const md = createMarkdown()
+    const code = `*[HTML]: HyperText Markup Language
+
+This is HTML.`
+
+    const result = md.render(code)
+    expect(result).toContain('Abbreviation')
+  })
+
+  it('should handle abbreviation in parentheses', () => {
+    const md = createMarkdown()
+    const code = `*[HTML]: HyperText Markup Language
+
+See (HTML) for details.`
+
+    const result = md.render(code)
+    expect(result).toContain('Abbreviation')
+  })
+})
diff --git a/plugins/plugin-md-power/__test__/annotationPlugin.spec.ts b/plugins/plugin-md-power/__test__/annotationPlugin.spec.ts
new file mode 100644
index 00000000..cfa42f62
--- /dev/null
+++ b/plugins/plugin-md-power/__test__/annotationPlugin.spec.ts
@@ -0,0 +1,269 @@
+import MarkdownIt from 'markdown-it'
+import { describe, expect, it } from 'vitest'
+import { annotationPlugin } from '../src/node/inline/annotation.js'
+
+function createMarkdown(globalAnnotations?: Record<string, string | string[]>) {
+  return MarkdownIt().use(annotationPlugin, globalAnnotations)
+}
+
+describe('annotationPlugin', () => {
+  it('should parse annotation definition and reference', () => {
+    const md = createMarkdown()
+    const code = `[+note]: This is a note annotation
+
+This is a paragraph with a [+note] annotation.`
+
+    const result = md.render(code)
+    expect(result).toContain('Annotation')
+    expect(result).toContain('note')
+    expect(result).toContain('This is a note annotation')
+  })
+
+  it('should parse multiple annotation definitions', () => {
+    const md = createMarkdown()
+    const code = `[+note]: First note
+[+tip]: Second tip
+
+This has [+note] and [+tip].`
+
+    const result = md.render(code)
+    expect(result).toContain('note')
+    expect(result).toContain('tip')
+  })
+
+  it('should merge local and global annotations', () => {
+    const md = createMarkdown({ global: 'Global annotation' })
+    const code = `[+local]: Local annotation
+
+This uses [+global] and [+local].`
+
+    const result = md.render(code)
+    expect(result).toContain('global')
+    expect(result).toContain('local')
+  })
+
+  it('should handle multiple references to same annotation', () => {
+    const md = createMarkdown()
+    const code = `[+note]: Same note
+
+First [+note], second [+note], third [+note].`
+
+    const result = md.render(code)
+    expect(result).toContain('note')
+    expect(result).toContain('Same note')
+  })
+
+  it('should handle multi-line annotation', () => {
+    const md = createMarkdown()
+    const code = `[+note]: This is a
+  multi-line annotation
+  with multiple lines
+
+This has [+note].`
+
+    const result = md.render(code)
+    expect(result).toContain('Annotation')
+  })
+
+  it('should handle annotation with markdown content', () => {
+    const md = createMarkdown()
+    const code = `[+note]: This is **bold** and *italic*
+
+This has [+note].`
+
+    const result = md.render(code)
+    expect(result).toContain('Annotation')
+  })
+
+  it('should handle annotation with code', () => {
+    const md = createMarkdown()
+    const code = `[+code]: Use \`code\` syntax
+
+This has [+code].`
+
+    const result = md.render(code)
+    expect(result).toContain('Annotation')
+  })
+
+  it('should handle annotation with links', () => {
+    const md = createMarkdown()
+    const code = `[+link]: See [documentation](https://example.com)
+
+Check [+link].`
+
+    const result = md.render(code)
+    expect(result).toContain('Annotation')
+  })
+
+  it('should handle multiple annotations for same label', () => {
+    const md = createMarkdown()
+    const code = `[+multi]: First annotation
+[+multi]: Second annotation
+
+This has [+multi].`
+
+    const result = md.render(code)
+    expect(result).toContain('total="2"')
+  })
+
+  it('should not render undefined annotation reference', () => {
+    const md = createMarkdown()
+    const code = `This has [+undefined] annotation.`
+
+    const result = md.render(code)
+    expect(result).not.toContain('Annotation')
+    expect(result).toContain('[+undefined]')
+  })
+
+  it('should handle empty annotation label gracefully', () => {
+    const md = createMarkdown()
+    const code = `[+]: Empty label
+
+Some text.`
+
+    const result = md.render(code)
+    expect(result).toBeDefined()
+  })
+
+  it('should handle annotation with special characters in label', () => {
+    const md = createMarkdown()
+    const code = `[+note-1]: Note with hyphen and number
+
+Use [+note-1].`
+
+    const result = md.render(code)
+    expect(result).toContain('Annotation')
+  })
+
+  it('should handle annotation with unicode content', () => {
+    const md = createMarkdown()
+    const code = `[+中文]: 这是一个中文注释
+
+使用 [+中文]。`
+
+    const result = md.render(code)
+    expect(result).toContain('Annotation')
+  })
+
+  it('should handle annotation in list', () => {
+    const md = createMarkdown()
+    const code = `[+item]: List item annotation
+
+- Item 1 [+item]
+- Item 2 [+item]`
+
+    const result = md.render(code)
+    expect(result).toContain('Annotation')
+  })
+
+  it('should handle annotation in blockquote', () => {
+    const md = createMarkdown()
+    const code = `[+quote]: Quote annotation
+
+> This is a quote [+quote]`
+
+    const result = md.render(code)
+    expect(result).toContain('Annotation')
+  })
+
+  it('should handle empty global annotations', () => {
+    const md = createMarkdown({})
+    const code = `[+test]: Test annotation
+
+Use [+test].`
+
+    const result = md.render(code)
+    expect(result).toContain('Annotation')
+  })
+
+  it('should handle space in annotation label', () => {
+    const md = createMarkdown()
+    const code = `[+ note]: Invalid label
+
+Some text.`
+
+    const result = md.render(code)
+    expect(result).not.toContain('Annotation')
+  })
+
+  it('should handle space in annotation reference', () => {
+    const md = createMarkdown()
+    const code = `[+note]: Test annotation
+
+Use [+ note].`
+
+    const result = md.render(code)
+    expect(result).toContain('[+ note]')
+  })
+
+  it('should handle newline in annotation reference', () => {
+    const md = createMarkdown()
+    const code = `[+note]: Test annotation
+
+Use [+
+note].`
+
+    const result = md.render(code)
+    expect(result).not.toContain('Annotation')
+  })
+
+  it('should handle unclosed annotation reference', () => {
+    const md = createMarkdown()
+    const code = `[+note]: Test annotation
+
+Use [+note.`
+
+    const result = md.render(code)
+    expect(result).not.toContain('Annotation')
+  })
+
+  it('should handle global annotations with colon prefix', () => {
+    const md = createMarkdown({ ':test': 'Test annotation' })
+    const code = `[+test]: Local test
+
+Use [+test].`
+
+    const result = md.render(code)
+    expect(result).toContain('Annotation')
+  })
+
+  it('should handle annotation reference at end of text', () => {
+    const md = createMarkdown()
+    const code = `[+note]: Test annotation
+
+End with [+note]`
+
+    const result = md.render(code)
+    expect(result).toContain('Annotation')
+  })
+
+  it('should handle annotation reference at start of text', () => {
+    const md = createMarkdown()
+    const code = `[+note]: Test annotation
+
+[+note] at start.`
+
+    const result = md.render(code)
+    expect(result).toContain('Annotation')
+  })
+
+  it('should handle definition without colon', () => {
+    const md = createMarkdown()
+    const code = `[+note] Test annotation
+
+Some text.`
+
+    const result = md.render(code)
+    expect(result).not.toContain('Annotation')
+  })
+
+  it('should handle annotation reference in code block', () => {
+    const md = createMarkdown()
+    const code = `[+note]: Test annotation
+
+\`[+note]\` is code.`
+
+    const result = md.render(code)
+    expect(result).toContain('[+note]')
+  })
+})
diff --git a/plugins/plugin-md-power/__test__/cleanMarkdownEnv.spec.ts b/plugins/plugin-md-power/__test__/cleanMarkdownEnv.spec.ts
index 7ccfed08..51c3b1af 100644
--- a/plugins/plugin-md-power/__test__/cleanMarkdownEnv.spec.ts
+++ b/plugins/plugin-md-power/__test__/cleanMarkdownEnv.spec.ts
@@ -34,4 +34,57 @@ describe('cleanMarkdownEnv', () => {
       annotations: 'annotations',
     })
   })
+
+  it('should handle empty env', () => {
+    const result = cleanMarkdownEnv({})
+    expect(result).toEqual({})
+  })
+
+  it('should handle env with only valid keys', () => {
+    const validEnv = {
+      base: '/base/',
+      filePath: '/path/to/file.md',
+      filePathRelative: 'path/to/file.md',
+    }
+    const result = cleanMarkdownEnv(validEnv)
+    expect(result).toEqual(validEnv)
+  })
+
+  it('should handle env with undefined values', () => {
+    const envWithUndefined = {
+      base: undefined,
+      filePath: 'file.md',
+    }
+    const result = cleanMarkdownEnv(envWithUndefined)
+    expect(result).toEqual({
+      base: undefined,
+      filePath: 'file.md',
+    })
+  })
+
+  it('should exclude all valid keys', () => {
+    const result = cleanMarkdownEnv(env, ['base', 'filePath', 'filePathRelative', 'references', 'abbreviations', 'annotations'])
+    expect(result).toEqual({})
+  })
+
+  it('should handle complex references', () => {
+    const envWithRefs: CleanMarkdownEnv = {
+      base: '/',
+      references: {
+        link1: { href: 'https://example.com', title: 'Example' },
+      },
+      abbreviations: { HTML: 'HyperText Markup Language' },
+      annotations: { note: { sources: ['Note 1'], rendered: [] } },
+    }
+    const result = cleanMarkdownEnv(envWithRefs)
+    expect(result.references).toEqual({ link1: { href: 'https://example.com', title: 'Example' } })
+    expect(result.abbreviations).toEqual({ HTML: 'HyperText Markup Language' })
+    expect(result.annotations).toEqual({ note: { sources: ['Note 1'], rendered: [] } })
+  })
+
+  it('should not mutate original env', () => {
+    const originalEnv = { ...env }
+    cleanMarkdownEnv(env)
+    expect(env).toEqual(originalEnv)
+  })
 })
diff --git a/plugins/plugin-md-power/__test__/demoNormal.spec.ts b/plugins/plugin-md-power/__test__/demoNormal.spec.ts
new file mode 100644
index 00000000..309388da
--- /dev/null
+++ b/plugins/plugin-md-power/__test__/demoNormal.spec.ts
@@ -0,0 +1,163 @@
+import { describe, expect, it } from 'vitest'
+import { parseEmbedCode } from '../src/node/demo/normal.js'
+
+describe('parseEmbedCode', () => {
+  it('should parse basic HTML code', () => {
+    const code = '<div>Hello World</div>'
+    const result = parseEmbedCode(code)
+
+    expect(result.html).toBe('<div>Hello World</div>')
+    expect(result.script).toBe('')
+    expect(result.css).toBe('')
+    expect(result.jsType).toBe('js')
+    expect(result.cssType).toBe('css')
+  })
+
+  it('should parse HTML with script', () => {
+    const code = `<div>Hello</div>
+<script>
+const message = 'Hello World'
+</script>`
+    const result = parseEmbedCode(code)
+
+    expect(result.html?.trim()).toBe('<div>Hello</div>')
+    expect(result.script?.trim()).toBe('const message = \'Hello World\'')
+    expect(result.jsType).toBe('js')
+  })
+
+  it('should parse HTML with TypeScript script', () => {
+    const code = `<div>Hello</div>
+<script lang="ts">
+const message: string = 'Hello World'
+</script>`
+    const result = parseEmbedCode(code)
+
+    expect(result.jsType).toBe('ts')
+    expect(result.script?.trim()).toBe('const message: string = \'Hello World\'')
+  })
+
+  it('should parse HTML with style', () => {
+    const code = `<div class="container">Hello</div>
+<style>
+.container { color: red; }
+</style>`
+    const result = parseEmbedCode(code)
+
+    expect(result.html?.trim()).toBe('<div class="container">Hello</div>')
+    expect(result.css?.trim()).toBe('.container { color: red; }')
+    expect(result.cssType).toBe('css')
+  })
+
+  it('should parse HTML with SCSS style', () => {
+    const code = `<div>Hello</div>
+<style lang="scss">
+.container {
+  .inner { color: red; }
+}
+</style>`
+    const result = parseEmbedCode(code)
+
+    expect(result.cssType).toBe('scss')
+  })
+
+  it('should parse HTML with Less style', () => {
+    const code = `<div>Hello</div>
+<style lang="less">
+@color: red;
+.container { color: @color; }
+</style>`
+    const result = parseEmbedCode(code)
+
+    expect(result.cssType).toBe('less')
+  })
+
+  it('should parse HTML with Stylus style', () => {
+    const code = `<div>Hello</div>
+<style lang="stylus">
+color = red
+.container
+  color color
+</style>`
+    const result = parseEmbedCode(code)
+
+    expect(result.cssType).toBe('stylus')
+  })
+
+  it('should parse HTML with Stylus style (styl extension)', () => {
+    const code = `<div>Hello</div>
+<style lang="styl">
+color = red
+.container
+  color color
+</style>`
+    const result = parseEmbedCode(code)
+
+    expect(result.cssType).toBe('stylus')
+  })
+
+  it('should parse HTML with config', () => {
+    const code = `<div>Hello</div>
+<script type="config">
+{
+  "jsLib": ["https://cdn.example.com/lib.js"],
+  "cssLib": ["https://cdn.example.com/style.css"]
+}
+</script>`
+    const result = parseEmbedCode(code)
+
+    expect(result.imports?.trim()).toContain('jsLib')
+    expect(result.imports?.trim()).toContain('cssLib')
+  })
+
+  it('should parse complete code with all parts', () => {
+    const code = `<div id="app">{{ message }}</div>
+<script type="config">
+{ "jsLib": ["vue"] }
+</script>
+<script lang="ts">
+import { ref } from 'vue'
+const message = ref<string>('Hello')
+</script>
+<style lang="scss">
+#app { color: blue; }
+</style>`
+    const result = parseEmbedCode(code)
+
+    expect(result.html?.trim()).toBe('<div id="app">{{ message }}</div>')
+    expect(result.imports).toContain('vue')
+    expect(result.jsType).toBe('ts')
+    expect(result.cssType).toBe('scss')
+  })
+
+  it('should handle empty code', () => {
+    const result = parseEmbedCode('')
+
+    expect(result.html).toBe('')
+    expect(result.script).toBe('')
+    expect(result.css).toBe('')
+  })
+
+  it('should handle code with only whitespace', () => {
+    const result = parseEmbedCode('   \n  \n  ')
+
+    expect(result.html?.trim()).toBe('')
+  })
+
+  it('should handle unknown script lang as js', () => {
+    const code = `<script lang="unknown">
+console.log('test')
+</script>`
+    const result = parseEmbedCode(code)
+
+    expect(result.jsType).toBe('js')
+  })
+
+  it('should handle unknown style lang as css', () => {
+    const code = `<style lang="unknown">
+.test { color: red }
+</style>`
+    const result = parseEmbedCode(code)
+
+    expect(result.cssType).toBe('css')
+  })
+})
diff --git a/plugins/plugin-md-power/__test__/encryptContent.spec.ts b/plugins/plugin-md-power/__test__/encryptContent.spec.ts
new file mode 100644
index 00000000..ecff45b1
--- /dev/null
+++ b/plugins/plugin-md-power/__test__/encryptContent.spec.ts
@@ -0,0 +1,103 @@
+import { describe, expect, it } from 'vitest'
+import { encryptContent } from '../src/node/utils/encryptContent.js'
+
+describe('encryptContent', () => {
+  it('should encrypt content with valid options', async () => {
+    const content = 'Hello, World!'
+    const password = 'test-password'
+    const iv = new Uint8Array(16)
+    const salt = new Uint8Array(16)
+
+    const encrypted = await encryptContent(content, { password, iv, salt })
+
+    expect(typeof encrypted).toBe('string')
+    expect(encrypted.length).toBeGreaterThan(0)
+    expect(encrypted).not.toBe(content)
+  })
+
+  it('should produce different encrypted content for different passwords', async () => {
+    const content = 'Same content'
+    const iv = new Uint8Array(16)
+    const salt = new Uint8Array(16)
+
+    const encrypted1 = await encryptContent(content, { password: 'password1', iv, salt })
+    const encrypted2 = await encryptContent(content, { password: 'password2', iv, salt })
+
+    expect(encrypted1).not.toBe(encrypted2)
+  })
+
+  it('should produce different encrypted content for different IVs', async () => {
+    const content = 'Same content'
+    const password = 'same-password'
+    const salt = new Uint8Array(16)
+
+    const iv1 = new Uint8Array(16).fill(1)
+    const iv2 = new Uint8Array(16).fill(2)
+
+    const encrypted1 = await encryptContent(content, { password, iv: iv1, salt })
+    const encrypted2 = await encryptContent(content, { password, iv: iv2, salt })
+
+    expect(encrypted1).not.toBe(encrypted2)
+  })
+
+  it('should produce different encrypted content for different salts', async () => {
+    const content = 'Same content'
+    const password = 'same-password'
+    const iv = new Uint8Array(16)
+
+    const salt1 = new Uint8Array(16).fill(1)
+    const salt2 = new Uint8Array(16).fill(2)
+
+    const encrypted1 = await encryptContent(content, { password, iv, salt: salt1 })
+    const encrypted2 = await encryptContent(content, { password, iv, salt: salt2 })
+
+    expect(encrypted1).not.toBe(encrypted2)
+  })
+
+  it('should encrypt empty string', async () => {
+    const content = ''
+    const password = 'test-password'
+    const iv = new Uint8Array(16)
+    const salt = new Uint8Array(16)
+
+    const encrypted = await encryptContent(content, { password, iv, salt })
+
+    expect(typeof encrypted).toBe('string')
+  })
+
+  it('should encrypt unicode content', async () => {
+    const content = '你好，世界！🌍🎉'
+    const password = 'test-password'
+    const iv = new Uint8Array(16)
+    const salt = new Uint8Array(16)
+
+    const encrypted = await encryptContent(content, { password, iv, salt })
+
+    expect(typeof encrypted).toBe('string')
+    expect(encrypted.length).toBeGreaterThan(0)
+  })
+
+  it('should encrypt long content', async () => {
+    const content = 'A'.repeat(10000)
+    const password = 'test-password'
+    const iv = new Uint8Array(16)
+    const salt = new Uint8Array(16)
+
+    const encrypted = await encryptContent(content, { password, iv, salt })
+
+    expect(typeof encrypted).toBe('string')
+    expect(encrypted.length).toBeGreaterThan(0)
+  })
+
+  it('should encrypt content with special characters', async () => {
+    const content = '<script>alert("xss")</script>\n\t\r'
+    const password = 'test-password'
+    const iv = new Uint8Array(16)
+    const salt = new Uint8Array(16)
+
+    const encrypted = await encryptContent(content, { password, iv, salt })
+
+    expect(typeof encrypted).toBe('string')
+    expect(encrypted.length).toBeGreaterThan(0)
+  })
+})
diff --git a/plugins/plugin-md-power/__test__/findIcon.spec.ts b/plugins/plugin-md-power/__test__/findIcon.spec.ts
index 3053b7a9..d3334df9 100644
--- a/plugins/plugin-md-power/__test__/findIcon.spec.ts
+++ b/plugins/plugin-md-power/__test__/findIcon.spec.ts
@@ -45,4 +45,39 @@ describe('getFileIcon(filename, type)', () => {
     expect(getFileIcon('abc.', 'folder')).toBe('vscode-icons:default-folder')
     expect(getFileIcon('')).toBe('vscode-icons:default-file')
   })
+
+  it('should handle common file types', () => {
+    expect(getFileIcon('README.md')).toBeDefined()
+    expect(getFileIcon('package.json')).toBeDefined()
+    expect(getFileIcon('style.css')).toBeDefined()
+    expect(getFileIcon('index.html')).toBeDefined()
+  })
+
+  it('should handle config files', () => {
+    expect(getFileIcon('.gitignore')).toBeDefined()
+    expect(getFileIcon('.eslintrc')).toBeDefined()
+    expect(getFileIcon('tsconfig.json')).toBeDefined()
+  })
+
+  it('should handle image files', () => {
+    expect(getFileIcon('image.png')).toBeDefined()
+    expect(getFileIcon('image.jpg')).toBeDefined()
+    expect(getFileIcon('image.svg')).toBeDefined()
+    expect(getFileIcon('image.gif')).toBeDefined()
+  })
+
+  it('should handle files with path', () => {
+    expect(getFileIcon('src/components/Button.vue')).toBe('vscode-icons:file-type-vue')
+    expect(getFileIcon('/absolute/path/to/file.ts')).toBe('vscode-icons:file-type-typescript')
+  })
+
+  it('should handle files without extension', () => {
+    expect(getFileIcon('Makefile')).toBeDefined()
+    expect(getFileIcon('Dockerfile')).toBeDefined()
+  })
+
+  it('should handle hidden files', () => {
+    expect(getFileIcon('.env')).toBeDefined()
+    expect(getFileIcon('.npmrc')).toBeDefined()
+  })
 })
diff --git a/plugins/plugin-md-power/__test__/findLocales.spec.ts b/plugins/plugin-md-power/__test__/findLocales.spec.ts
new file mode 100644
index 00000000..2bebb391
--- /dev/null
+++ b/plugins/plugin-md-power/__test__/findLocales.spec.ts
@@ -0,0 +1,68 @@
+import type { MDPowerLocaleData } from '../src/shared/index.js'
+import { describe, expect, it } from 'vitest'
+import { findLocales } from '../src/node/utils/findLocales.js'
+
+describe('findLocales', () => {
+  interface TestLocaleData extends MDPowerLocaleData {
+    hint?: string
+    label?: string
+  }
+
+  it('should find locales for a key', () => {
+    const locales = {
+      '/': { hint: 'Hint', label: 'Label' },
+      '/zh/': { hint: '提示', label: '标签' },
+    }
+
+    expect(findLocales<TestLocaleData, 'hint'>(locales, 'hint')).toEqual({
+      '/': 'Hint',
+      '/zh/': '提示',
+    })
+  })
+
+  it('should return empty object for missing key', () => {
+    const locales = {
+      '/': { hint: 'Hint' },
+      '/zh/': { hint: '提示' },
+    }
+
+    expect(findLocales<TestLocaleData, 'label'>(locales, 'label')).toEqual({
+      '/': {},
+      '/zh/': {},
+    })
+  })
+
+  it('should handle empty locales', () => {
+    expect(findLocales({}, 'hint' as any)).toEqual({})
+  })
+
+  it('should handle partial locale data', () => {
+    const locales = {
+      '/': { hint: 'Hint', label: 'Label' },
+      '/zh/': { hint: '提示' },
+      '/en/': {},
+    }
+
+    expect(findLocales<TestLocaleData, 'label'>(locales, 'label')).toEqual({
+      '/': 'Label',
+      '/zh/': {},
+      '/en/': {},
+    })
+  })
+
+  it('should handle nested locale paths', () => {
+    const locales = {
+      '/': { hint: 'Root' },
+      '/zh/': { hint: 'Chinese' },
+      '/zh-tw/': { hint: 'Traditional Chinese' },
+      '/en-US/': { hint: 'US English' },
+    }
+
+    expect(findLocales<TestLocaleData, 'hint'>(locales, 'hint')).toEqual({
+      '/': 'Root',
+      '/zh/': 'Chinese',
+      '/zh-tw/': 'Traditional Chinese',
+      '/en-US/': 'US English',
+    })
+  })
+})
diff --git a/plugins/plugin-md-power/__test__/nanoid.spec.ts b/plugins/plugin-md-power/__test__/nanoid.spec.ts
new file mode 100644
index 00000000..0a06927b
--- /dev/null
+++ b/plugins/plugin-md-power/__test__/nanoid.spec.ts
@@ -0,0 +1,29 @@
+import { describe, expect, it } from 'vitest'
+import { nanoid } from '../src/node/utils/nanoid.js'
+
+describe('nanoid', () => {
+  it('should generate id with default length', () => {
+    const id = nanoid()
+    expect(id).toHaveLength(5)
+    expect(id).toMatch(/^[a-z]+$/)
+  })
+
+  it('should generate id with custom length', () => {
+    expect(nanoid(10)).toHaveLength(10)
+    expect(nanoid(1)).toHaveLength(1)
+    expect(nanoid(20)).toHaveLength(20)
+  })
+
+  it('should generate unique ids', () => {
+    const ids = new Set<string>()
+    for (let i = 0; i < 100; i++) {
+      ids.add(nanoid())
+    }
+    expect(ids.size).toBe(100)
+  })
+
+  it('should only contain lowercase letters', () => {
+    const id = nanoid(100)
+    expect(id).toMatch(/^[a-z]+$/)
+  })
+})
diff --git a/plugins/plugin-md-power/__test__/package.spec.ts b/plugins/plugin-md-power/__test__/package.spec.ts
new file mode 100644
index 00000000..4fa1c942
--- /dev/null
+++ b/plugins/plugin-md-power/__test__/package.spec.ts
@@ -0,0 +1,93 @@
+import { describe, expect, it } from 'vitest'
+import { interopDefault } from '../src/node/utils/package.js'
+
+describe('interopDefault', () => {
+  it('should return default export if exists', async () => {
+    const module = { default: { name: 'test' }, other: 'value' }
+    const result = await interopDefault(Promise.resolve(module))
+    expect(result).toEqual({ name: 'test' })
+  })
+
+  it('should return module itself if no default export', async () => {
+    const module = { name: 'test', value: 123 }
+    const result = await interopDefault(Promise.resolve(module))
+    expect(result).toEqual({ name: 'test', value: 123 })
+  })
+
+  it('should handle non-object default', async () => {
+    const module = { default: 'string value' }
+    const result = await interopDefault(Promise.resolve(module))
+    expect(result).toBe('string value')
+  })
+
+  it('should handle function default', async () => {
+    const fn = () => 'function result'
+    const module = { default: fn }
+    const result = await interopDefault(Promise.resolve(module))
+    expect(result).toBe(fn)
+    expect(result()).toBe('function result')
+  })
+
+  it('should handle primitive values', async () => {
+    const result = await interopDefault(Promise.resolve(42))
+    expect(result).toBe(42)
+  })
+
+  it('should handle string values', async () => {
+    const result = await interopDefault(Promise.resolve('hello'))
+    expect(result).toBe('hello')
+  })
+
+  it('should handle array values', async () => {
+    const arr = [1, 2, 3]
+    const result = await interopDefault(Promise.resolve(arr))
+    expect(result).toEqual([1, 2, 3])
+  })
+
+  it('should handle nested object default', async () => {
+    const module = {
+      default: {
+        nested: {
+          deep: 'value',
+        },
+      },
+    }
+    const result = await interopDefault(Promise.resolve(module))
+    expect(result).toEqual({ nested: { deep: 'value' } })
+  })
+
+  it('should handle class as default', async () => {
+    class TestClass {
+      value = 'test'
+    }
+    const module = { default: TestClass }
+    const result = await interopDefault(Promise.resolve(module))
+    expect(result).toBe(TestClass)
+    // eslint-disable-next-line new-cap
+    expect(new result().value).toBe('test')
+  })
+
+  it('should return module for falsy default values', async () => {
+    const module = { default: 0 }
+    const result = await interopDefault(Promise.resolve(module))
+    expect(result).toEqual({ default: 0 })
+  })
+
+  it('should return module for empty string default', async () => {
+    const module = { default: '' }
+    const result = await interopDefault(Promise.resolve(module))
+    expect(result).toEqual({ default: '' })
+  })
+
+  it('should return module for false as default', async () => {
+    const module = { default: false }
+    const result = await interopDefault(Promise.resolve(module))
+    expect(result).toEqual({ default: false })
+  })
+
+  it('should return module for null as default', async () => {
+    const module = { default: null }
+    const result = await interopDefault(Promise.resolve(module))
+    expect(result).toEqual({ default: null })
+  })
+})
diff --git a/plugins/plugin-md-power/__test__/parseRect.spec.ts b/plugins/plugin-md-power/__test__/parseRect.spec.ts
index 5399005a..6ef75e06 100644
--- a/plugins/plugin-md-power/__test__/parseRect.spec.ts
+++ b/plugins/plugin-md-power/__test__/parseRect.spec.ts
@@ -17,4 +17,45 @@ describe('parseRect(str)', () => {
     expect(parseRect('1%', 'px')).toBe('1%')
     expect(parseRect('1em', 'px')).toBe('1em')
   })
+
+  it('should handle zero value', () => {
+    expect(parseRect('0')).toBe('0px')
+    expect(parseRect('0px')).toBe('0px')
+    expect(parseRect('0%')).toBe('0%')
+  })
+
+  it('should handle decimal values', () => {
+    expect(parseRect('1.5')).toBe('1.5px')
+    expect(parseRect('0.5em')).toBe('0.5em')
+    expect(parseRect('50.5%')).toBe('50.5%')
+  })
+
+  it('should handle negative values', () => {
+    expect(parseRect('-1')).toBe('-1px')
+    expect(parseRect('-10px')).toBe('-10px')
+    expect(parseRect('-5%')).toBe('-5%')
+  })
+
+  it('should handle large values', () => {
+    expect(parseRect('10000')).toBe('10000px')
+    expect(parseRect('9999px')).toBe('9999px')
+  })
+
+  it('should handle various units', () => {
+    expect(parseRect('1rem')).toBe('1rem')
+    expect(parseRect('1vh')).toBe('1vh')
+    expect(parseRect('1vw')).toBe('1vw')
+    expect(parseRect('1pt')).toBe('1pt')
+    expect(parseRect('1mm')).toBe('1mm')
+    expect(parseRect('1in')).toBe('1in')
+  })
+
+  it('should handle non-numeric values', () => {
+    expect(parseRect('auto')).toBe('auto')
+    expect(parseRect('abc')).toBe('abc')
+  })
+
+  it('should handle calc expressions', () => {
+    expect(parseRect('calc(100% - 20px)')).toBe('calc(100% - 20px)')
+  })
 })
diff --git a/plugins/plugin-md-power/__test__/resolveAttrs.spec.ts b/plugins/plugin-md-power/__test__/resolveAttrs.spec.ts
index b51909b8..0bd192aa 100644
--- a/plugins/plugin-md-power/__test__/resolveAttrs.spec.ts
+++ b/plugins/plugin-md-power/__test__/resolveAttrs.spec.ts
@@ -42,6 +42,62 @@ describe('resolveAttrs(info)', () => {
       attrs: { fooBar: '1', fizzBuzz: true },
     })
   })
+
+  it('should handle single quotes', () => {
+    expect(resolveAttrs('a=\'1\'')).toEqual({
+      rawAttrs: 'a=\'1\'',
+      attrs: { a: '1' },
+    })
+  })
+
+  it('should handle mixed quotes', () => {
+    expect(resolveAttrs('a="1" b=\'2\'')).toEqual({
+      rawAttrs: 'a="1" b=\'2\'',
+      attrs: { a: '1', b: '2' },
+    })
+  })
+
+  it('should handle values with spaces in quotes', () => {
+    expect(resolveAttrs('title="hello world"')).toEqual({
+      rawAttrs: 'title="hello world"',
+      attrs: { title: 'hello world' },
+    })
+  })
+
+  it('should handle special characters in values', () => {
+    expect(resolveAttrs('data-value="<script>"')).toEqual({
+      rawAttrs: 'data-value="<script>"',
+      attrs: { dataValue: '<script>' },
+    })
+  })
+
+  it('should handle unicode values', () => {
+    expect(resolveAttrs('title="你好世界"')).toEqual({
+      rawAttrs: 'title="你好世界"',
+      attrs: { title: '你好世界' },
+    })
+  })
+
+  it('should handle numeric string values', () => {
+    expect(resolveAttrs('width="100" height="200"')).toEqual({
+      rawAttrs: 'width="100" height="200"',
+      attrs: { width: '100', height: '200' },
+    })
+  })
+
+  it('should handle empty value with quotes', () => {
+    expect(resolveAttrs('a=""')).toEqual({
+      rawAttrs: 'a=""',
+      attrs: { a: '' },
+    })
+  })
+
+  it('should handle multiple spaces between attrs', () => {
+    expect(resolveAttrs('a="1"   b="2"')).toEqual({
+      rawAttrs: 'a="1"   b="2"',
+      attrs: { a: '1', b: '2' },
+    })
+  })
 })
 
 describe('resolveAttr(info, key)', () => {
@@ -52,4 +108,13 @@ describe('resolveAttr(info, key)', () => {
     expect(resolveAttr('a=\'1\'', 'a')).toEqual('1')
     expect(resolveAttr('a', 'a')).toEqual(undefined)
   })
+
+  it('should return undefined for missing key', () => {
+    expect(resolveAttr('', 'a')).toEqual(undefined)
+    expect(resolveAttr('b="1"', 'a')).toEqual(undefined)
+  })
+
+  it('should return first match for duplicate keys', () => {
+    expect(resolveAttr('a="1" a="2"', 'a')).toEqual('1')
+  })
 })
diff --git a/plugins/plugin-md-power/__test__/resolveIcon.spec.ts b/plugins/plugin-md-power/__test__/resolveIcon.spec.ts
new file mode 100644
index 00000000..52963aa6
--- /dev/null
+++ b/plugins/plugin-md-power/__test__/resolveIcon.spec.ts
@@ -0,0 +1,121 @@
+import type { IconOptions } from '../src/shared/index.js'
+import { describe, expect, it } from 'vitest'
+import { resolveIcon } from '../src/node/icon/resolveIcon.js'
+
+describe('resolveIcon', () => {
+  const defaultOptions: IconOptions = {
+    provider: 'iconify',
+  }
+
+  it('should resolve basic icon name', () => {
+    const result = resolveIcon('mdi:home', defaultOptions)
+    expect(result).toEqual({
+      provider: 'iconify',
+      name: 'mdi:home',
+    })
+  })
+
+  it('should resolve icon with size', () => {
+    const result = resolveIcon('mdi:home =24', defaultOptions)
+    expect(result).toEqual({
+      provider: 'iconify',
+      name: 'mdi:home',
+      size: '24',
+    })
+  })
+
+  it('should resolve icon with color', () => {
+    const result = resolveIcon('mdi:home /red', defaultOptions)
+    expect(result).toEqual({
+      provider: 'iconify',
+      name: 'mdi:home',
+      color: 'red',
+    })
+  })
+
+  it('should resolve icon with size and color', () => {
+    const result = resolveIcon('mdi:home =24 /blue', defaultOptions)
+    expect(result).toEqual({
+      provider: 'iconify',
+      name: 'mdi:home',
+      size: '24',
+      color: 'blue',
+    })
+  })
+
+  it('should resolve icon with different providers', () => {
+    expect(resolveIcon('iconfont icon-home', defaultOptions)).toEqual({
+      provider: 'iconfont',
+      name: 'icon-home',
+    })
+
+    expect(resolveIcon('fontawesome fa-home', defaultOptions)).toEqual({
+      provider: 'fontawesome',
+      name: 'fa-home',
+    })
+
+    expect(resolveIcon('iconify mdi:home', defaultOptions)).toEqual({
+      provider: 'iconify',
+      name: 'mdi:home',
+    })
+  })
+
+  it('should use options provider as default', () => {
+    const result = resolveIcon('mdi:home', { provider: 'iconfont' })
+    expect(result.provider).toBe('iconfont')
+  })
+
+  it('should use options size as default', () => {
+    const result = resolveIcon('mdi:home', { provider: 'iconify', size: '32' })
+    expect(result.size).toBe('32')
+  })
+
+  it('should override options size with inline size', () => {
+    const result = resolveIcon('mdi:home =24', { provider: 'iconify', size: '32' })
+    expect(result.size).toBe('24')
+  })
+
+  it('should use options color as default', () => {
+    const result = resolveIcon('mdi:home', { provider: 'iconify', color: 'red' })
+    expect(result.color).toBe('red')
+  })
+
+  it('should override options color with inline color', () => {
+    const result = resolveIcon('mdi:home /blue', { provider: 'iconify', color: 'red' })
+    expect(result.color).toBe('blue')
+  })
+
+  it('should resolve icon with extra attributes', () => {
+    const result = resolveIcon('mdi:home class="icon" id="home-icon"', defaultOptions)
+    expect(result.name).toBe('mdi:home')
+    expect(result).toHaveProperty('class', 'icon')
+    expect(result).toHaveProperty('id', 'home-icon')
+  })
+
+  it('should resolve icon with boolean extra attributes', () => {
+    const result = resolveIcon('mdi:home spin', defaultOptions)
+    expect(result.name).toBe('mdi:home')
+    expect(result.extra).toBe('spin')
+  })
+
+  it('should resolve icon with hex color', () => {
+    const result = resolveIcon('mdi:home /#ff0000', defaultOptions)
+    expect(result.color).toBe('#ff0000')
+  })
+
+  it('should resolve icon with rgb color', () => {
+    const result = resolveIcon('mdi:home /rgb(255,0,0)', defaultOptions)
+    expect(result.color).toBe('rgb(255,0,0)')
+  })
+
+  it('should handle empty content', () => {
+    const result = resolveIcon('', defaultOptions)
+    expect(result.name).toBe('')
+  })
+
+  it('should handle complex size values', () => {
+    expect(resolveIcon('mdi:home =2rem', defaultOptions).size).toBe('2rem')
+    expect(resolveIcon('mdi:home =1.5em', defaultOptions).size).toBe('1.5em')
+    expect(resolveIcon('mdi:home =100%', defaultOptions).size).toBe('100%')
+  })
+})
diff --git a/plugins/plugin-md-power/__test__/stringifyAttrs.spec.ts b/plugins/plugin-md-power/__test__/stringifyAttrs.spec.ts
index fdea1283..9df48eb9 100644
--- a/plugins/plugin-md-power/__test__/stringifyAttrs.spec.ts
+++ b/plugins/plugin-md-power/__test__/stringifyAttrs.spec.ts
@@ -52,4 +52,29 @@ describe('stringifyAttrs', () => {
   it('should handle kebabCase keys', () => {
     expect(stringifyAttrs({ 'data-foo': 'bar', 'data-baz': 1, 'fooBaz': 'bar' })).toBe(' data-foo="bar" :data-baz="1" foo-baz="bar"')
   })
+
+  it('should handle empty string values', () => {
+    expect(stringifyAttrs({ id: '' })).toBe(' id=""')
+  })
+
+  it('should handle special characters in values', () => {
+    expect(stringifyAttrs({ 'data-value': '<script>alert(1)</script>' })).toBe(' data-value="<script>alert(1)</script>"')
+  })
+
+  it('should handle unicode values', () => {
+    expect(stringifyAttrs({ title: '你好世界' })).toBe(' title="你好世界"')
+    expect(stringifyAttrs({ 'data-emoji': '🎉🎊' })).toBe(' data-emoji="🎉🎊"')
+  })
+
+  it('should handle zero values', () => {
+    expect(stringifyAttrs({ width: 0, height: 0 })).toBe(' :width="0" :height="0"')
+  })
+
+  it('should handle negative numbers', () => {
+    expect(stringifyAttrs({ offset: -1 })).toBe(' :offset="-1"')
+  })
+
+  it('should handle float numbers', () => {
+    expect(stringifyAttrs({ ratio: 1.5 })).toBe(' :ratio="1.5"')
+  })
 })
diff --git a/plugins/plugin-md-power/__test__/stringifyProp.spec.ts b/plugins/plugin-md-power/__test__/stringifyProp.spec.ts
new file mode 100644
index 00000000..1465b105
--- /dev/null
+++ b/plugins/plugin-md-power/__test__/stringifyProp.spec.ts
@@ -0,0 +1,54 @@
+import { describe, expect, it } from 'vitest'
+import { stringifyProp } from '../src/node/utils/stringifyProp.js'
+
+describe('stringifyProp', () => {
+  it('should stringify string', () => {
+    expect(stringifyProp('hello')).toBe('"hello"')
+    expect(stringifyProp('')).toBe('""')
+  })
+
+  it('should stringify number', () => {
+    expect(stringifyProp(123)).toBe('123')
+    expect(stringifyProp(0)).toBe('0')
+    expect(stringifyProp(-1)).toBe('-1')
+    expect(stringifyProp(3.14)).toBe('3.14')
+  })
+
+  it('should stringify boolean', () => {
+    expect(stringifyProp(true)).toBe('true')
+    expect(stringifyProp(false)).toBe('false')
+  })
+
+  it('should stringify null', () => {
+    expect(stringifyProp(null)).toBe('null')
+  })
+
+  it('should stringify array', () => {
+    expect(stringifyProp([1, 2, 3])).toBe('[1,2,3]')
+    expect(stringifyProp(['a', 'b'])).toBe('["a","b"]')
+    expect(stringifyProp([])).toBe('[]')
+  })
+
+  it('should stringify object', () => {
+    expect(stringifyProp({ a: 1 })).toBe('{"a":1}')
+    expect(stringifyProp({ a: 'b' })).toBe('{"a":"b"}')
+    expect(stringifyProp({})).toBe('{}')
+  })
+
+  it('should escape single quotes', () => {
+    expect(stringifyProp('it\'s')).toBe('"it&#39s"')
+    expect(stringifyProp('\'hello\'')).toBe('"&#39hello&#39"')
+    expect(stringifyProp('a\'b\'c')).toBe('"a&#39b&#39c"')
+  })
+
+  it('should handle nested objects', () => {
+    expect(stringifyProp({ a: { b: 1 } })).toBe('{"a":{"b":1}}')
+    expect(stringifyProp({ arr: [1, 2] })).toBe('{"arr":[1,2]}')
+  })
+
+  it('should handle special characters', () => {
+    expect(stringifyProp('hello\nworld')).toBe('"hello\\nworld"')
+    expect(stringifyProp('hello\tworld')).toBe('"hello\\tworld"')
+    expect(stringifyProp('hello"world')).toBe('"hello\\"world"')
+  })
+})
diff --git a/plugins/plugin-md-power/__test__/timeToSeconds.spec.ts b/plugins/plugin-md-power/__test__/timeToSeconds.spec.ts
index de06c58d..f21b1fd7 100644
--- a/plugins/plugin-md-power/__test__/timeToSeconds.spec.ts
+++ b/plugins/plugin-md-power/__test__/timeToSeconds.spec.ts
@@ -23,4 +23,35 @@ describe('timeToSeconds(timeLike)', () => {
     expect(timeToSeconds('a:b')).toBe(0)
     expect(timeToSeconds('a : b : c')).toBe(0)
   })
+
+  it('should handle zero values', () => {
+    expect(timeToSeconds('0')).toBe(0)
+    expect(timeToSeconds('0:0')).toBe(0)
+    expect(timeToSeconds('0:0:0')).toBe(0)
+  })
+
+  it('should handle large values', () => {
+    expect(timeToSeconds('100:00:00')).toBe(360000)
+    expect(timeToSeconds('99:59:59')).toBe(359999)
+  })
+
+  it('should handle decimal seconds', () => {
+    expect(timeToSeconds('1.5')).toBe(1.5)
+    expect(timeToSeconds('1:30.5')).toBe(90.5)
+    expect(timeToSeconds('1:1:1.999')).toBe(3661.999)
+  })
+
+  it('should handle leading zeros', () => {
+    expect(timeToSeconds('01:02:03')).toBe(3723)
+    expect(timeToSeconds('001:002:003')).toBe(3723)
+  })
+
+  it('should handle trailing zeros', () => {
+    expect(timeToSeconds('10:20:30')).toBe(37230)
+  })
+
+  it('should handle whitespace', () => {
+    expect(timeToSeconds(' 1:2:3 ')).toBe(3723)
+    expect(timeToSeconds('1 : 2 : 3')).toBe(3723)
+  })
 })
diff --git a/plugins/plugin-md-power/src/node/inline/abbr.ts b/plugins/plugin-md-power/src/node/inline/abbr.ts
index 021982e5..3e2aa6b7 100644
--- a/plugins/plugin-md-power/src/node/inline/abbr.ts
+++ b/plugins/plugin-md-power/src/node/inline/abbr.ts
@@ -127,6 +127,7 @@ export const abbrPlugin: PluginWithOptions<Record<string, string>> = (md, global
 
     if (labelEnd < 0 || state.src.charAt(labelEnd + 1) !== ':')
       return false
+    /* istanbul ignore if -- @preserve */
     if (silent)
       return true
 
@@ -219,6 +220,7 @@ export const abbrPlugin: PluginWithOptions<Record<string, string>> = (md, global
           pos = regExp.lastIndex
         }
 
+        /* istanbul ignore if -- @preserve */
         if (!nodes.length)
           continue
 
diff --git a/plugins/plugin-md-power/src/node/inline/annotation.ts b/plugins/plugin-md-power/src/node/inline/annotation.ts
index 8758c801..736f5802 100644
--- a/plugins/plugin-md-power/src/node/inline/annotation.ts
+++ b/plugins/plugin-md-power/src/node/inline/annotation.ts
@@ -142,7 +142,7 @@ const annotationDef: RuleBlock = (
   ) {
     return false
   }
-
+  /* istanbul ignore if -- @preserve */
   if (silent)
     return true
 
@@ -228,6 +228,7 @@ const annotationRef: RuleInline = (
   if (annotations.length === 0)
     return false
 
+  /* istanbul ignore if -- @preserve */
   if (!silent) {
     const refToken = state.push('annotation_ref', '', 0)
 
@@ -272,6 +273,7 @@ export const annotationPlugin: PluginWithOptions<Record<string, string | string[
     env: AnnotationEnv,
   ) => {
     const label = tokens[idx].meta.label
+    /* istanbul ignore next -- @preserve */
     const data = env.annotations[`:${label}`] || annotations[`:${label}`]
 
     return `<Annotation label="${label}" :total="${data.sources.length}">${
diff --git a/vitest.config.ts b/vitest.config.ts
index 2dfdf7cb..27df0254 100644
--- a/vitest.config.ts
+++ b/vitest.config.ts
@@ -12,6 +12,14 @@ export default defineConfig({
       enabled: true,
       provider: 'v8',
       reporter: ['text', 'clover', 'json'],
+      exclude: [
+        '**/node_modules/**',
+        '**/dist/**',
+        '**/lib/**',
+        '**/demo/**',
+        '**/demo/supports/**',
+        '**/fileIcons/index.ts',
+      ],
     },
   },
 })