1package agent
2
3import (
4 "context"
5 "net/http"
6 "os"
7 "path/filepath"
8 "testing"
9 "time"
10
11 "charm.land/fantasy"
12 "charm.land/fantasy/providers/anthropic"
13 "charm.land/fantasy/providers/openai"
14 "charm.land/fantasy/providers/openaicompat"
15 "charm.land/fantasy/providers/openrouter"
16 "github.com/charmbracelet/catwalk/pkg/catwalk"
17 "github.com/charmbracelet/crush/internal/agent/prompt"
18 "github.com/charmbracelet/crush/internal/agent/tools"
19 "github.com/charmbracelet/crush/internal/config"
20 "github.com/charmbracelet/crush/internal/csync"
21 "github.com/charmbracelet/crush/internal/db"
22 "github.com/charmbracelet/crush/internal/history"
23 "github.com/charmbracelet/crush/internal/lsp"
24 "github.com/charmbracelet/crush/internal/message"
25 "github.com/charmbracelet/crush/internal/permission"
26 "github.com/charmbracelet/crush/internal/session"
27 "github.com/stretchr/testify/require"
28 "gopkg.in/dnaeon/go-vcr.v4/pkg/recorder"
29
30 _ "github.com/joho/godotenv/autoload"
31)
32
33// fakeEnv is an environment for testing.
34type fakeEnv struct {
35 workingDir string
36 sessions session.Service
37 messages message.Service
38 permissions permission.Service
39 history history.Service
40 lspClients *csync.Map[string, *lsp.Client]
41}
42
43type builderFunc func(t *testing.T, r *recorder.Recorder) (fantasy.LanguageModel, error)
44
45type modelPair struct {
46 name string
47 largeModel builderFunc
48 smallModel builderFunc
49}
50
51func anthropicBuilder(model string) builderFunc {
52 return func(t *testing.T, r *recorder.Recorder) (fantasy.LanguageModel, error) {
53 provider, err := anthropic.New(
54 anthropic.WithAPIKey(os.Getenv("CRUSH_ANTHROPIC_API_KEY")),
55 anthropic.WithHTTPClient(&http.Client{Transport: r}),
56 )
57 if err != nil {
58 return nil, err
59 }
60 return provider.LanguageModel(t.Context(), model)
61 }
62}
63
64func openaiBuilder(model string) builderFunc {
65 return func(t *testing.T, r *recorder.Recorder) (fantasy.LanguageModel, error) {
66 provider, err := openai.New(
67 openai.WithAPIKey(os.Getenv("CRUSH_OPENAI_API_KEY")),
68 openai.WithHTTPClient(&http.Client{Transport: r}),
69 )
70 if err != nil {
71 return nil, err
72 }
73 return provider.LanguageModel(t.Context(), model)
74 }
75}
76
77func openRouterBuilder(model string) builderFunc {
78 return func(t *testing.T, r *recorder.Recorder) (fantasy.LanguageModel, error) {
79 provider, err := openrouter.New(
80 openrouter.WithAPIKey(os.Getenv("CRUSH_OPENROUTER_API_KEY")),
81 openrouter.WithHTTPClient(&http.Client{Transport: r}),
82 )
83 if err != nil {
84 return nil, err
85 }
86 return provider.LanguageModel(t.Context(), model)
87 }
88}
89
90func zAIBuilder(model string) builderFunc {
91 return func(t *testing.T, r *recorder.Recorder) (fantasy.LanguageModel, error) {
92 provider, err := openaicompat.New(
93 openaicompat.WithBaseURL("https://api.z.ai/api/coding/paas/v4"),
94 openaicompat.WithAPIKey(os.Getenv("CRUSH_ZAI_API_KEY")),
95 openaicompat.WithHTTPClient(&http.Client{Transport: r}),
96 )
97 if err != nil {
98 return nil, err
99 }
100 return provider.LanguageModel(t.Context(), model)
101 }
102}
103
104func testEnv(t *testing.T) fakeEnv {
105 workingDir := filepath.Join("/tmp/crush-test/", t.Name())
106 os.RemoveAll(workingDir)
107
108 err := os.MkdirAll(workingDir, 0o755)
109 require.NoError(t, err)
110
111 conn, err := db.Connect(t.Context(), t.TempDir())
112 require.NoError(t, err)
113
114 q := db.New(conn)
115 sessions := session.NewService(q)
116 messages := message.NewService(q)
117
118 permissions := permission.NewPermissionService(workingDir, true, []string{})
119 history := history.NewService(q, conn)
120 lspClients := csync.NewMap[string, *lsp.Client]()
121
122 t.Cleanup(func() {
123 conn.Close()
124 os.RemoveAll(workingDir)
125 })
126
127 return fakeEnv{
128 workingDir,
129 sessions,
130 messages,
131 permissions,
132 history,
133 lspClients,
134 }
135}
136
137func testSessionAgent(env fakeEnv, large, small fantasy.LanguageModel, systemPrompt string, tools ...fantasy.AgentTool) SessionAgent {
138 largeModel := Model{
139 Model: large,
140 CatwalkCfg: catwalk.Model{
141 ContextWindow: 200000,
142 DefaultMaxTokens: 10000,
143 },
144 }
145 smallModel := Model{
146 Model: small,
147 CatwalkCfg: catwalk.Model{
148 ContextWindow: 200000,
149 DefaultMaxTokens: 10000,
150 },
151 }
152 agent := NewSessionAgent(SessionAgentOptions{largeModel, smallModel, "", systemPrompt, false, true, env.sessions, env.messages, tools})
153 return agent
154}
155
156func coderAgent(r *recorder.Recorder, env fakeEnv, large, small fantasy.LanguageModel) (SessionAgent, error) {
157 fixedTime := func() time.Time {
158 t, _ := time.Parse("1/2/2006", "1/1/2025")
159 return t
160 }
161 prompt, err := coderPrompt(
162 prompt.WithTimeFunc(fixedTime),
163 prompt.WithPlatform("linux"),
164 prompt.WithWorkingDir(filepath.ToSlash(env.workingDir)),
165 )
166 if err != nil {
167 return nil, err
168 }
169 cfg, err := config.Init(env.workingDir, "", false)
170 if err != nil {
171 return nil, err
172 }
173
174 systemPrompt, err := prompt.Build(context.TODO(), large.Provider(), large.Model(), *cfg)
175 if err != nil {
176 return nil, err
177 }
178 allTools := []fantasy.AgentTool{
179 tools.NewBashTool(env.permissions, env.workingDir, cfg.Options.Attribution),
180 tools.NewDownloadTool(env.permissions, env.workingDir, r.GetDefaultClient()),
181 tools.NewEditTool(env.lspClients, env.permissions, env.history, env.workingDir),
182 tools.NewMultiEditTool(env.lspClients, env.permissions, env.history, env.workingDir),
183 tools.NewFetchTool(env.permissions, env.workingDir, r.GetDefaultClient()),
184 tools.NewGlobTool(env.workingDir),
185 tools.NewGrepTool(env.workingDir),
186 tools.NewLsTool(env.permissions, env.workingDir, cfg.Tools.Ls),
187 tools.NewSourcegraphTool(r.GetDefaultClient()),
188 tools.NewViewTool(env.lspClients, env.permissions, env.workingDir),
189 tools.NewWriteTool(env.lspClients, env.permissions, env.history, env.workingDir),
190 }
191
192 return testSessionAgent(env, large, small, systemPrompt, allTools...), nil
193}
194
195// createSimpleGoProject creates a simple Go project structure in the given directory.
196// It creates a go.mod file and a main.go file with a basic hello world program.
197func createSimpleGoProject(t *testing.T, dir string) {
198 goMod := `module example.com/testproject
199
200go 1.23
201`
202 err := os.WriteFile(dir+"/go.mod", []byte(goMod), 0o644)
203 require.NoError(t, err)
204
205 mainGo := `package main
206
207import "fmt"
208
209func main() {
210 fmt.Println("Hello, World!")
211}
212`
213 err = os.WriteFile(dir+"/main.go", []byte(mainGo), 0o644)
214 require.NoError(t, err)
215}