Sub2API v1.0 - AI API 网关（二开初始版本，基于上游 Wei-Shaw/sub2api）

backend/internal/service/shadow_routing_test.go

@@ -0,0 +1,21 @@
+package service
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestDefaultSparkShadowModelMapping(t *testing.T) {
+	mapping := defaultSparkShadowModelMapping()
+
+	require.Len(t, mapping, 1, "spark 无 effort 变体，默认只含 base 模型")
+	require.Equal(t, "gpt-5.3-codex-spark", mapping["gpt-5.3-codex-spark"], "恒等映射：base 映射到自身")
+}
+
+func TestSparkModelVariantsDerivedFromAliases(t *testing.T) {
+	got := sparkModelVariants()
+	require.ElementsMatch(t, []string{
+		"gpt-5.3-codex-spark",
+	}, got, "spark 只有 base：effort 变体不存在，已从 codexModelMap 移除")
+}