Template heuristics tests - Cover getSampleData and profile generation

[ewilderj]

Description

Add comprehensive unit tests for the TemplateHeuristics class to ensure proper sample data generation and profile creation for the capture system.

Work Required

1. Create Test File: Add test/capture.template-heuristics.test.js
2. Test getSampleData(): Verify sample data for all known templates
3. Test generateProfile(): Test profile generation for different template patterns
4. Test Fallbacks: Verify fallback behavior for unknown templates
5. Mock Dependencies: Mock page objects where needed

Implementation Details

Based on capture/template-heuristics.js, test coverage for:

Sample Data Templates

• animated-text: text, velocity parameters
• carousel: items array, duration, zoom parameters
• message-banner: title, subtitle
• webp-loop: url, fit parameters
• timeleft: minutes, label
• snake: cellSize, tickMs
• simple-clock: empty object

Profile Generation Patterns

• Clock/time templates: wait for text with digits, timed screenshots
• Text/animation templates: wait for animation, longer video duration
• Carousel templates: wait for media and stability, extended recording
• Media templates: wait for media loading
• Game templates: wait for coverage and initialization
• Banner templates: wait for text, shorter videos
• Default templates: wait for visual stability

Test Cases

• getSampleData() returns correct structure for known templates
• getSampleData() returns empty object {} for unknown templates
• generateProfile() creates appropriate detection strategies
• generateProfile() sets reasonable timeouts and durations
• Pattern matching works for template ID variations
• Mock page analysis returns expected content structure

Files to Create

• test/capture.template-heuristics.test.js - New test file

Acceptance Criteria

• template-heuristics.js statements coverage reaches ≥50%
• All template patterns are tested with expected sample data
• Profile generation logic is validated for each template type
• Edge cases and fallbacks are covered
• Tests use proper mocking for page objects