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package kitty
import (
"bytes"
"encoding/base64"
"image"
"image/color"
"os"
"path/filepath"
"strings"
"testing"
)
func TestWriteKittyGraphics(t *testing.T) {
// Create a test image
img := image.NewRGBA(image.Rect(0, 0, 2, 2))
img.Set(0, 0, color.RGBA{R: 255, G: 0, B: 0, A: 255})
img.Set(1, 0, color.RGBA{R: 0, G: 255, B: 0, A: 255})
img.Set(0, 1, color.RGBA{R: 0, G: 0, B: 255, A: 255})
img.Set(1, 1, color.RGBA{R: 255, G: 255, B: 255, A: 255})
// Create large test image (larger than [MaxChunkSize] 4096 bytes)
imgLarge := image.NewRGBA(image.Rect(0, 0, 100, 100))
for y := range 100 {
for x := range 100 {
imgLarge.Set(x, y, color.RGBA{R: 255, G: 0, B: 0, A: 255})
}
}
// Create a temporary test file
tmpDir := t.TempDir()
tmpFile := filepath.Join(tmpDir, "test-image")
if err := os.WriteFile(tmpFile, []byte("test image data"), 0o644); err != nil {
t.Fatal(err)
}
tests := []struct {
name string
img image.Image
opts *Options
wantError bool
check func(t *testing.T, output string)
}{
{
name: "direct transmission",
img: img,
opts: &Options{
Transmission: Direct,
Format: RGB,
},
wantError: false,
check: func(t *testing.T, output string) {
if !strings.HasPrefix(output, "\x1b_G") {
t.Error("output should start with ESC sequence")
}
if !strings.HasSuffix(output, "\x1b\\") {
t.Error("output should end with ST sequence")
}
if !strings.Contains(output, "f=24") {
t.Error("output should contain format specification")
}
},
},
{
name: "chunked transmission",
img: imgLarge,
opts: &Options{
Transmission: Direct,
Format: RGB,
Chunk: true,
},
wantError: false,
check: func(t *testing.T, output string) {
chunks := strings.Split(output, "\x1b\\")
if len(chunks) < 2 {
t.Error("output should contain multiple chunks")
}
chunks = chunks[:len(chunks)-1] // Remove last empty chunk
for i, chunk := range chunks {
if i == len(chunks)-1 {
if !strings.Contains(chunk, "m=0") {
t.Errorf("output should contain chunk end-of-data indicator for chunk %d %q", i, chunk)
}
} else {
if !strings.Contains(chunk, "m=1") {
t.Errorf("output should contain chunk indicator for chunk %d %q", i, chunk)
}
}
}
},
},
{
name: "file transmission",
img: img,
opts: &Options{
Transmission: File,
File: tmpFile,
},
wantError: false,
check: func(t *testing.T, output string) {
if !strings.Contains(output, base64.StdEncoding.EncodeToString([]byte(tmpFile))) {
t.Error("output should contain encoded file path")
}
},
},
{
name: "temp file transmission",
img: img,
opts: &Options{
Transmission: TempFile,
},
wantError: false,
check: func(t *testing.T, output string) {
output = strings.TrimPrefix(output, "\x1b_G")
output = strings.TrimSuffix(output, "\x1b\\")
payload := strings.Split(output, ";")[1]
fn, err := base64.StdEncoding.DecodeString(payload)
if err != nil {
t.Error("output should contain base64 encoded temp file path")
}
if !strings.Contains(string(fn), "tty-graphics-protocol") {
t.Error("output should contain temp file path")
}
if !strings.Contains(output, "t=t") {
t.Error("output should contain transmission specification")
}
},
},
{
name: "compression enabled",
img: img,
opts: &Options{
Transmission: Direct,
Compression: Zlib,
},
wantError: false,
check: func(t *testing.T, output string) {
if !strings.Contains(output, "o=z") {
t.Error("output should contain compression specification")
}
},
},
{
name: "invalid file path",
img: img,
opts: &Options{
Transmission: File,
File: "/nonexistent/file",
},
wantError: true,
check: nil,
},
{
name: "nil options",
img: img,
opts: nil,
wantError: false,
check: func(t *testing.T, output string) {
if !strings.HasPrefix(output, "\x1b_G") {
t.Error("output should start with ESC sequence")
}
},
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
var buf bytes.Buffer
err := EncodeGraphics(&buf, tt.img, tt.opts)
if (err != nil) != tt.wantError {
t.Errorf("WriteKittyGraphics() error = %v, wantError %v", err, tt.wantError)
return
}
if !tt.wantError && tt.check != nil {
tt.check(t, buf.String())
}
})
}
}
func TestWriteKittyGraphicsEdgeCases(t *testing.T) {
tests := []struct {
name string
img image.Image
opts *Options
wantError bool
}{
{
name: "zero size image",
img: image.NewRGBA(image.Rect(0, 0, 0, 0)),
opts: &Options{
Transmission: Direct,
},
wantError: false,
},
{
name: "shared memory transmission",
img: image.NewRGBA(image.Rect(0, 0, 1, 1)),
opts: &Options{
Transmission: SharedMemory,
},
wantError: true, // Not implemented
},
{
name: "file transmission without file path",
img: image.NewRGBA(image.Rect(0, 0, 1, 1)),
opts: &Options{
Transmission: File,
},
wantError: true,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
var buf bytes.Buffer
err := EncodeGraphics(&buf, tt.img, tt.opts)
if (err != nil) != tt.wantError {
t.Errorf("WriteKittyGraphics() error = %v, wantError %v", err, tt.wantError)
}
})
}
}
|
