feat: 书库导入导出/图片变体/书籍搜索/小组件运行时等
新增： - 书库导入导出（library_import/library_export）及测试 - 图片变体生成（image_variants）与响应式图片（responsiveImage） - 书籍搜索（bookSearch）+ BookSearch/LibrarySearchGrid 组件 - 小组件运行时（widgetRuntime）与静态检查（widgetLint） - 上传缓存中间件（upload_cache）与字体 CSS 提取脚本 其它： - 后端 handlers/services 全量调整 - 前端页面、组件、库函数与配置更新
This commit is contained in:
282
backend/service/image_variants_test.go
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282
backend/service/image_variants_test.go
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package service
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import (
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"bytes"
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"image"
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"image/color"
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"image/gif"
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"image/jpeg"
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"image/png"
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"io"
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"os"
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"path/filepath"
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"strings"
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"testing"
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"time"
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"github.com/freefire/jiang13-bbs/config"
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webpenc "github.com/gen2brain/webp"
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xwebp "golang.org/x/image/webp"
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)
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// solidImg 生成渐变纯色测试图
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func solidImg(w, h int) *image.RGBA {
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src := image.NewRGBA(image.Rect(0, 0, w, h))
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for y := 0; y < h; y++ {
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for x := 0; x < w; x++ {
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src.Set(x, y, color.RGBA{uint8(x % 256), uint8(y % 256), 128, 255})
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}
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}
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return src
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}
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// writeVariantSource 把按编码器生成的文件写到 uploads 目录
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func writeVariantSource(t *testing.T, dir, url string, encode func(io.Writer) error) {
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t.Helper()
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abs := filepath.Join(dir, filepath.FromSlash(strings.TrimPrefix(url, "/uploads/")))
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if err := os.MkdirAll(filepath.Dir(abs), 0o755); err != nil {
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t.Fatalf("mkdir: %v", err)
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}
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f, err := os.Create(abs)
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if err != nil {
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t.Fatalf("create: %v", err)
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}
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defer f.Close()
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if err := encode(f); err != nil {
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t.Fatalf("encode: %v", err)
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}
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}
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func encodeJPEG(img image.Image) func(io.Writer) error {
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return func(w io.Writer) error {
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return jpeg.Encode(w, img, &jpeg.Options{Quality: 85})
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}
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}
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func encodePNG(img image.Image) func(io.Writer) error {
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return func(w io.Writer) error {
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return png.Encode(w, img)
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}
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}
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func encodeWebP(img image.Image) func(io.Writer) error {
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return func(w io.Writer) error {
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return webpenc.Encode(w, img, webpenc.Options{Quality: 85})
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}
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}
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func encodeGIF(img image.Image) func(io.Writer) error {
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return func(w io.Writer) error {
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return gif.Encode(w, img, nil)
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}
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}
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// decodeVariant 解码返回的 WebP 变体
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func decodeVariant(t *testing.T, data []byte) image.Image {
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t.Helper()
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img, err := xwebp.Decode(bytes.NewReader(data))
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if err != nil {
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t.Fatalf("decode variant webp: %v", err)
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}
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return img
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}
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func TestIsVariantWidth(t *testing.T) {
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if !IsVariantWidth(48) || !IsVariantWidth(1920) {
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t.Fatal("whitelist endpoints should be valid")
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}
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if IsVariantWidth(100) || IsVariantWidth(0) || IsVariantWidth(-48) {
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t.Fatal("non-whitelist width should be invalid")
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}
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}
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func TestVariantRejectsInvalidInput(t *testing.T) {
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s, _ := newUploadTestService(t)
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cases := []struct {
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name string
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url string
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w int
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}{
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{"非法尺寸", "/uploads/images/a.webp", 100},
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{"路径穿越", "/uploads/images/../../etc/passwd", 96},
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{"非白名单目录", "/uploads/secret/a.webp", 96},
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{"非图片扩展名", "/uploads/images/a.txt", 96},
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{"外部地址", "https://evil.com/a.webp", 96},
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{"空地址", "", 96},
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}
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for _, tc := range cases {
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t.Run(tc.name, func(t *testing.T) {
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if _, _, err := s.Variant(tc.url, tc.w); err == nil {
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t.Fatal("want error, got nil")
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}
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})
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}
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}
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func TestVariantMissingFile(t *testing.T) {
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s, _ := newUploadTestService(t)
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if _, _, err := s.Variant("/uploads/images/missing.webp", 96); err == nil {
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t.Fatal("missing source should error")
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}
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}
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func TestVariantPassthroughSmallImage(t *testing.T) {
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s, dir := newUploadTestService(t)
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url := "/uploads/images/small.webp"
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writeVariantSource(t, dir, url, encodeWebP(solidImg(48, 48)))
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data, m, err := s.Variant(url, 96)
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if err != nil {
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t.Fatalf("variant: %v", err)
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}
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if m != "image/webp" {
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t.Fatalf("want webp mime, got %s", m)
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}
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src, _ := os.ReadFile(filepath.Join(dir, filepath.FromSlash("images/small.webp")))
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if !bytes.Equal(data, src) {
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t.Fatal("small image should be returned byte-for-byte")
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}
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}
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func TestVariantResizesByWidthLandscape(t *testing.T) {
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s, dir := newUploadTestService(t)
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url := "/uploads/images/wide.jpg"
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writeVariantSource(t, dir, url, encodeJPEG(solidImg(1000, 500)))
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data, m, err := s.Variant(url, 384)
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if err != nil {
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t.Fatalf("variant: %v", err)
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}
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if m != "image/webp" {
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t.Fatalf("want webp, got %s", m)
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}
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b := decodeVariant(t, data).Bounds()
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if b.Dx() != 384 || b.Dy() != 192 {
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t.Fatalf("want 384x192, got %dx%d", b.Dx(), b.Dy())
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}
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}
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func TestVariantResizesByWidthPortrait(t *testing.T) {
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s, dir := newUploadTestService(t)
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url := "/uploads/images/tall.png"
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writeVariantSource(t, dir, url, encodePNG(solidImg(500, 1000)))
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data, _, err := s.Variant(url, 256)
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if err != nil {
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t.Fatalf("variant: %v", err)
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}
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b := decodeVariant(t, data).Bounds()
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if b.Dx() != 256 || b.Dy() != 512 {
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t.Fatalf("want 256x512, got %dx%d", b.Dx(), b.Dy())
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}
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}
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func TestVariantPassthroughGIFSVGICO(t *testing.T) {
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s, dir := newUploadTestService(t)
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cases := []struct {
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name string
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url string
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mime string
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body []byte
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}{
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{"gif", "/uploads/images/a.gif", "image/gif", nil},
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{"svg", "/uploads/images/a.svg", "image/svg+xml", []byte("<svg xmlns=\"http://www.w3.org/2000/svg\"></svg>")},
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{"ico", "/uploads/images/a.ico", "image/x-icon", []byte("\x00\x00\x01\x00")},
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}
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for _, tc := range cases {
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t.Run(tc.name, func(t *testing.T) {
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if tc.body != nil {
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writeVariantSource(t, dir, tc.url, func(w io.Writer) error {
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_, err := w.Write(tc.body)
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return err
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})
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} else {
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writeVariantSource(t, dir, tc.url, encodeGIF(solidImg(16, 16)))
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}
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data, m, err := s.Variant(tc.url, 96)
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if err != nil {
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t.Fatalf("variant: %v", err)
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}
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if m != tc.mime {
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t.Fatalf("want %s, got %s", tc.mime, m)
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}
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src, _ := os.ReadFile(filepath.Join(dir, filepath.FromSlash(strings.TrimPrefix(tc.url, "/uploads/"))))
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if !bytes.Equal(data, src) {
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t.Fatalf("%s should pass through unchanged", tc.name)
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}
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})
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}
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}
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func TestVariantCachedAndReused(t *testing.T) {
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s, dir := newUploadTestService(t)
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url := "/uploads/images/cache.jpg"
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writeVariantSource(t, dir, url, encodeJPEG(solidImg(1000, 500)))
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first, m, err := s.Variant(url, 384)
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if err != nil {
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t.Fatalf("first variant: %v", err)
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}
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if m != "image/webp" {
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t.Fatalf("want webp, got %s", m)
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}
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cache := s.variantCacheFile(url, 384)
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if info, err := os.Stat(cache); err != nil || info.IsDir() {
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t.Fatalf("cache file should exist: %v", err)
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}
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second, _, err := s.Variant(url, 384)
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if err != nil {
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t.Fatalf("second variant: %v", err)
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}
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if !bytes.Equal(first, second) {
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t.Fatal("cached variant should be byte-identical")
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}
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}
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func TestVariantCacheFreshness(t *testing.T) {
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_, dir := newUploadTestService(t)
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cache := filepath.Join(dir, ".thumbs", "v", "x.webp")
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if err := os.MkdirAll(filepath.Dir(cache), 0o755); err != nil {
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t.Fatal(err)
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}
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if err := os.WriteFile(cache, []byte("data"), 0o644); err != nil {
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t.Fatal(err)
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}
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// 远程对象：modTime 零值，存在即新鲜
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if !variantCacheFresh(cache, time.Time{}) {
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t.Fatal("remote cache should be fresh when file exists")
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}
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// 本地源：mtime 新于缓存 → 不新鲜
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future := time.Now().Add(1 * time.Hour)
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if variantCacheFresh(cache, future) {
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t.Fatal("cache should be stale vs newer source mtime")
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}
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}
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func TestVariantRemoteRejectsBadID(t *testing.T) {
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s, _ := newUploadTestService(t)
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s.ops = NewOperations(s.db, &config.Config{})
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if _, _, err := s.Variant("/api/media/bad/id", 96); err == nil {
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t.Fatal("id with slash should be rejected")
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}
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}
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func TestVariantRemoteUnavailable(t *testing.T) {
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s, _ := newUploadTestService(t)
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s.ops = NewOperations(s.db, &config.Config{})
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// 表不存在/对象不存在：统一对外“暂不可用”，不泄漏细节
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if _, _, err := s.Variant("/api/media/deadbeef", 96); err == nil {
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t.Fatal("missing remote object should error")
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}
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}
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func TestVariantRemoteWithoutOps(t *testing.T) {
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s, _ := newUploadTestService(t)
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if _, _, err := s.Variant("/api/media/abc", 96); err == nil {
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t.Fatal("remote url without ops wired should error")
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}
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}
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