tests/test_timeline_formatter.py

"""
Test suite for TimelineFormatter

Tests the formatting and display generation for timeline visualizations.
"""

import pytest
from typing import Dict, Any

# Import your formatter (adjust path as needed)
# from app import TimelineFormatter, TimelineMetrics


class TestTimelineFormatter:
    """Test suite for TimelineFormatter class"""
    
    @pytest.fixture
    def sample_metrics(self):
        """Create sample TimelineMetrics for testing"""
        # TODO: Create TimelineMetrics instance with known values
        pass
    
    def test_format_markdown_comparison(self, sample_metrics):
        """Test markdown comparison formatting"""
        # TODO: Generate markdown and verify structure
        # - Should contain both timelines
        # - Should show costs
        # - Should include time savings
        pass
    
    def test_markdown_contains_industry_timeline(self, sample_metrics):
        """Test that markdown includes industry standard timeline"""
        # TODO: Verify "WITHOUT ARF" section exists
        # - T+0, T+14, T+28, T+60 markers
        # - Cost display
        pass
    
    def test_markdown_contains_arf_timeline(self, sample_metrics):
        """Test that markdown includes ARF timeline"""
        # TODO: Verify "WITH ARF" section exists
        # - T+0, T+2, T+3, T+5 markers
        # - Cost display
        pass
    
    def test_markdown_shows_difference_section(self, sample_metrics):
        """Test that markdown includes difference section"""
        # TODO: Verify "THE DIFFERENCE" section
        # - Time saved
        # - Cost saved
        # - Speed multiplier
        pass
    
    def test_format_summary_stats(self, sample_metrics):
        """Test summary statistics formatting"""
        # TODO: Verify returns dict with correct keys
        # - time_saved_minutes
        # - cost_savings
        # - speed_multiplier
        # - time_improvement_pct
        # - arf_total_time
        # - industry_total_time
        pass
    
    def test_summary_stats_rounding(self, sample_metrics):
        """Test that summary stats are rounded appropriately"""
        # TODO: Verify decimal precision
        # - Cost should be integer
        # - Time should be 1 decimal
        # - Percentage should be 1 decimal
        pass
    
    def test_format_visual_bars(self, sample_metrics):
        """Test visual bar chart formatting"""
        # TODO: Generate bars and verify
        # - Industry bar length
        # - ARF bar length (proportional)
        # - Percentage display
        pass
    
    def test_visual_bars_proportional(self, sample_metrics):
        """Test that visual bars maintain correct proportions"""
        # TODO: Verify bar lengths are proportional to time
        pass
    
    def test_visual_bars_max_length(self):
        """Test that visual bars don't exceed max length"""
        # TODO: Even with extreme values, bars should fit
        pass
    
    def test_format_with_zero_values(self):
        """Test formatting with edge case values"""
        # TODO: Handle zero time savings gracefully
        pass
    
    def test_format_with_large_numbers(self):
        """Test formatting with very large cost savings"""
        # TODO: Verify comma formatting for readability
        # - \$1,000,000 not \$1000000
        pass
    
    def test_format_special_characters_escaped(self, sample_metrics):
        """Test that special markdown characters are escaped"""
        # TODO: Ensure no markdown injection possible
        pass


class TestTimelineFormatterEdgeCases:
    """Test edge cases in formatting"""
    
    def test_format_negative_time_savings(self):
        """Test formatting when ARF is slower (shouldn't happen)"""
        # TODO: Handle gracefully, maybe show "N/A"
        pass
    
    def test_format_very_small_time_differences(self):
        """Test formatting when times are very close"""
        # TODO: Should still display clearly
        pass
    
    def test_format_extremely_large_costs(self):
        """Test formatting multi-million dollar savings"""
        # TODO: Verify readability with large numbers
        pass
    
    def test_unicode_characters_in_bars(self):
        """Test that unicode bar characters render correctly"""
        # TODO: Verify █ character displays properly
        pass


class TestTimelineFormatterIntegration:
    """Test formatter integration with calculator"""
    
    def test_calculator_to_formatter_pipeline(self):
        """Test complete flow from calculation to formatting"""
        # TODO: Calculate metrics → Format → Verify output
        pass
    
    def test_multiple_format_calls_consistent(self, sample_metrics):
        """Test that formatter is deterministic"""
        # TODO: Same input should always produce same output
        pass
    
    def test_all_format_methods_use_same_metrics(self, sample_metrics):
        """Test that all format methods work with same metrics object"""
        # TODO: Verify consistency across formats
        pass


# Parametrized tests for different metric scenarios
@pytest.mark.parametrize("time_saved,expected_emoji", [
    (55.0, "⏰"),  # Good savings
    (30.0, "⏰"),  # Medium savings
    (5.0, "⏰"),   # Small savings
])
def test_format_includes_appropriate_emojis(time_saved, expected_emoji):
    """Test that formatting includes appropriate visual indicators"""
    # TODO: Implement parametrized test
    pass