test: add webp converter test

converter/webp/webp_converter_test.go

@@ -0,0 +1,76 @@
+package webp
+
+import (
+	"bytes"
+	"github.com/belphemur/CBZOptimizer/packer"
+	"image"
+	"image/jpeg"
+	"os"
+	"testing"
+)
+
+func TestConvertChapter(t *testing.T) {
+
+	// Load test chapter from testdata
+	temp, err := os.CreateTemp("", "test_chapter_*.cbz")
+	if err != nil {
+		t.Fatalf("failed to create temporary file: %v", err)
+
+	}
+	defer os.Remove(temp.Name())
+	chapter, err := loadTestChapter(temp.Name())
+	if err != nil {
+		t.Fatalf("failed to load test chapter: %v", err)
+	}
+
+	converter := New()
+	quality := uint8(80)
+
+	progress := func(msg string) {
+		t.Log(msg)
+	}
+
+	convertedChapter, err := converter.ConvertChapter(chapter, quality, progress)
+	if err != nil {
+		t.Fatalf("failed to convert chapter: %v", err)
+	}
+
+	if len(convertedChapter.Pages) == 0 {
+		t.Fatalf("no pages were converted")
+	}
+
+	for _, page := range convertedChapter.Pages {
+		if page.Extension != ".webp" {
+			t.Errorf("page %d was not converted to webp format", page.Index)
+		}
+	}
+}
+
+func loadTestChapter(path string) (*packer.Chapter, error) {
+	file, err := os.Open(path)
+	if err != nil {
+		return nil, err
+	}
+	defer file.Close()
+
+	var pages []*packer.Page
+	for i := 0; i < 5; i++ { // Assuming there are 5 pages for the test
+		img := image.NewRGBA(image.Rect(0, 0, 300, 10000))
+		buf := new(bytes.Buffer)
+		err := jpeg.Encode(buf, img, nil)
+		if err != nil {
+			return nil, err
+		}
+		page := &packer.Page{
+			Index:     uint16(i),
+			Contents:  buf,
+			Extension: ".jpg",
+		}
+		pages = append(pages, page)
+	}
+
+	return &packer.Chapter{
+		FilePath: path,
+		Pages:    pages,
+	}, nil
+}