Initial commit

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

models/v/vidmod/m3u8sign_test.go

@@ -0,0 +1,35 @@
+package vidmod
+
+import "testing"
+
+// countingSigner 记录被交出的地址字段个数，用于验证各响应体 SignM3u8 的字段枚举是否完整。
+type countingSigner struct{ n int }
+
+func (c *countingSigner) SignM3u8URL(field *string, playable, preview bool) { c.n++ }
+
+func TestVideoInfoOffersThreeFields(t *testing.T) {
+	c := &countingSigner{}
+	(&VideoInfo{}).SignM3u8(c)
+	if c.n != 3 { // sourceURL + h265Url + previewURL
+		t.Fatalf("VideoInfo should offer 3 url fields, got %d", c.n)
+	}
+}
+
+func TestVideoInfoRespOffersTwoFields(t *testing.T) {
+	c := &countingSigner{}
+	(&VideoInfoResp{}).SignM3u8(c)
+	if c.n != 2 { // sourceURL + h265Url(无 previewURL)
+		t.Fatalf("VideoInfoResp should offer 2 url fields, got %d", c.n)
+	}
+}
+
+func TestNilVideosAreSafe(t *testing.T) {
+	c := &countingSigner{}
+	var v *VideoInfo
+	v.SignM3u8(c) // nil 接收者不应 panic
+	SignM3u8Infos(c, []*VideoInfo{nil})
+	SignM3u8Resps(c, []*VideoInfoResp{nil})
+	if c.n != 0 {
+		t.Fatalf("nil videos must not offer any field, got %d", c.n)
+	}
+}