Files
coder/agent/agentfiles/files_test.go
T
Hugo Dutka 48ab492f49 feat: agents git watch backend (#22565)
Adds real-time git status watching for workspace agents, so the frontend
can subscribe over WebSocket and show
git file changes in near real-time.

1. Subscription is scoped to a **chat** via `GET
/api/experimental/chats/{chat}/git/watch`.
2. The workspace agent automatically determines which paths to watch
based on tool calls made by the chat (and its ancestor chats).
3. Workspace agent polls subscribed repo working trees on a 30s
interval, on tools calls, and on explicit `refresh` from the client.
4. Scans are rate-limited to at most once per second.
5. Edited paths are tracked **in-memory** inside the workspace agent.
There is no database persistence — state is lost on agent restart. This
will be addresses in a future PR.
6. Messages sent over WebSocket include a full-repo snapshot (unified
diff, branch, origin). A new message is emitted only when the snapshot
changes.

This PR was implemented with AI with me closely controlling what it's
doing. The code follows a plan file that was updated continuously during
implementation. Here's the file if you'd like to see it:
[project.md](https://gist.github.com/hugodutka/8722cf80c92f8a56555f7bc595b770e2).
It reflects the current state of the PR.
2026-03-06 10:47:55 +01:00

1192 lines
29 KiB
Go

package agentfiles_test
import (
"bytes"
"context"
"encoding/json"
"fmt"
"io"
"net/http"
"net/http/httptest"
"os"
"path/filepath"
"runtime"
"strings"
"syscall"
"testing"
"github.com/go-chi/chi/v5"
"github.com/google/uuid"
"github.com/spf13/afero"
"github.com/stretchr/testify/require"
"golang.org/x/xerrors"
"cdr.dev/slog/v3"
"cdr.dev/slog/v3/sloggers/slogtest"
"github.com/coder/coder/v2/agent/agentfiles"
"github.com/coder/coder/v2/agent/agentgit"
"github.com/coder/coder/v2/codersdk"
"github.com/coder/coder/v2/codersdk/workspacesdk"
"github.com/coder/coder/v2/testutil"
)
type testFs struct {
afero.Fs
// intercept can return an error for testing when a call fails.
intercept func(call, file string) error
}
func newTestFs(base afero.Fs, intercept func(call, file string) error) *testFs {
return &testFs{
Fs: base,
intercept: intercept,
}
}
func (fs *testFs) Open(name string) (afero.File, error) {
if err := fs.intercept("open", name); err != nil {
return nil, err
}
return fs.Fs.Open(name)
}
func (fs *testFs) Create(name string) (afero.File, error) {
if err := fs.intercept("create", name); err != nil {
return nil, err
}
// Unlike os, afero lets you create files where directories already exist and
// lets you nest them underneath files, somehow.
stat, err := fs.Fs.Stat(name)
if err == nil && stat.IsDir() {
return nil, &os.PathError{
Op: "open",
Path: name,
Err: syscall.EISDIR,
}
}
stat, err = fs.Fs.Stat(filepath.Dir(name))
if err == nil && !stat.IsDir() {
return nil, &os.PathError{
Op: "open",
Path: name,
Err: syscall.ENOTDIR,
}
}
return fs.Fs.Create(name)
}
func (fs *testFs) MkdirAll(name string, mode os.FileMode) error {
if err := fs.intercept("mkdirall", name); err != nil {
return err
}
// Unlike os, afero lets you create directories where files already exist and
// lets you nest them underneath files somehow.
stat, err := fs.Fs.Stat(filepath.Dir(name))
if err == nil && !stat.IsDir() {
return &os.PathError{
Op: "mkdir",
Path: name,
Err: syscall.ENOTDIR,
}
}
stat, err = fs.Fs.Stat(name)
if err == nil && !stat.IsDir() {
return &os.PathError{
Op: "mkdir",
Path: name,
Err: syscall.ENOTDIR,
}
}
return fs.Fs.MkdirAll(name, mode)
}
func (fs *testFs) Rename(oldName, newName string) error {
if err := fs.intercept("rename", newName); err != nil {
return err
}
return fs.Fs.Rename(oldName, newName)
}
func TestReadFile(t *testing.T) {
t.Parallel()
tmpdir := os.TempDir()
noPermsFilePath := filepath.Join(tmpdir, "no-perms")
logger := slogtest.Make(t, &slogtest.Options{IgnoreErrors: true}).Leveled(slog.LevelDebug)
fs := newTestFs(afero.NewMemMapFs(), func(call, file string) error {
if file == noPermsFilePath {
return os.ErrPermission
}
return nil
})
api := agentfiles.NewAPI(logger, fs, nil)
dirPath := filepath.Join(tmpdir, "a-directory")
err := fs.MkdirAll(dirPath, 0o755)
require.NoError(t, err)
filePath := filepath.Join(tmpdir, "file")
err = afero.WriteFile(fs, filePath, []byte("content"), 0o644)
require.NoError(t, err)
imagePath := filepath.Join(tmpdir, "file.png")
err = afero.WriteFile(fs, imagePath, []byte("not really an image"), 0o644)
require.NoError(t, err)
tests := []struct {
name string
path string
limit int64
offset int64
bytes []byte
mimeType string
errCode int
error string
}{
{
name: "NoPath",
path: "",
errCode: http.StatusBadRequest,
error: "\"path\" is required",
},
{
name: "RelativePathDotSlash",
path: "./relative",
errCode: http.StatusBadRequest,
error: "file path must be absolute",
},
{
name: "RelativePath",
path: "also-relative",
errCode: http.StatusBadRequest,
error: "file path must be absolute",
},
{
name: "NegativeLimit",
path: filePath,
limit: -10,
errCode: http.StatusBadRequest,
error: "value is negative",
},
{
name: "NegativeOffset",
path: filePath,
offset: -10,
errCode: http.StatusBadRequest,
error: "value is negative",
},
{
name: "NonExistent",
path: filepath.Join(tmpdir, "does-not-exist"),
errCode: http.StatusNotFound,
error: "file does not exist",
},
{
name: "IsDir",
path: dirPath,
errCode: http.StatusBadRequest,
error: "not a file",
},
{
name: "NoPermissions",
path: noPermsFilePath,
errCode: http.StatusForbidden,
error: "permission denied",
},
{
name: "Defaults",
path: filePath,
bytes: []byte("content"),
mimeType: "application/octet-stream",
},
{
name: "Limit1",
path: filePath,
limit: 1,
bytes: []byte("c"),
mimeType: "application/octet-stream",
},
{
name: "Offset1",
path: filePath,
offset: 1,
bytes: []byte("ontent"),
mimeType: "application/octet-stream",
},
{
name: "Limit1Offset2",
path: filePath,
limit: 1,
offset: 2,
bytes: []byte("n"),
mimeType: "application/octet-stream",
},
{
name: "Limit7Offset0",
path: filePath,
limit: 7,
offset: 0,
bytes: []byte("content"),
mimeType: "application/octet-stream",
},
{
name: "Limit100",
path: filePath,
limit: 100,
bytes: []byte("content"),
mimeType: "application/octet-stream",
},
{
name: "Offset7",
path: filePath,
offset: 7,
bytes: []byte{},
mimeType: "application/octet-stream",
},
{
name: "Offset100",
path: filePath,
offset: 100,
bytes: []byte{},
mimeType: "application/octet-stream",
},
{
name: "MimeTypePng",
path: imagePath,
bytes: []byte("not really an image"),
mimeType: "image/png",
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
t.Parallel()
ctx, cancel := context.WithTimeout(context.Background(), testutil.WaitLong)
defer cancel()
w := httptest.NewRecorder()
r := httptest.NewRequestWithContext(ctx, http.MethodGet, fmt.Sprintf("/read-file?path=%s&offset=%d&limit=%d", tt.path, tt.offset, tt.limit), nil)
api.Routes().ServeHTTP(w, r)
if tt.errCode != 0 {
got := &codersdk.Error{}
err := json.NewDecoder(w.Body).Decode(got)
require.NoError(t, err)
require.ErrorContains(t, got, tt.error)
require.Equal(t, tt.errCode, w.Code)
} else {
bytes, err := io.ReadAll(w.Body)
require.NoError(t, err)
require.Equal(t, tt.bytes, bytes)
require.Equal(t, tt.mimeType, w.Header().Get("Content-Type"))
require.Equal(t, http.StatusOK, w.Code)
}
})
}
}
func TestWriteFile(t *testing.T) {
t.Parallel()
tmpdir := os.TempDir()
noPermsFilePath := filepath.Join(tmpdir, "no-perms-file")
noPermsDirPath := filepath.Join(tmpdir, "no-perms-dir")
logger := slogtest.Make(t, &slogtest.Options{IgnoreErrors: true}).Leveled(slog.LevelDebug)
fs := newTestFs(afero.NewMemMapFs(), func(call, file string) error {
if file == noPermsFilePath || file == noPermsDirPath {
return os.ErrPermission
}
return nil
})
api := agentfiles.NewAPI(logger, fs, nil)
dirPath := filepath.Join(tmpdir, "directory")
err := fs.MkdirAll(dirPath, 0o755)
require.NoError(t, err)
filePath := filepath.Join(tmpdir, "file")
err = afero.WriteFile(fs, filePath, []byte("content"), 0o644)
require.NoError(t, err)
notDirErr := "not a directory"
if runtime.GOOS == "windows" {
notDirErr = "cannot find the path"
}
tests := []struct {
name string
path string
bytes []byte
errCode int
error string
}{
{
name: "NoPath",
path: "",
errCode: http.StatusBadRequest,
error: "\"path\" is required",
},
{
name: "RelativePathDotSlash",
path: "./relative",
errCode: http.StatusBadRequest,
error: "file path must be absolute",
},
{
name: "RelativePath",
path: "also-relative",
errCode: http.StatusBadRequest,
error: "file path must be absolute",
},
{
name: "NonExistent",
path: filepath.Join(tmpdir, "/nested/does-not-exist"),
bytes: []byte("now it does exist"),
},
{
name: "IsDir",
path: dirPath,
errCode: http.StatusBadRequest,
error: "is a directory",
},
{
name: "IsNotDir",
path: filepath.Join(filePath, "file2"),
errCode: http.StatusBadRequest,
error: notDirErr,
},
{
name: "NoPermissionsFile",
path: noPermsFilePath,
errCode: http.StatusForbidden,
error: "permission denied",
},
{
name: "NoPermissionsDir",
path: filepath.Join(noPermsDirPath, "within-no-perm-dir"),
errCode: http.StatusForbidden,
error: "permission denied",
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
t.Parallel()
ctx, cancel := context.WithTimeout(context.Background(), testutil.WaitLong)
defer cancel()
reader := bytes.NewReader(tt.bytes)
w := httptest.NewRecorder()
r := httptest.NewRequestWithContext(ctx, http.MethodPost, fmt.Sprintf("/write-file?path=%s", tt.path), reader)
api.Routes().ServeHTTP(w, r)
if tt.errCode != 0 {
got := &codersdk.Error{}
err := json.NewDecoder(w.Body).Decode(got)
require.NoError(t, err)
require.ErrorContains(t, got, tt.error)
require.Equal(t, tt.errCode, w.Code)
} else {
bytes, err := afero.ReadFile(fs, tt.path)
require.NoError(t, err)
require.Equal(t, tt.bytes, bytes)
require.Equal(t, http.StatusOK, w.Code)
}
})
}
}
func TestEditFiles(t *testing.T) {
t.Parallel()
tmpdir := os.TempDir()
noPermsFilePath := filepath.Join(tmpdir, "no-perms-file")
failRenameFilePath := filepath.Join(tmpdir, "fail-rename")
logger := slogtest.Make(t, &slogtest.Options{IgnoreErrors: true}).Leveled(slog.LevelDebug)
fs := newTestFs(afero.NewMemMapFs(), func(call, file string) error {
if file == noPermsFilePath {
return &os.PathError{
Op: call,
Path: file,
Err: os.ErrPermission,
}
} else if file == failRenameFilePath && call == "rename" {
return xerrors.New("rename failed")
}
return nil
})
api := agentfiles.NewAPI(logger, fs, nil)
dirPath := filepath.Join(tmpdir, "directory")
err := fs.MkdirAll(dirPath, 0o755)
require.NoError(t, err)
tests := []struct {
name string
contents map[string]string
edits []workspacesdk.FileEdits
expected map[string]string
errCode int
errors []string
}{
{
name: "NoFiles",
errCode: http.StatusBadRequest,
errors: []string{"must specify at least one file"},
},
{
name: "NoPath",
errCode: http.StatusBadRequest,
edits: []workspacesdk.FileEdits{
{
Edits: []workspacesdk.FileEdit{
{
Search: "foo",
Replace: "bar",
},
},
},
},
errors: []string{"\"path\" is required"},
},
{
name: "RelativePathDotSlash",
edits: []workspacesdk.FileEdits{
{
Path: "./relative",
Edits: []workspacesdk.FileEdit{
{
Search: "foo",
Replace: "bar",
},
},
},
},
errCode: http.StatusBadRequest,
errors: []string{"file path must be absolute"},
},
{
name: "RelativePath",
edits: []workspacesdk.FileEdits{
{
Path: "also-relative",
Edits: []workspacesdk.FileEdit{
{
Search: "foo",
Replace: "bar",
},
},
},
},
errCode: http.StatusBadRequest,
errors: []string{"file path must be absolute"},
},
{
name: "NoEdits",
edits: []workspacesdk.FileEdits{
{
Path: filepath.Join(tmpdir, "no-edits"),
},
},
errCode: http.StatusBadRequest,
errors: []string{"must specify at least one edit"},
},
{
name: "NonExistent",
edits: []workspacesdk.FileEdits{
{
Path: filepath.Join(tmpdir, "does-not-exist"),
Edits: []workspacesdk.FileEdit{
{
Search: "foo",
Replace: "bar",
},
},
},
},
errCode: http.StatusNotFound,
errors: []string{"file does not exist"},
},
{
name: "IsDir",
edits: []workspacesdk.FileEdits{
{
Path: dirPath,
Edits: []workspacesdk.FileEdit{
{
Search: "foo",
Replace: "bar",
},
},
},
},
errCode: http.StatusBadRequest,
errors: []string{"not a file"},
},
{
name: "NoPermissions",
edits: []workspacesdk.FileEdits{
{
Path: noPermsFilePath,
Edits: []workspacesdk.FileEdit{
{
Search: "foo",
Replace: "bar",
},
},
},
},
errCode: http.StatusForbidden,
errors: []string{"permission denied"},
},
{
name: "FailRename",
contents: map[string]string{failRenameFilePath: "foo bar"},
edits: []workspacesdk.FileEdits{
{
Path: failRenameFilePath,
Edits: []workspacesdk.FileEdit{
{
Search: "foo",
Replace: "bar",
},
},
},
},
errCode: http.StatusInternalServerError,
errors: []string{"rename failed"},
},
{
name: "Edit1",
contents: map[string]string{filepath.Join(tmpdir, "edit1"): "foo bar"},
edits: []workspacesdk.FileEdits{
{
Path: filepath.Join(tmpdir, "edit1"),
Edits: []workspacesdk.FileEdit{
{
Search: "foo",
Replace: "bar",
},
},
},
},
expected: map[string]string{filepath.Join(tmpdir, "edit1"): "bar bar"},
},
{
name: "EditEdit", // Edits affect previous edits.
contents: map[string]string{filepath.Join(tmpdir, "edit-edit"): "foo bar"},
edits: []workspacesdk.FileEdits{
{
Path: filepath.Join(tmpdir, "edit-edit"),
Edits: []workspacesdk.FileEdit{
{
Search: "foo",
Replace: "bar",
},
{
Search: "bar",
Replace: "qux",
},
},
},
},
expected: map[string]string{filepath.Join(tmpdir, "edit-edit"): "qux qux"},
},
{
name: "Multiline",
contents: map[string]string{filepath.Join(tmpdir, "multiline"): "foo\nbar\nbaz\nqux"},
edits: []workspacesdk.FileEdits{
{
Path: filepath.Join(tmpdir, "multiline"),
Edits: []workspacesdk.FileEdit{
{
Search: "bar\nbaz",
Replace: "frob",
},
},
},
},
expected: map[string]string{filepath.Join(tmpdir, "multiline"): "foo\nfrob\nqux"},
},
{
name: "Multifile",
contents: map[string]string{
filepath.Join(tmpdir, "file1"): "file 1",
filepath.Join(tmpdir, "file2"): "file 2",
filepath.Join(tmpdir, "file3"): "file 3",
},
edits: []workspacesdk.FileEdits{
{
Path: filepath.Join(tmpdir, "file1"),
Edits: []workspacesdk.FileEdit{
{
Search: "file",
Replace: "edited1",
},
},
},
{
Path: filepath.Join(tmpdir, "file2"),
Edits: []workspacesdk.FileEdit{
{
Search: "file",
Replace: "edited2",
},
},
},
{
Path: filepath.Join(tmpdir, "file3"),
Edits: []workspacesdk.FileEdit{
{
Search: "file",
Replace: "edited3",
},
},
},
},
expected: map[string]string{
filepath.Join(tmpdir, "file1"): "edited1 1",
filepath.Join(tmpdir, "file2"): "edited2 2",
filepath.Join(tmpdir, "file3"): "edited3 3",
},
},
{
name: "TrailingWhitespace",
contents: map[string]string{filepath.Join(tmpdir, "trailing-ws"): "foo \nbar\t\t\nbaz"},
edits: []workspacesdk.FileEdits{
{
Path: filepath.Join(tmpdir, "trailing-ws"),
Edits: []workspacesdk.FileEdit{
{
Search: "foo\nbar\nbaz",
Replace: "replaced",
},
},
},
},
expected: map[string]string{filepath.Join(tmpdir, "trailing-ws"): "replaced"},
},
{
name: "TabsVsSpaces",
contents: map[string]string{filepath.Join(tmpdir, "tabs-vs-spaces"): "\tif true {\n\t\tfoo()\n\t}"},
edits: []workspacesdk.FileEdits{
{
Path: filepath.Join(tmpdir, "tabs-vs-spaces"),
Edits: []workspacesdk.FileEdit{
{
// Search uses spaces but file uses tabs.
Search: " if true {\n foo()\n }",
Replace: "\tif true {\n\t\tbar()\n\t}",
},
},
},
},
expected: map[string]string{filepath.Join(tmpdir, "tabs-vs-spaces"): "\tif true {\n\t\tbar()\n\t}"},
},
{
name: "DifferentIndentDepth",
contents: map[string]string{filepath.Join(tmpdir, "indent-depth"): "\t\t\tdeep()\n\t\t\tnested()"},
edits: []workspacesdk.FileEdits{
{
Path: filepath.Join(tmpdir, "indent-depth"),
Edits: []workspacesdk.FileEdit{
{
// Search has wrong indent depth (1 tab instead of 3).
Search: "\tdeep()\n\tnested()",
Replace: "\t\t\tdeep()\n\t\t\tchanged()",
},
},
},
},
expected: map[string]string{filepath.Join(tmpdir, "indent-depth"): "\t\t\tdeep()\n\t\t\tchanged()"},
},
{
name: "ExactMatchPreferred",
contents: map[string]string{filepath.Join(tmpdir, "exact-preferred"): "hello world"},
edits: []workspacesdk.FileEdits{
{
Path: filepath.Join(tmpdir, "exact-preferred"),
Edits: []workspacesdk.FileEdit{
{
Search: "hello world",
Replace: "goodbye world",
},
},
},
},
expected: map[string]string{filepath.Join(tmpdir, "exact-preferred"): "goodbye world"},
},
{
name: "NoMatchStillSucceeds",
contents: map[string]string{filepath.Join(tmpdir, "no-match"): "original content"},
edits: []workspacesdk.FileEdits{
{
Path: filepath.Join(tmpdir, "no-match"),
Edits: []workspacesdk.FileEdit{
{
Search: "this does not exist in the file",
Replace: "whatever",
},
},
},
},
// File should remain unchanged.
expected: map[string]string{filepath.Join(tmpdir, "no-match"): "original content"},
},
{
name: "MixedWhitespaceMultiline",
contents: map[string]string{filepath.Join(tmpdir, "mixed-ws"): "func main() {\n\tresult := compute()\n\tfmt.Println(result)\n}"},
edits: []workspacesdk.FileEdits{
{
Path: filepath.Join(tmpdir, "mixed-ws"),
Edits: []workspacesdk.FileEdit{
{
// Search uses spaces, file uses tabs.
Search: " result := compute()\n fmt.Println(result)\n",
Replace: "\tresult := compute()\n\tlog.Println(result)\n",
},
},
},
},
expected: map[string]string{filepath.Join(tmpdir, "mixed-ws"): "func main() {\n\tresult := compute()\n\tlog.Println(result)\n}"},
},
{
name: "MultiError",
contents: map[string]string{
filepath.Join(tmpdir, "file8"): "file 8",
},
edits: []workspacesdk.FileEdits{
{
Path: noPermsFilePath,
Edits: []workspacesdk.FileEdit{
{
Search: "file",
Replace: "edited7",
},
},
},
{
Path: filepath.Join(tmpdir, "file8"),
Edits: []workspacesdk.FileEdit{
{
Search: "file",
Replace: "edited8",
},
},
},
{
Path: filepath.Join(tmpdir, "file9"),
Edits: []workspacesdk.FileEdit{
{
Search: "file",
Replace: "edited9",
},
},
},
},
expected: map[string]string{
filepath.Join(tmpdir, "file8"): "edited8 8",
},
// Higher status codes will override lower ones, so in this case the 404
// takes priority over the 403.
errCode: http.StatusNotFound,
errors: []string{
fmt.Sprintf("%s: permission denied", noPermsFilePath),
"file9: file does not exist",
},
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
t.Parallel()
ctx, cancel := context.WithTimeout(context.Background(), testutil.WaitLong)
defer cancel()
for path, content := range tt.contents {
err := afero.WriteFile(fs, path, []byte(content), 0o644)
require.NoError(t, err)
}
buf := bytes.NewBuffer(nil)
enc := json.NewEncoder(buf)
enc.SetEscapeHTML(false)
err := enc.Encode(workspacesdk.FileEditRequest{Files: tt.edits})
require.NoError(t, err)
w := httptest.NewRecorder()
r := httptest.NewRequestWithContext(ctx, http.MethodPost, "/edit-files", buf)
api.Routes().ServeHTTP(w, r)
if tt.errCode != 0 {
got := &codersdk.Error{}
err := json.NewDecoder(w.Body).Decode(got)
require.NoError(t, err)
for _, error := range tt.errors {
require.ErrorContains(t, got, error)
}
require.Equal(t, tt.errCode, w.Code)
} else {
require.Equal(t, http.StatusOK, w.Code)
}
for path, expect := range tt.expected {
b, err := afero.ReadFile(fs, path)
require.NoError(t, err)
require.Equal(t, expect, string(b))
}
})
}
}
func TestHandleWriteFile_ChatHeaders_UpdatesPathStore(t *testing.T) {
t.Parallel()
pathStore := agentgit.NewPathStore()
logger := slogtest.Make(t, nil)
fs := afero.NewMemMapFs()
api := agentfiles.NewAPI(logger, fs, pathStore)
testPath := filepath.Join(os.TempDir(), "test.txt")
chatID := uuid.New()
ancestorID := uuid.New()
ancestorJSON, _ := json.Marshal([]string{ancestorID.String()})
body := strings.NewReader("hello world")
req := httptest.NewRequest(http.MethodPost, "/write-file?path="+testPath, body)
req.Header.Set(workspacesdk.CoderChatIDHeader, chatID.String())
req.Header.Set(workspacesdk.CoderAncestorChatIDsHeader, string(ancestorJSON))
rr := httptest.NewRecorder()
r := chi.NewRouter()
r.Post("/write-file", api.HandleWriteFile)
r.ServeHTTP(rr, req)
require.Equal(t, http.StatusOK, rr.Code)
// Verify PathStore was updated for both chat and ancestor.
paths := pathStore.GetPaths(chatID)
require.Equal(t, []string{testPath}, paths)
ancestorPaths := pathStore.GetPaths(ancestorID)
require.Equal(t, []string{testPath}, ancestorPaths)
}
func TestHandleWriteFile_NoChatHeaders_NoPathStoreUpdate(t *testing.T) {
t.Parallel()
pathStore := agentgit.NewPathStore()
logger := slogtest.Make(t, nil)
fs := afero.NewMemMapFs()
api := agentfiles.NewAPI(logger, fs, pathStore)
testPath := filepath.Join(os.TempDir(), "test.txt")
body := strings.NewReader("hello world")
req := httptest.NewRequest(http.MethodPost, "/write-file?path="+testPath, body)
rr := httptest.NewRecorder()
r := chi.NewRouter()
r.Post("/write-file", api.HandleWriteFile)
r.ServeHTTP(rr, req)
require.Equal(t, http.StatusOK, rr.Code)
// PathStore should be globally empty since no chat headers were set.
require.Equal(t, 0, pathStore.Len())
}
func TestHandleWriteFile_Failure_NoPathStoreUpdate(t *testing.T) {
t.Parallel()
pathStore := agentgit.NewPathStore()
logger := slogtest.Make(t, nil)
fs := afero.NewMemMapFs()
api := agentfiles.NewAPI(logger, fs, pathStore)
chatID := uuid.New()
// Write to a relative path (should fail with 400).
body := strings.NewReader("hello world")
req := httptest.NewRequest(http.MethodPost, "/write-file?path=relative/path.txt", body)
req.Header.Set(workspacesdk.CoderChatIDHeader, chatID.String())
rr := httptest.NewRecorder()
r := chi.NewRouter()
r.Post("/write-file", api.HandleWriteFile)
r.ServeHTTP(rr, req)
require.Equal(t, http.StatusBadRequest, rr.Code)
// PathStore should NOT be updated on failure.
paths := pathStore.GetPaths(chatID)
require.Empty(t, paths)
}
func TestHandleEditFiles_ChatHeaders_UpdatesPathStore(t *testing.T) {
t.Parallel()
pathStore := agentgit.NewPathStore()
logger := slogtest.Make(t, nil)
fs := afero.NewMemMapFs()
api := agentfiles.NewAPI(logger, fs, pathStore)
testPath := filepath.Join(os.TempDir(), "test.txt")
// Create the file first.
require.NoError(t, afero.WriteFile(fs, testPath, []byte("hello"), 0o644))
chatID := uuid.New()
editReq := workspacesdk.FileEditRequest{
Files: []workspacesdk.FileEdits{
{
Path: testPath,
Edits: []workspacesdk.FileEdit{
{Search: "hello", Replace: "world"},
},
},
},
}
body, _ := json.Marshal(editReq)
req := httptest.NewRequest(http.MethodPost, "/edit-files", bytes.NewReader(body))
req.Header.Set("Content-Type", "application/json")
req.Header.Set(workspacesdk.CoderChatIDHeader, chatID.String())
rr := httptest.NewRecorder()
r := chi.NewRouter()
r.Post("/edit-files", api.HandleEditFiles)
r.ServeHTTP(rr, req)
require.Equal(t, http.StatusOK, rr.Code)
paths := pathStore.GetPaths(chatID)
require.Equal(t, []string{testPath}, paths)
}
func TestHandleEditFiles_Failure_NoPathStoreUpdate(t *testing.T) {
t.Parallel()
pathStore := agentgit.NewPathStore()
logger := slogtest.Make(t, nil)
fs := afero.NewMemMapFs()
api := agentfiles.NewAPI(logger, fs, pathStore)
chatID := uuid.New()
// Edit a non-existent file (should fail with 404).
editReq := workspacesdk.FileEditRequest{
Files: []workspacesdk.FileEdits{
{
Path: "/nonexistent/file.txt",
Edits: []workspacesdk.FileEdit{
{Search: "hello", Replace: "world"},
},
},
},
}
body, _ := json.Marshal(editReq)
req := httptest.NewRequest(http.MethodPost, "/edit-files", bytes.NewReader(body))
req.Header.Set("Content-Type", "application/json")
req.Header.Set(workspacesdk.CoderChatIDHeader, chatID.String())
rr := httptest.NewRecorder()
r := chi.NewRouter()
r.Post("/edit-files", api.HandleEditFiles)
r.ServeHTTP(rr, req)
require.NotEqual(t, http.StatusOK, rr.Code)
// PathStore should NOT be updated on failure.
paths := pathStore.GetPaths(chatID)
require.Empty(t, paths)
}
func TestReadFileLines(t *testing.T) {
t.Parallel()
tmpdir := os.TempDir()
noPermsFilePath := filepath.Join(tmpdir, "no-perms-lines")
logger := slogtest.Make(t, &slogtest.Options{IgnoreErrors: true}).Leveled(slog.LevelDebug)
fs := newTestFs(afero.NewMemMapFs(), func(call, file string) error {
if file == noPermsFilePath {
return os.ErrPermission
}
return nil
})
api := agentfiles.NewAPI(logger, fs, nil)
dirPath := filepath.Join(tmpdir, "a-directory-lines")
err := fs.MkdirAll(dirPath, 0o755)
require.NoError(t, err)
emptyFilePath := filepath.Join(tmpdir, "empty-file")
err = afero.WriteFile(fs, emptyFilePath, []byte(""), 0o644)
require.NoError(t, err)
basicFilePath := filepath.Join(tmpdir, "basic-file")
err = afero.WriteFile(fs, basicFilePath, []byte("line1\nline2\nline3"), 0o644)
require.NoError(t, err)
longLine := string(bytes.Repeat([]byte("x"), 1025))
longLineFilePath := filepath.Join(tmpdir, "long-line-file")
err = afero.WriteFile(fs, longLineFilePath, []byte(longLine), 0o644)
require.NoError(t, err)
largeFilePath := filepath.Join(tmpdir, "large-file")
err = afero.WriteFile(fs, largeFilePath, bytes.Repeat([]byte("x"), 1<<20+1), 0o644)
require.NoError(t, err)
tests := []struct {
name string
path string
offset int64
limit int64
expSuccess bool
expError string
expContent string
expTotal int
expRead int
expSize int64
// useCodersdk is set for cases where the handler returns
// codersdk.Response (query param validation) instead of ReadFileLinesResponse.
useCodersdk bool
}{
{
name: "NoPath",
path: "",
useCodersdk: true,
expError: "is required",
},
{
name: "RelativePath",
path: "relative/path",
expError: "file path must be absolute",
},
{
name: "NonExistent",
path: filepath.Join(tmpdir, "does-not-exist"),
expError: "file does not exist",
},
{
name: "IsDir",
path: dirPath,
expError: "not a file",
},
{
name: "NoPermissions",
path: noPermsFilePath,
expError: "permission denied",
},
{
name: "EmptyFile",
path: emptyFilePath,
expSuccess: true,
expTotal: 0,
expRead: 0,
expSize: 0,
},
{
name: "BasicRead",
path: basicFilePath,
expSuccess: true,
expContent: "1\tline1\n2\tline2\n3\tline3",
expTotal: 3,
expRead: 3,
expSize: int64(len("line1\nline2\nline3")),
},
{
name: "Offset2",
path: basicFilePath,
offset: 2,
expSuccess: true,
expContent: "2\tline2\n3\tline3",
expTotal: 3,
expRead: 2,
expSize: int64(len("line1\nline2\nline3")),
},
{
name: "Limit1",
path: basicFilePath,
limit: 1,
expSuccess: true,
expContent: "1\tline1",
expTotal: 3,
expRead: 1,
expSize: int64(len("line1\nline2\nline3")),
},
{
name: "Offset2Limit1",
path: basicFilePath,
offset: 2,
limit: 1,
expSuccess: true,
expContent: "2\tline2",
expTotal: 3,
expRead: 1,
expSize: int64(len("line1\nline2\nline3")),
},
{
name: "OffsetBeyondFile",
path: basicFilePath,
offset: 100,
expError: "offset 100 is beyond the file length of 3 lines",
},
{
name: "LongLineTruncation",
path: longLineFilePath,
expSuccess: true,
expContent: "1\t" + string(bytes.Repeat([]byte("x"), 1024)) + "... [truncated]",
expTotal: 1,
expRead: 1,
expSize: 1025,
},
{
name: "LargeFile",
path: largeFilePath,
expError: "exceeds the maximum",
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
t.Parallel()
ctx, cancel := context.WithTimeout(context.Background(), testutil.WaitLong)
defer cancel()
w := httptest.NewRecorder()
r := httptest.NewRequestWithContext(ctx, http.MethodGet, fmt.Sprintf("/read-file-lines?path=%s&offset=%d&limit=%d", tt.path, tt.offset, tt.limit), nil)
api.Routes().ServeHTTP(w, r)
if tt.useCodersdk {
// Query param validation errors return codersdk.Response.
require.Equal(t, http.StatusBadRequest, w.Code)
require.Contains(t, w.Body.String(), tt.expError)
return
}
var resp agentfiles.ReadFileLinesResponse
err := json.NewDecoder(w.Body).Decode(&resp)
require.NoError(t, err)
if tt.expSuccess {
require.Equal(t, http.StatusOK, w.Code)
require.True(t, resp.Success)
require.Equal(t, tt.expContent, resp.Content)
require.Equal(t, tt.expTotal, resp.TotalLines)
require.Equal(t, tt.expRead, resp.LinesRead)
require.Equal(t, tt.expSize, resp.FileSize)
} else {
require.Equal(t, http.StatusOK, w.Code)
require.False(t, resp.Success)
require.Contains(t, resp.Error, tt.expError)
}
})
}
}