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package diff
import (
"fmt"
"testing"
"github.com/charmbracelet/lipgloss"
"github.com/stretchr/testify/assert"
)
// TestApplyHighlighting tests the applyHighlighting function with various ANSI sequences
func TestApplyHighlighting(t *testing.T) {
t.Parallel()
// Mock theme colors for testing
mockHighlightBg := lipgloss.AdaptiveColor{
Dark: "#FF0000", // Red background for highlighting
Light: "#FF0000",
}
// Test cases
tests := []struct {
name string
content string
segments []Segment
segmentType LineType
expectContains string
}{
{
name: "Simple text with no ANSI",
content: "This is a test",
segments: []Segment{{Start: 0, End: 4, Type: LineAdded}},
segmentType: LineAdded,
// Should contain full reset sequence after highlighting
expectContains: "\x1b[0m",
},
{
name: "Text with existing ANSI foreground",
content: "This \x1b[32mis\x1b[0m a test", // "is" in green
segments: []Segment{{Start: 5, End: 7, Type: LineAdded}},
segmentType: LineAdded,
// Should contain full reset sequence after highlighting
expectContains: "\x1b[0m",
},
{
name: "Text with existing ANSI background",
content: "This \x1b[42mis\x1b[0m a test", // "is" with green background
segments: []Segment{{Start: 5, End: 7, Type: LineAdded}},
segmentType: LineAdded,
// Should contain full reset sequence after highlighting
expectContains: "\x1b[0m",
},
{
name: "Text with complex ANSI styling",
content: "This \x1b[1;32;45mis\x1b[0m a test", // "is" bold green on magenta
segments: []Segment{{Start: 5, End: 7, Type: LineAdded}},
segmentType: LineAdded,
// Should contain full reset sequence after highlighting
expectContains: "\x1b[0m",
},
}
for _, tc := range tests {
tc := tc // Capture range variable for parallel testing
t.Run(tc.name, func(t *testing.T) {
t.Parallel()
result := applyHighlighting(tc.content, tc.segments, tc.segmentType, mockHighlightBg)
// Verify the result contains the expected sequence
assert.Contains(t, result, tc.expectContains,
"Result should contain full reset sequence")
// Print the result for manual inspection if needed
if t.Failed() {
fmt.Printf("Original: %q\nResult: %q\n", tc.content, result)
}
})
}
}
// TestApplyHighlightingWithMultipleSegments tests highlighting multiple segments
func TestApplyHighlightingWithMultipleSegments(t *testing.T) {
t.Parallel()
// Mock theme colors for testing
mockHighlightBg := lipgloss.AdaptiveColor{
Dark: "#FF0000", // Red background for highlighting
Light: "#FF0000",
}
content := "This is a test with multiple segments to highlight"
segments := []Segment{
{Start: 0, End: 4, Type: LineAdded}, // "This"
{Start: 8, End: 9, Type: LineAdded}, // "a"
{Start: 15, End: 23, Type: LineAdded}, // "multiple"
}
result := applyHighlighting(content, segments, LineAdded, mockHighlightBg)
// Verify the result contains the full reset sequence
assert.Contains(t, result, "\x1b[0m",
"Result should contain full reset sequence")
}
|
