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 "charm.land/x/vcr"
17 "github.com/charmbracelet/catwalk/pkg/catwalk"
18 "github.com/charmbracelet/crush/internal/agent/prompt"
19 "github.com/charmbracelet/crush/internal/agent/tools"
20 "github.com/charmbracelet/crush/internal/config"
21 "github.com/charmbracelet/crush/internal/csync"
22 "github.com/charmbracelet/crush/internal/db"
23 "github.com/charmbracelet/crush/internal/history"
24 "github.com/charmbracelet/crush/internal/lsp"
25 "github.com/charmbracelet/crush/internal/message"
26 "github.com/charmbracelet/crush/internal/permission"
27 "github.com/charmbracelet/crush/internal/session"
28 "github.com/stretchr/testify/require"
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 *vcr.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 *vcr.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 *vcr.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 *vcr.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 *vcr.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, false, true, env.sessions, env.messages, tools})
153 return agent
154}
155
156func coderAgent(r *vcr.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 large.Model(),
163 prompt.WithTimeFunc(fixedTime),
164 prompt.WithPlatform("linux"),
165 prompt.WithWorkingDir(filepath.ToSlash(env.workingDir)),
166 )
167 if err != nil {
168 return nil, err
169 }
170 cfg, err := config.Init(env.workingDir, "", false)
171 if err != nil {
172 return nil, err
173 }
174
175 // NOTE(@andreynering): Set a fixed config to ensure cassettes match
176 // independently of user config on `$HOME/.config/crush/crush.json`.
177 cfg.Options.Attribution = &config.Attribution{
178 TrailerStyle: "co-authored-by",
179 GeneratedWith: true,
180 }
181
182 systemPrompt, err := prompt.Build(context.TODO(), large.Provider(), large.Model(), *cfg)
183 if err != nil {
184 return nil, err
185 }
186
187 // Get the model name for the bash tool
188 modelName := large.Model() // fallback to ID if Name not available
189 if model := cfg.GetModel(large.Provider(), large.Model()); model != nil {
190 modelName = model.Name
191 }
192
193 allTools := []fantasy.AgentTool{
194 tools.NewBashTool(env.permissions, env.workingDir, cfg.Options.Attribution, modelName),
195 tools.NewDownloadTool(env.permissions, env.workingDir, r.GetDefaultClient()),
196 tools.NewEditTool(env.lspClients, env.permissions, env.history, env.workingDir),
197 tools.NewMultiEditTool(env.lspClients, env.permissions, env.history, env.workingDir),
198 tools.NewFetchTool(env.permissions, env.workingDir, r.GetDefaultClient()),
199 tools.NewGlobTool(env.workingDir),
200 tools.NewGrepTool(env.workingDir),
201 tools.NewLsTool(env.permissions, env.workingDir, cfg.Tools.Ls),
202 tools.NewSourcegraphTool(r.GetDefaultClient()),
203 tools.NewViewTool(env.lspClients, env.permissions, env.workingDir),
204 tools.NewWriteTool(env.lspClients, env.permissions, env.history, env.workingDir),
205 }
206
207 return testSessionAgent(env, large, small, systemPrompt, allTools...), nil
208}
209
210// createSimpleGoProject creates a simple Go project structure in the given directory.
211// It creates a go.mod file and a main.go file with a basic hello world program.
212func createSimpleGoProject(t *testing.T, dir string) {
213 goMod := `module example.com/testproject
214
215go 1.23
216`
217 err := os.WriteFile(dir+"/go.mod", []byte(goMod), 0o644)
218 require.NoError(t, err)
219
220 mainGo := `package main
221
222import "fmt"
223
224func main() {
225 fmt.Println("Hello, World!")
226}
227`
228 err = os.WriteFile(dir+"/main.go", []byte(mainGo), 0o644)
229 require.NoError(t, err)
230}