Files
clawgo/pkg/agent/loop_fallback_test.go
2026-02-18 21:58:03 +08:00

280 lines
8.7 KiB
Go

package agent
import (
"context"
"fmt"
"testing"
"clawgo/pkg/providers"
)
type fallbackTestProvider struct {
byModel map[string]fallbackResult
called []string
}
type fallbackResult struct {
resp *providers.LLMResponse
err error
}
func (p *fallbackTestProvider) Chat(ctx context.Context, messages []providers.Message, tools []providers.ToolDefinition, model string, options map[string]interface{}) (*providers.LLMResponse, error) {
p.called = append(p.called, model)
if r, ok := p.byModel[model]; ok {
return r.resp, r.err
}
return nil, fmt.Errorf("unexpected model: %s", model)
}
func (p *fallbackTestProvider) GetDefaultModel() string {
return ""
}
func TestCallLLMWithModelFallback_RetriesOnUnknownProvider(t *testing.T) {
p := &fallbackTestProvider{
byModel: map[string]fallbackResult{
"gemini-3-flash": {err: fmt.Errorf(`API error (status 502): {"error":{"message":"unknown provider for model gemini-3-flash"}}`)},
"gpt-4o-mini": {resp: &providers.LLMResponse{Content: "ok"}},
},
}
al := &AgentLoop{
provider: p,
proxy: "proxy",
model: "gemini-3-flash",
providersByProxy: map[string]providers.LLMProvider{
"proxy": p,
},
modelsByProxy: map[string][]string{
"proxy": []string{"gemini-3-flash", "gpt-4o-mini"},
},
}
resp, err := al.callLLMWithModelFallback(context.Background(), nil, nil, nil)
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
if resp == nil || resp.Content != "ok" {
t.Fatalf("unexpected response: %+v", resp)
}
if len(p.called) != 2 {
t.Fatalf("expected 2 model attempts, got %d (%v)", len(p.called), p.called)
}
if p.called[0] != "gemini-3-flash" || p.called[1] != "gpt-4o-mini" {
t.Fatalf("unexpected model order: %v", p.called)
}
if al.model != "gpt-4o-mini" {
t.Fatalf("expected model switch to fallback, got %q", al.model)
}
}
func TestCallLLMWithModelFallback_RetriesOnGateway502(t *testing.T) {
p := &fallbackTestProvider{
byModel: map[string]fallbackResult{
"gemini-3-flash": {err: fmt.Errorf("API error (status 502, content-type \"text/html\"): <html>bad gateway</html>")},
"gpt-4o-mini": {resp: &providers.LLMResponse{Content: "ok"}},
},
}
al := &AgentLoop{
provider: p,
proxy: "proxy",
model: "gemini-3-flash",
providersByProxy: map[string]providers.LLMProvider{
"proxy": p,
},
modelsByProxy: map[string][]string{
"proxy": []string{"gemini-3-flash", "gpt-4o-mini"},
},
}
resp, err := al.callLLMWithModelFallback(context.Background(), nil, nil, nil)
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
if resp == nil || resp.Content != "ok" {
t.Fatalf("unexpected response: %+v", resp)
}
if len(p.called) != 2 {
t.Fatalf("expected 2 model attempts, got %d (%v)", len(p.called), p.called)
}
if p.called[0] != "gemini-3-flash" || p.called[1] != "gpt-4o-mini" {
t.Fatalf("unexpected model order: %v", p.called)
}
}
func TestCallLLMWithModelFallback_RetriesOnGateway524(t *testing.T) {
p := &fallbackTestProvider{
byModel: map[string]fallbackResult{
"gemini-3-flash": {err: fmt.Errorf("API error (status 524, content-type \"text/plain; charset=UTF-8\"): error code: 524")},
"gpt-4o-mini": {resp: &providers.LLMResponse{Content: "ok"}},
},
}
al := &AgentLoop{
provider: p,
proxy: "proxy",
model: "gemini-3-flash",
providersByProxy: map[string]providers.LLMProvider{
"proxy": p,
},
modelsByProxy: map[string][]string{
"proxy": []string{"gemini-3-flash", "gpt-4o-mini"},
},
}
resp, err := al.callLLMWithModelFallback(context.Background(), nil, nil, nil)
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
if resp == nil || resp.Content != "ok" {
t.Fatalf("unexpected response: %+v", resp)
}
if len(p.called) != 2 {
t.Fatalf("expected 2 model attempts, got %d (%v)", len(p.called), p.called)
}
if p.called[0] != "gemini-3-flash" || p.called[1] != "gpt-4o-mini" {
t.Fatalf("unexpected model order: %v", p.called)
}
}
func TestCallLLMWithModelFallback_RetriesOnAuthUnavailable500(t *testing.T) {
p := &fallbackTestProvider{
byModel: map[string]fallbackResult{
"gemini-3-flash": {err: fmt.Errorf(`API error (status 500, content-type "application/json"): {"error":{"message":"auth_unavailable: no auth available","type":"server_error","code":"internal_server_error"}}`)},
"gpt-4o-mini": {resp: &providers.LLMResponse{Content: "ok"}},
},
}
al := &AgentLoop{
provider: p,
proxy: "proxy",
model: "gemini-3-flash",
providersByProxy: map[string]providers.LLMProvider{
"proxy": p,
},
modelsByProxy: map[string][]string{
"proxy": []string{"gemini-3-flash", "gpt-4o-mini"},
},
}
resp, err := al.callLLMWithModelFallback(context.Background(), nil, nil, nil)
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
if resp == nil || resp.Content != "ok" {
t.Fatalf("unexpected response: %+v", resp)
}
if len(p.called) != 2 {
t.Fatalf("expected 2 model attempts, got %d (%v)", len(p.called), p.called)
}
if p.called[0] != "gemini-3-flash" || p.called[1] != "gpt-4o-mini" {
t.Fatalf("unexpected model order: %v", p.called)
}
}
func TestCallLLMWithModelFallback_NoRetryOnNonRetryableError(t *testing.T) {
p := &fallbackTestProvider{
byModel: map[string]fallbackResult{
"gemini-3-flash": {err: fmt.Errorf("API error (status 500): internal server error")},
},
}
al := &AgentLoop{
provider: p,
proxy: "proxy",
model: "gemini-3-flash",
providersByProxy: map[string]providers.LLMProvider{
"proxy": p,
},
modelsByProxy: map[string][]string{
"proxy": []string{"gemini-3-flash", "gpt-4o-mini"},
},
}
_, err := al.callLLMWithModelFallback(context.Background(), nil, nil, nil)
if err == nil {
t.Fatalf("expected error")
}
if len(p.called) != 1 {
t.Fatalf("expected single model attempt, got %d (%v)", len(p.called), p.called)
}
}
func TestCallLLMWithModelFallback_SwitchesProxyAfterProxyModelsExhausted(t *testing.T) {
primary := &fallbackTestProvider{
byModel: map[string]fallbackResult{
"gemini-3-flash": {err: fmt.Errorf(`API error (status 502): {"error":{"message":"unknown provider for model gemini-3-flash"}}`)},
"gpt-4o-mini": {err: fmt.Errorf(`API error (status 400): {"error":{"message":"model not found"}}`)},
},
}
backup := &fallbackTestProvider{
byModel: map[string]fallbackResult{
"gemini-3-flash": {err: fmt.Errorf(`API error (status 400): {"error":{"message":"model not found"}}`)},
"deepseek-chat": {resp: &providers.LLMResponse{Content: "ok"}},
},
}
al := &AgentLoop{
proxy: "primary",
proxyFallbacks: []string{"backup"},
model: "gemini-3-flash",
providersByProxy: map[string]providers.LLMProvider{
"primary": primary,
"backup": backup,
},
modelsByProxy: map[string][]string{
"primary": []string{"gemini-3-flash", "gpt-4o-mini"},
"backup": []string{"deepseek-chat"},
},
}
resp, err := al.callLLMWithModelFallback(context.Background(), nil, nil, nil)
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
if resp == nil || resp.Content != "ok" {
t.Fatalf("unexpected response: %+v", resp)
}
if al.proxy != "backup" {
t.Fatalf("expected proxy switch to backup, got %q", al.proxy)
}
if al.model != "deepseek-chat" {
t.Fatalf("expected model switch to deepseek-chat, got %q", al.model)
}
if len(primary.called) != 2 {
t.Fatalf("expected 2 model attempts in primary, got %d (%v)", len(primary.called), primary.called)
}
if len(backup.called) != 2 || backup.called[1] != "deepseek-chat" {
t.Fatalf("unexpected backup attempts: %v", backup.called)
}
}
func TestShouldRetryWithFallbackModel_UnknownProviderError(t *testing.T) {
err := fmt.Errorf(`API error (status 502): {"error":{"message":"unknown provider for model gemini-3-flash","type":"servererror"}}`)
if !shouldRetryWithFallbackModel(err) {
t.Fatalf("expected unknown provider error to trigger fallback retry")
}
}
func TestShouldRetryWithFallbackModel_HTMLUnmarshalError(t *testing.T) {
err := fmt.Errorf("failed to unmarshal response: invalid character '<' looking for beginning of value")
if !shouldRetryWithFallbackModel(err) {
t.Fatalf("expected HTML parse error to trigger fallback retry")
}
}
func TestShouldRetryWithFallbackModel_Gateway524Error(t *testing.T) {
err := fmt.Errorf("API error (status 524, content-type \"text/plain; charset=UTF-8\"): error code: 524")
if !shouldRetryWithFallbackModel(err) {
t.Fatalf("expected 524 gateway timeout to trigger fallback retry")
}
}
func TestShouldRetryWithFallbackModel_AuthUnavailableError(t *testing.T) {
err := fmt.Errorf(`API error (status 500, content-type "application/json"): {"error":{"message":"auth_unavailable: no auth available","type":"server_error","code":"internal_server_error"}}`)
if !shouldRetryWithFallbackModel(err) {
t.Fatalf("expected auth_unavailable error to trigger fallback retry")
}
}