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

backend/internal/handler/openai_gateway_ws_failover_resume_test.go

@@ -0,0 +1,35 @@
+package handler
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestOpenAIWSNextAttemptMessageUsesCurrentTurnPayload(t *testing.T) {
+	firstMessage := []byte(`{"type":"response.create","input":"first"}`)
+	currentTurn := []byte(`{"type":"response.create","input":"turn-281"}`)
+
+	next, ok := openAIWSNextAttemptMessage(firstMessage, currentTurn, true)
+
+	require.True(t, ok)
+	require.Equal(t, currentTurn, next)
+	next[0] = 'x'
+	require.Equal(t, byte('{'), currentTurn[0], "retry payload must be cloned")
+}
+
+func TestOpenAIWSNextAttemptMessageRejectsMissingCurrentTurnPayload(t *testing.T) {
+	next, ok := openAIWSNextAttemptMessage([]byte(`{"type":"response.create"}`), nil, true)
+
+	require.False(t, ok)
+	require.Nil(t, next)
+}
+
+func TestOpenAIWSNextAttemptMessageKeepsInitialMessageForFirstTurnFailover(t *testing.T) {
+	firstMessage := []byte(`{"type":"response.create","input":"first"}`)
+
+	next, ok := openAIWSNextAttemptMessage(firstMessage, nil, false)
+
+	require.True(t, ok)
+	require.Equal(t, firstMessage, next)
+}