"""Tests for HTMLExtractor. These are real tests using actual HTML content - no mocks. Tests verify that trafilatura correctly extracts main content and removes structural noise. """ import pytest # Skip entire module if trafilatura not installed pytest.importorskip("trafilatura") from headroom.transforms.html_extractor import ( HTMLExtractionResult, HTMLExtractor, HTMLExtractorConfig, is_html_content, ) class TestIsHtmlContent: """Tests for the is_html_content detection function.""" def test_detects_doctype_html(self): """Detects HTML with DOCTYPE declaration.""" html = "Content" assert is_html_content(html) is True def test_detects_html_tag(self): """Detects HTML with html tag.""" html = "Content" assert is_html_content(html) is True def test_detects_structural_tags(self): """Detects HTML with multiple structural tags (needs doctype or html tag).""" # Note: is_html_content requires DOCTYPE or tag, or 3+ structural tags # Just structural tags alone may not trigger detection html = "
Content
" assert is_html_content(html) is True def test_rejects_plain_text(self): """Rejects plain text.""" text = "This is just plain text with no HTML." assert is_html_content(text) is False def test_rejects_json(self): """Rejects JSON content.""" json_content = '{"name": "test", "value": 123}' assert is_html_content(json_content) is False def test_rejects_markdown(self): """Rejects markdown content.""" markdown = "# Heading\n\nParagraph with **bold** text." assert is_html_content(markdown) is False def test_rejects_code(self): """Rejects source code.""" code = "def hello():\n print('world')" assert is_html_content(code) is False def test_rejects_empty(self): """Rejects empty content.""" assert is_html_content("") is False assert is_html_content(None) is False # type: ignore def test_case_insensitive(self): """Detection is case insensitive.""" html = "Content" assert is_html_content(html) is True class TestHTMLExtractor: """Tests for HTMLExtractor content extraction.""" @pytest.fixture def extractor(self): """Create a default HTMLExtractor.""" return HTMLExtractor() def test_extracts_article_content(self, extractor): """Extracts main article content.""" html = """ Test Article

Article Title

This is the main content of the article.

It contains important information for the reader.

""" result = extractor.extract(html) assert "Article Title" in result.extracted assert "main content" in result.extracted assert "important information" in result.extracted # Navigation and footer should be removed assert "Home" not in result.extracted or "Copyright" not in result.extracted def test_removes_script_tags(self, extractor): """Removes JavaScript content.""" html = """

Actual content that matters.

""" result = extractor.extract(html) assert "malicious" not in result.extracted assert "alert" not in result.extracted assert "anotherScript" not in result.extracted assert "Actual content" in result.extracted def test_removes_style_tags(self, extractor): """Removes CSS content.""" html = """

Real content here.

""" result = extractor.extract(html) assert "color: red" not in result.extracted assert "display: none" not in result.extracted assert "Real content" in result.extracted def test_compression_ratio(self, extractor): """Verifies significant compression ratio.""" html = """ Page Title

Main Article Heading

This is the first paragraph of actual content.

This is the second paragraph with more details.

""" result = extractor.extract(html) # Should achieve significant reduction assert result.compression_ratio < 0.5 # At least 50% reduction assert result.reduction_percent > 50 # Main content should be preserved assert "Main Article Heading" in result.extracted assert "first paragraph" in result.extracted def test_extracts_metadata(self, extractor): """Extracts page metadata.""" html = """ Page Title for Testing

Page Title for Testing

Content here.

""" result = extractor.extract(html) assert result.title == "Page Title for Testing" assert result.metadata.get("title") == "Page Title for Testing" def test_handles_empty_html(self, extractor): """Handles empty HTML gracefully.""" result = extractor.extract("") assert result.extracted == "" assert result.original_length == 0 assert result.extracted_length == 0 def test_handles_whitespace_only(self, extractor): """Handles whitespace-only input.""" result = extractor.extract(" \n\t ") assert result.extracted == "" assert result.compression_ratio == 0.0 def test_handles_minimal_html(self, extractor): """Handles minimal HTML structure.""" html = "

Just a paragraph.

" result = extractor.extract(html) # trafilatura may or may not extract minimal content # Just verify it doesn't crash assert isinstance(result.extracted, str) assert result.original_length > 0 def test_preserves_paragraphs(self, extractor): """Preserves paragraph structure.""" html = """

First paragraph.

Second paragraph.

Third paragraph.

""" result = extractor.extract(html) assert "First paragraph" in result.extracted assert "Second paragraph" in result.extracted assert "Third paragraph" in result.extracted class TestHTMLExtractorConfig: """Tests for HTMLExtractor configuration options.""" def test_markdown_output_format(self): """Tests markdown output format.""" config = HTMLExtractorConfig(output_format="markdown") extractor = HTMLExtractor(config) html = """

Heading

Paragraph text.

""" result = extractor.extract(html) # Markdown format should include # for heading assert "Heading" in result.extracted def test_text_output_format(self): """Tests plain text output format.""" config = HTMLExtractorConfig(output_format="txt") extractor = HTMLExtractor(config) html = """

Heading

Paragraph text.

""" result = extractor.extract(html) assert "Heading" in result.extracted assert "Paragraph" in result.extracted def test_disable_metadata_extraction(self): """Tests disabling metadata extraction.""" config = HTMLExtractorConfig(extract_metadata=False) extractor = HTMLExtractor(config) html = """ Test Title

Content.

""" result = extractor.extract(html) # Metadata should be empty when disabled assert result.title is None assert result.metadata == {} class TestHTMLExtractionResult: """Tests for HTMLExtractionResult dataclass.""" def test_reduction_percent_calculation(self): """Tests reduction percent calculation.""" result = HTMLExtractionResult( extracted="short", original="much longer content here", original_length=100, extracted_length=25, compression_ratio=0.25, ) assert result.reduction_percent == 75.0 def test_reduction_percent_with_zero_original(self): """Tests reduction percent with zero original length.""" result = HTMLExtractionResult( extracted="", original="", original_length=0, extracted_length=0, compression_ratio=0.0, ) assert result.reduction_percent == 0.0 class TestRealWorldHTML: """Tests with realistic HTML content.""" @pytest.fixture def extractor(self): return HTMLExtractor() def test_news_article_structure(self, extractor): """Tests extraction from news-article-like structure.""" html = """ Breaking News: Important Event Happens
Advertisement Here

Breaking News: Important Event Happens

By Jane Reporter | January 15, 2024

In a surprising turn of events, something important happened today that will affect millions of people around the world.

Experts say this development represents a major shift in how we think about the topic at hand.

"This is truly unprecedented," said Dr. Expert, a leading authority in the field.

The implications of this event are still being analyzed, but early reports suggest significant changes ahead.

""" result = extractor.extract(html) # Main article content should be preserved assert "Important Event Happens" in result.extracted assert "surprising turn of events" in result.extracted assert "Dr. Expert" in result.extracted # Noise should be removed or minimized assert "trackPageView" not in result.extracted assert "window.analytics" not in result.extracted # Significant reduction assert result.compression_ratio < 0.4 def test_documentation_page(self, extractor): """Tests extraction from documentation-like page.""" html = """ API Documentation - MyService

Table of Contents

API Documentation

Introduction

Welcome to the MyService API documentation. This guide will help you integrate our service into your application.

Authentication

All API requests require authentication using an API key. Include your key in the Authorization header.

Authorization: Bearer YOUR_API_KEY
""" result = extractor.extract(html) # Documentation content should be preserved assert "API Documentation" in result.extracted assert "Authentication" in result.extracted assert "API key" in result.extracted def test_blog_post(self, extractor): """Tests extraction from blog-post-like structure.""" html = """ My Blog Post Title - Personal Blog

My Personal Blog

My Blog Post Title

Today I want to share my thoughts on an interesting topic that I've been thinking about for a while.

The key insight is that we often overlook the simple things in life that bring us joy.

In conclusion, I believe we should all take more time to appreciate the small moments.

Comments

Great post!
""" result = extractor.extract(html) # Blog content should be preserved assert "Blog Post Title" in result.extracted assert "interesting topic" in result.extracted assert "small moments" in result.extracted class TestBatchExtraction: """Tests for batch extraction.""" def test_extract_batch(self): """Tests batch extraction of multiple HTML pages.""" extractor = HTMLExtractor() pages = [ ( "

Page one content.

", "http://example.com/page1", ), ( "

Page two content.

", "http://example.com/page2", ), ( "

Page three content.

", None, ), ] results = extractor.extract_batch(pages) assert len(results) == 3 assert all(isinstance(r, HTMLExtractionResult) for r in results) class TestContentDetectorIntegration: """Tests for integration with content_detector.""" def test_detector_identifies_html(self): """Tests that content_detector correctly identifies HTML.""" from headroom.transforms.content_detector import ContentType, detect_content_type html = """ Test

Content

""" result = detect_content_type(html) assert result.content_type == ContentType.HTML assert result.confidence >= 0.7 def test_detector_rejects_non_html(self): """Tests that content_detector doesn't misidentify non-HTML.""" from headroom.transforms.content_detector import ContentType, detect_content_type # Plain text result = detect_content_type("Just some plain text without HTML.") assert result.content_type != ContentType.HTML # JSON result = detect_content_type('[{"id": 1}, {"id": 2}]') assert result.content_type == ContentType.JSON_ARRAY # Code (needs enough patterns to trigger detection) code = """ import os import sys def hello(): print('world') class Foo: def __init__(self): pass if __name__ == '__main__': hello() """ result = detect_content_type(code) assert result.content_type == ContentType.SOURCE_CODE