sub2api/backend/internal/service/openai_gateway_chat_completions_test.go

package service

import (
	"testing"

	"github.com/Wei-Shaw/sub2api/internal/pkg/apicompat"
	"github.com/stretchr/testify/require"
	"github.com/tidwall/gjson"
)

func TestNormalizeResponsesRequestServiceTier(t *testing.T) {
	t.Parallel()

	req := &apicompat.ResponsesRequest{ServiceTier: " fast "}
	normalizeResponsesRequestServiceTier(req)
	require.Equal(t, "priority", req.ServiceTier)

	req.ServiceTier = "flex"
	normalizeResponsesRequestServiceTier(req)
	require.Equal(t, "flex", req.ServiceTier)

	// OpenAI 官方合法 tier 应被透传保留。
	req.ServiceTier = "auto"
	normalizeResponsesRequestServiceTier(req)
	require.Equal(t, "auto", req.ServiceTier)

	req.ServiceTier = "default"
	normalizeResponsesRequestServiceTier(req)
	require.Equal(t, "default", req.ServiceTier)

	req.ServiceTier = "scale"
	normalizeResponsesRequestServiceTier(req)
	require.Equal(t, "scale", req.ServiceTier)

	// 真未知值仍被剥离。
	req.ServiceTier = "turbo"
	normalizeResponsesRequestServiceTier(req)
	require.Empty(t, req.ServiceTier)
}

func TestNormalizeResponsesBodyServiceTier(t *testing.T) {
	t.Parallel()

	body, tier, err := normalizeResponsesBodyServiceTier([]byte(`{"model":"gpt-5.1","service_tier":"fast"}`))
	require.NoError(t, err)
	require.Equal(t, "priority", tier)
	require.Equal(t, "priority", gjson.GetBytes(body, "service_tier").String())

	body, tier, err = normalizeResponsesBodyServiceTier([]byte(`{"model":"gpt-5.1","service_tier":"flex"}`))
	require.NoError(t, err)
	require.Equal(t, "flex", tier)
	require.Equal(t, "flex", gjson.GetBytes(body, "service_tier").String())

	// OpenAI 官方 tier 直接保留在 body 中（透传上游）。
	body, tier, err = normalizeResponsesBodyServiceTier([]byte(`{"model":"gpt-5.1","service_tier":"auto"}`))
	require.NoError(t, err)
	require.Equal(t, "auto", tier)
	require.Equal(t, "auto", gjson.GetBytes(body, "service_tier").String())

	body, tier, err = normalizeResponsesBodyServiceTier([]byte(`{"model":"gpt-5.1","service_tier":"default"}`))
	require.NoError(t, err)
	require.Equal(t, "default", tier)
	require.Equal(t, "default", gjson.GetBytes(body, "service_tier").String())

	body, tier, err = normalizeResponsesBodyServiceTier([]byte(`{"model":"gpt-5.1","service_tier":"scale"}`))
	require.NoError(t, err)
	require.Equal(t, "scale", tier)
	require.Equal(t, "scale", gjson.GetBytes(body, "service_tier").String())

	// 真未知值才会被删除。
	body, tier, err = normalizeResponsesBodyServiceTier([]byte(`{"model":"gpt-5.1","service_tier":"turbo"}`))
	require.NoError(t, err)
	require.Empty(t, tier)
	require.False(t, gjson.GetBytes(body, "service_tier").Exists())
}