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

backend/internal/repository/gateway_cache_reasoning_test.go

@@ -0,0 +1,41 @@
+package repository
+
+import (
+	"context"
+	"testing"
+	"time"
+
+	"github.com/Wei-Shaw/sub2api/internal/service"
+	"github.com/alicebob/miniredis/v2"
+	"github.com/redis/go-redis/v9"
+	"github.com/stretchr/testify/require"
+)
+
+func TestGatewayCacheReasoningContent(t *testing.T) {
+	mr := miniredis.RunT(t)
+	client := redis.NewClient(&redis.Options{Addr: mr.Addr()})
+	cache := NewGatewayCache(client)
+	ctx := context.Background()
+
+	// 未命中返回哨兵错误，区别于真实读取失败。
+	_, err := cache.GetReasoningContent(ctx, "item_missing")
+	require.ErrorIs(t, err, service.ErrReasoningContentNotFound)
+
+	// 写入后可读回。
+	require.NoError(t, cache.SetReasoningContent(ctx, "item_abc", "think hard", time.Minute))
+	got, err := cache.GetReasoningContent(ctx, "item_abc")
+	require.NoError(t, err)
+	require.Equal(t, "think hard", got)
+
+	// ttl<=0 时兜底为默认 7 天。
+	require.NoError(t, cache.SetReasoningContent(ctx, "item_ttl", "x", 0))
+	ttl := mr.TTL(reasoningContentPrefix + "item_ttl")
+	require.Greater(t, ttl, 6*24*time.Hour)
+	require.LessOrEqual(t, ttl, reasoningContentDefaultTTL)
+
+	// 空 itemID / 空 content 是 no-op（无可缓存内容不算错误）。
+	require.NoError(t, cache.SetReasoningContent(ctx, "", "x", time.Minute))
+	require.NoError(t, cache.SetReasoningContent(ctx, "item_empty", "", time.Minute))
+	_, err = cache.GetReasoningContent(ctx, "item_empty")
+	require.ErrorIs(t, err, service.ErrReasoningContentNotFound)
+}