mirror of
https://github.com/headroomlabs-ai/headroom.git
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9ff67fbd1b
Add pytest.importorskip("trafilatura") to HTML extractor test modules
to skip tests gracefully when the optional trafilatura dependency is
not installed. This fixes CI failures in the base test matrix that
doesn't include the html extras.
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
595 lines
20 KiB
Python
595 lines
20 KiB
Python
"""Tests for HTMLExtractor.
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These are real tests using actual HTML content - no mocks.
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Tests verify that trafilatura correctly extracts main content
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and removes structural noise.
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"""
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import pytest
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# Skip entire module if trafilatura not installed
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pytest.importorskip("trafilatura")
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from headroom.transforms.html_extractor import (
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HTMLExtractionResult,
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HTMLExtractor,
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HTMLExtractorConfig,
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is_html_content,
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)
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class TestIsHtmlContent:
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"""Tests for the is_html_content detection function."""
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def test_detects_doctype_html(self):
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"""Detects HTML with DOCTYPE declaration."""
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html = "<!DOCTYPE html><html><body>Content</body></html>"
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assert is_html_content(html) is True
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def test_detects_html_tag(self):
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"""Detects HTML with html tag."""
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html = "<html><head></head><body>Content</body></html>"
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assert is_html_content(html) is True
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def test_detects_structural_tags(self):
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"""Detects HTML with multiple structural tags (needs doctype or html tag)."""
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# Note: is_html_content requires DOCTYPE or <html> tag, or 3+ structural tags
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# Just structural tags alone may not trigger detection
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html = "<html><div><nav>Menu</nav><article>Content</article><footer>Footer</footer></div></html>"
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assert is_html_content(html) is True
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def test_rejects_plain_text(self):
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"""Rejects plain text."""
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text = "This is just plain text with no HTML."
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assert is_html_content(text) is False
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def test_rejects_json(self):
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"""Rejects JSON content."""
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json_content = '{"name": "test", "value": 123}'
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assert is_html_content(json_content) is False
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def test_rejects_markdown(self):
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"""Rejects markdown content."""
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markdown = "# Heading\n\nParagraph with **bold** text."
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assert is_html_content(markdown) is False
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def test_rejects_code(self):
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"""Rejects source code."""
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code = "def hello():\n print('world')"
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assert is_html_content(code) is False
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def test_rejects_empty(self):
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"""Rejects empty content."""
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assert is_html_content("") is False
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assert is_html_content(None) is False # type: ignore
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def test_case_insensitive(self):
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"""Detection is case insensitive."""
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html = "<!DOCTYPE HTML><HTML><BODY>Content</BODY></HTML>"
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assert is_html_content(html) is True
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class TestHTMLExtractor:
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"""Tests for HTMLExtractor content extraction."""
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@pytest.fixture
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def extractor(self):
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"""Create a default HTMLExtractor."""
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return HTMLExtractor()
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def test_extracts_article_content(self, extractor):
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"""Extracts main article content."""
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html = """<!DOCTYPE html>
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<html>
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<head><title>Test Article</title></head>
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<body>
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<nav><a href="/">Home</a></nav>
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<article>
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<h1>Article Title</h1>
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<p>This is the main content of the article.</p>
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<p>It contains important information for the reader.</p>
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</article>
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<footer>Copyright 2024</footer>
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</body>
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</html>"""
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result = extractor.extract(html)
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assert "Article Title" in result.extracted
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assert "main content" in result.extracted
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assert "important information" in result.extracted
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# Navigation and footer should be removed
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assert "Home" not in result.extracted or "Copyright" not in result.extracted
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def test_removes_script_tags(self, extractor):
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"""Removes JavaScript content."""
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html = """<!DOCTYPE html>
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<html>
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<head>
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<script>
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function malicious() {
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alert('This should not appear');
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console.log('Script content');
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}
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</script>
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</head>
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<body>
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<article>
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<p>Actual content that matters.</p>
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</article>
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<script>anotherScript();</script>
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</body>
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</html>"""
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result = extractor.extract(html)
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assert "malicious" not in result.extracted
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assert "alert" not in result.extracted
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assert "anotherScript" not in result.extracted
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assert "Actual content" in result.extracted
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def test_removes_style_tags(self, extractor):
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"""Removes CSS content."""
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html = """<!DOCTYPE html>
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<html>
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<head>
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<style>
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body { color: red; }
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.hidden { display: none; }
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</style>
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</head>
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<body>
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<article>
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<p>Real content here.</p>
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</article>
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</body>
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</html>"""
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result = extractor.extract(html)
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assert "color: red" not in result.extracted
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assert "display: none" not in result.extracted
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assert "Real content" in result.extracted
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def test_compression_ratio(self, extractor):
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"""Verifies significant compression ratio."""
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html = """<!DOCTYPE html>
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<html>
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<head>
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<title>Page Title</title>
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<meta charset="utf-8">
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<meta name="viewport" content="width=device-width">
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<script src="analytics.js"></script>
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<script>
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var config = {tracking: true, debug: false};
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function init() { console.log('initialized'); }
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</script>
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<style>
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* { margin: 0; padding: 0; }
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body { font-family: Arial; }
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nav { background: #333; }
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footer { background: #666; }
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</style>
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</head>
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<body>
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<header>
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<nav>
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<a href="/">Home</a>
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<a href="/about">About</a>
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<a href="/contact">Contact</a>
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</nav>
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</header>
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<main>
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<article>
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<h1>Main Article Heading</h1>
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<p>This is the first paragraph of actual content.</p>
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<p>This is the second paragraph with more details.</p>
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</article>
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</main>
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<aside>
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<h3>Related Links</h3>
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<ul>
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<li><a href="/link1">Link 1</a></li>
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<li><a href="/link2">Link 2</a></li>
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</ul>
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</aside>
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<footer>
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<p>Copyright 2024</p>
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<p>Privacy Policy | Terms of Service</p>
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</footer>
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</body>
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</html>"""
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result = extractor.extract(html)
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# Should achieve significant reduction
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assert result.compression_ratio < 0.5 # At least 50% reduction
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assert result.reduction_percent > 50
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# Main content should be preserved
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assert "Main Article Heading" in result.extracted
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assert "first paragraph" in result.extracted
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def test_extracts_metadata(self, extractor):
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"""Extracts page metadata."""
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html = """<!DOCTYPE html>
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<html>
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<head>
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<title>Page Title for Testing</title>
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<meta name="author" content="John Doe">
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<meta name="description" content="A test page description">
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</head>
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<body>
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<article>
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<h1>Page Title for Testing</h1>
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<p>Content here.</p>
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</article>
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</body>
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</html>"""
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result = extractor.extract(html)
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assert result.title == "Page Title for Testing"
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assert result.metadata.get("title") == "Page Title for Testing"
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def test_handles_empty_html(self, extractor):
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"""Handles empty HTML gracefully."""
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result = extractor.extract("")
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assert result.extracted == ""
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assert result.original_length == 0
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assert result.extracted_length == 0
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def test_handles_whitespace_only(self, extractor):
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"""Handles whitespace-only input."""
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result = extractor.extract(" \n\t ")
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assert result.extracted == ""
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assert result.compression_ratio == 0.0
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def test_handles_minimal_html(self, extractor):
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"""Handles minimal HTML structure."""
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html = "<p>Just a paragraph.</p>"
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result = extractor.extract(html)
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# trafilatura may or may not extract minimal content
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# Just verify it doesn't crash
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assert isinstance(result.extracted, str)
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assert result.original_length > 0
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def test_preserves_paragraphs(self, extractor):
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"""Preserves paragraph structure."""
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html = """<!DOCTYPE html>
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<html>
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<body>
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<article>
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<p>First paragraph.</p>
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<p>Second paragraph.</p>
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<p>Third paragraph.</p>
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</article>
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</body>
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</html>"""
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result = extractor.extract(html)
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assert "First paragraph" in result.extracted
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assert "Second paragraph" in result.extracted
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assert "Third paragraph" in result.extracted
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class TestHTMLExtractorConfig:
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"""Tests for HTMLExtractor configuration options."""
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def test_markdown_output_format(self):
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"""Tests markdown output format."""
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config = HTMLExtractorConfig(output_format="markdown")
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extractor = HTMLExtractor(config)
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html = """<!DOCTYPE html>
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<html>
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<body>
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<article>
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<h1>Heading</h1>
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<p>Paragraph text.</p>
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</article>
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</body>
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</html>"""
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result = extractor.extract(html)
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# Markdown format should include # for heading
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assert "Heading" in result.extracted
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def test_text_output_format(self):
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"""Tests plain text output format."""
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config = HTMLExtractorConfig(output_format="txt")
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extractor = HTMLExtractor(config)
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html = """<!DOCTYPE html>
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<html>
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<body>
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<article>
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<h1>Heading</h1>
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<p>Paragraph text.</p>
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</article>
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</body>
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</html>"""
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result = extractor.extract(html)
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assert "Heading" in result.extracted
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assert "Paragraph" in result.extracted
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def test_disable_metadata_extraction(self):
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"""Tests disabling metadata extraction."""
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config = HTMLExtractorConfig(extract_metadata=False)
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extractor = HTMLExtractor(config)
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html = """<!DOCTYPE html>
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<html>
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<head><title>Test Title</title></head>
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<body><article><p>Content.</p></article></body>
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</html>"""
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result = extractor.extract(html)
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# Metadata should be empty when disabled
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assert result.title is None
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assert result.metadata == {}
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class TestHTMLExtractionResult:
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"""Tests for HTMLExtractionResult dataclass."""
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def test_reduction_percent_calculation(self):
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"""Tests reduction percent calculation."""
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result = HTMLExtractionResult(
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extracted="short",
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original="much longer content here",
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original_length=100,
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extracted_length=25,
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compression_ratio=0.25,
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)
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assert result.reduction_percent == 75.0
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def test_reduction_percent_with_zero_original(self):
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"""Tests reduction percent with zero original length."""
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result = HTMLExtractionResult(
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extracted="",
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original="",
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original_length=0,
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extracted_length=0,
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compression_ratio=0.0,
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)
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assert result.reduction_percent == 0.0
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class TestRealWorldHTML:
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"""Tests with realistic HTML content."""
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@pytest.fixture
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def extractor(self):
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return HTMLExtractor()
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def test_news_article_structure(self, extractor):
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"""Tests extraction from news-article-like structure."""
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html = """<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<title>Breaking News: Important Event Happens</title>
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<script>window.analytics = {};</script>
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<style>.ad { display: block; }</style>
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</head>
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<body>
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<header>
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<nav class="main-nav">
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<a href="/">Home</a>
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<a href="/news">News</a>
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<a href="/sports">Sports</a>
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</nav>
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</header>
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<div class="ad-banner">Advertisement Here</div>
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<main>
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<article class="news-article">
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<h1>Breaking News: Important Event Happens</h1>
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<p class="byline">By Jane Reporter | January 15, 2024</p>
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<p>In a surprising turn of events, something important happened today
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that will affect millions of people around the world.</p>
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<p>Experts say this development represents a major shift in how
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we think about the topic at hand.</p>
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<p>"This is truly unprecedented," said Dr. Expert, a leading
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authority in the field.</p>
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<p>The implications of this event are still being analyzed, but
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early reports suggest significant changes ahead.</p>
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</article>
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</main>
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<aside class="sidebar">
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<h3>Trending Stories</h3>
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<ul>
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<li><a href="/story1">Story 1</a></li>
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<li><a href="/story2">Story 2</a></li>
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</ul>
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</aside>
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<footer>
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<p>© 2024 News Site</p>
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<a href="/privacy">Privacy Policy</a>
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</footer>
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<script>trackPageView();</script>
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</body>
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</html>"""
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result = extractor.extract(html)
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# Main article content should be preserved
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assert "Important Event Happens" in result.extracted
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assert "surprising turn of events" in result.extracted
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assert "Dr. Expert" in result.extracted
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# Noise should be removed or minimized
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assert "trackPageView" not in result.extracted
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assert "window.analytics" not in result.extracted
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# Significant reduction
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assert result.compression_ratio < 0.4
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def test_documentation_page(self, extractor):
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"""Tests extraction from documentation-like page."""
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html = """<!DOCTYPE html>
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<html>
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<head>
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<title>API Documentation - MyService</title>
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</head>
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<body>
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<nav class="docs-nav">
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<a href="/docs">Docs</a>
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<a href="/api">API</a>
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<a href="/guides">Guides</a>
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</nav>
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<div class="sidebar">
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<h3>Table of Contents</h3>
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<ul>
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<li><a href="#intro">Introduction</a></li>
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<li><a href="#auth">Authentication</a></li>
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</ul>
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</div>
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<main class="content">
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<h1>API Documentation</h1>
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<section id="intro">
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<h2>Introduction</h2>
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<p>Welcome to the MyService API documentation. This guide will
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help you integrate our service into your application.</p>
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</section>
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<section id="auth">
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<h2>Authentication</h2>
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<p>All API requests require authentication using an API key.
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Include your key in the Authorization header.</p>
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<pre><code>Authorization: Bearer YOUR_API_KEY</code></pre>
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</section>
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</main>
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<footer>Built with Docs Generator</footer>
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</body>
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</html>"""
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result = extractor.extract(html)
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# Documentation content should be preserved
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assert "API Documentation" in result.extracted
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assert "Authentication" in result.extracted
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assert "API key" in result.extracted
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def test_blog_post(self, extractor):
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"""Tests extraction from blog-post-like structure."""
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html = """<!DOCTYPE html>
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<html>
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<head>
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<title>My Blog Post Title - Personal Blog</title>
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<meta name="author" content="Blog Author">
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</head>
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<body>
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<header>
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<h1 class="site-title">My Personal Blog</h1>
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<nav>Home | About | Contact</nav>
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</header>
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<article class="blog-post">
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<h1>My Blog Post Title</h1>
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<time>Posted on March 15, 2024</time>
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<p>Today I want to share my thoughts on an interesting topic
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that I've been thinking about for a while.</p>
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<p>The key insight is that we often overlook the simple things
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in life that bring us joy.</p>
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<p>In conclusion, I believe we should all take more time to
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appreciate the small moments.</p>
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</article>
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<section class="comments">
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<h3>Comments</h3>
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<div class="comment">Great post!</div>
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</section>
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<footer>© 2024 Blog Author</footer>
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</body>
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</html>"""
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result = extractor.extract(html)
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# Blog content should be preserved
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assert "Blog Post Title" in result.extracted
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assert "interesting topic" in result.extracted
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assert "small moments" in result.extracted
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class TestBatchExtraction:
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"""Tests for batch extraction."""
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def test_extract_batch(self):
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"""Tests batch extraction of multiple HTML pages."""
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extractor = HTMLExtractor()
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pages = [
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(
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"<html><body><article><p>Page one content.</p></article></body></html>",
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"http://example.com/page1",
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),
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(
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"<html><body><article><p>Page two content.</p></article></body></html>",
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"http://example.com/page2",
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),
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(
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"<html><body><article><p>Page three content.</p></article></body></html>",
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None,
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),
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]
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results = extractor.extract_batch(pages)
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assert len(results) == 3
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assert all(isinstance(r, HTMLExtractionResult) for r in results)
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class TestContentDetectorIntegration:
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"""Tests for integration with content_detector."""
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def test_detector_identifies_html(self):
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"""Tests that content_detector correctly identifies HTML."""
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from headroom.transforms.content_detector import ContentType, detect_content_type
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html = """<!DOCTYPE html>
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<html>
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<head><title>Test</title></head>
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<body>
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<div><p>Content</p></div>
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</body>
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</html>"""
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result = detect_content_type(html)
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assert result.content_type == ContentType.HTML
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assert result.confidence >= 0.7
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def test_detector_rejects_non_html(self):
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"""Tests that content_detector doesn't misidentify non-HTML."""
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from headroom.transforms.content_detector import ContentType, detect_content_type
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# Plain text
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result = detect_content_type("Just some plain text without HTML.")
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assert result.content_type != ContentType.HTML
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# JSON
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result = detect_content_type('[{"id": 1}, {"id": 2}]')
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assert result.content_type == ContentType.JSON_ARRAY
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# Code (needs enough patterns to trigger detection)
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code = """
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import os
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import sys
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def hello():
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print('world')
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class Foo:
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def __init__(self):
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pass
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if __name__ == '__main__':
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hello()
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"""
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result = detect_content_type(code)
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assert result.content_type == ContentType.SOURCE_CODE
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