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sub2api/backend/internal/service/openai_passthrough_normalization_test.go
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package service
import (
"testing"
"github.com/stretchr/testify/require"
"github.com/tidwall/gjson"
)
func TestNormalizeOpenAIPassthroughOAuthBody_RemovesUnsupportedUser(t *testing.T) {
body := []byte(`{"model":"gpt-5.4","input":"hello","user":"user_123","metadata":{"user_id":"user_123"},"prompt_cache_retention":"24h","safety_identifier":"sid","stream_options":{"include_usage":true}}`)
normalized, changed, err := normalizeOpenAIPassthroughOAuthBody(body, false)
require.NoError(t, err)
require.True(t, changed)
for _, field := range openAIChatGPTInternalUnsupportedFields {
require.False(t, gjson.GetBytes(normalized, field).Exists(), "%s should be stripped", field)
}
require.True(t, gjson.GetBytes(normalized, "stream").Bool())
require.False(t, gjson.GetBytes(normalized, "store").Bool())
}
func TestNormalizeOpenAIPassthroughOAuthBody_CompactRemovesUnsupportedUser(t *testing.T) {
body := []byte(`{"model":"gpt-5.4","input":"hello","user":"user_123","metadata":{"user_id":"user_123"},"stream":true,"store":true}`)
normalized, changed, err := normalizeOpenAIPassthroughOAuthBody(body, true)
require.NoError(t, err)
require.True(t, changed)
require.False(t, gjson.GetBytes(normalized, "user").Exists())
require.False(t, gjson.GetBytes(normalized, "metadata").Exists())
require.False(t, gjson.GetBytes(normalized, "stream").Exists())
require.False(t, gjson.GetBytes(normalized, "store").Exists())
}
func TestNormalizeOpenAIPassthroughOAuthBody_StringInputWrappedAsArray(t *testing.T) {
body := []byte(`{"model":"gpt-5.4","input":"hello world"}`)
normalized, changed, err := normalizeOpenAIPassthroughOAuthBody(body, false)
require.NoError(t, err)
require.True(t, changed)
input := gjson.GetBytes(normalized, "input")
require.True(t, input.IsArray(), "string input should be converted to array")
items := input.Array()
require.Len(t, items, 1)
require.Equal(t, "message", items[0].Get("type").String())
require.Equal(t, "user", items[0].Get("role").String())
require.Equal(t, "hello world", items[0].Get("content").String())
}
func TestNormalizeOpenAIPassthroughOAuthBody_EmptyStringInputWrappedAsEmptyArray(t *testing.T) {
body := []byte(`{"model":"gpt-5.4","input":" "}`)
normalized, changed, err := normalizeOpenAIPassthroughOAuthBody(body, false)
require.NoError(t, err)
require.True(t, changed)
input := gjson.GetBytes(normalized, "input")
require.True(t, input.IsArray())
require.Len(t, input.Array(), 0, "whitespace-only input should become empty array")
}
func TestNormalizeOpenAIPassthroughOAuthBody_ObjectInputWrappedAsArray(t *testing.T) {
body := []byte(`{"model":"gpt-5.4","input":{"type":"message","role":"user","content":"hi"}}`)
normalized, changed, err := normalizeOpenAIPassthroughOAuthBody(body, false)
require.NoError(t, err)
require.True(t, changed)
input := gjson.GetBytes(normalized, "input")
require.True(t, input.IsArray(), "object input should be wrapped in array")
items := input.Array()
require.Len(t, items, 1)
require.Equal(t, "message", items[0].Get("type").String())
}
func TestNormalizeOpenAIPassthroughOAuthBody_ArrayInputUnchanged(t *testing.T) {
body := []byte(`{"model":"gpt-5.4","input":[{"type":"message","role":"user","content":"hi"}]}`)
normalized, _, err := normalizeOpenAIPassthroughOAuthBody(body, false)
require.NoError(t, err)
input := gjson.GetBytes(normalized, "input")
require.True(t, input.IsArray())
require.Len(t, input.Array(), 1)
require.Equal(t, "message", input.Array()[0].Get("type").String())
}
func TestDetectOpenAIPassthroughInstructionsRejectReason(t *testing.T) {
for _, tt := range []struct {
name string
body string
want string
}{
{name: "missing is optional", body: `{"model":"gpt-5.1-codex"}`, want: ""},
{name: "non string remains rejected", body: `{"instructions":{"text":"invalid"}}`, want: "instructions_not_string"},
{name: "empty remains rejected", body: `{"instructions":" "}`, want: "instructions_empty"},
{name: "non empty remains accepted", body: `{"instructions":"client guidance"}`, want: ""},
} {
t.Run(tt.name, func(t *testing.T) {
require.Equal(t, tt.want, detectOpenAIPassthroughInstructionsRejectReason("gpt-5.1-codex", []byte(tt.body)))
})
}
}