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package modload
import (
"archive/zip"
"bytes"
"context"
"fmt"
"io"
"io/fs"
"path/filepath"
"strings"
"testing"
"cuelabs.dev/go/oci/ociregistry/ociclient"
"github.com/go-quicktest/qt"
"github.com/google/go-cmp/cmp"
"golang.org/x/tools/txtar"
"cuelang.org/go/internal/registrytest"
"cuelang.org/go/mod/modfile"
"cuelang.org/go/mod/modregistry"
"cuelang.org/go/mod/module"
)
func TestTidy(t *testing.T) {
files, err := filepath.Glob("testdata/tidy/*.txtar")
qt.Assert(t, qt.IsNil(err))
for _, f := range files {
t.Run(f, func(t *testing.T) {
ar, err := txtar.ParseFile(f)
qt.Assert(t, qt.IsNil(err))
tfs, err := txtar.FS(ar)
qt.Assert(t, qt.IsNil(err))
reg := newRegistry(t, tfs)
want, err := fs.ReadFile(tfs, "want")
qt.Assert(t, qt.IsNil(err))
err = CheckTidy(context.Background(), tfs, ".", reg)
wantCheckTidyError := stringFromFile(tfs, "tidy-check-error")
if wantCheckTidyError == "" {
qt.Check(t, qt.IsNil(err))
} else {
qt.Check(t, qt.ErrorMatches(err, wantCheckTidyError))
}
var out strings.Builder
var tidyFile []byte
mf, err := Tidy(context.Background(), tfs, ".", reg)
if err != nil {
fmt.Fprintf(&out, "error: %v\n", err)
} else {
tidyFile, err = mf.Format()
qt.Assert(t, qt.IsNil(err))
out.Write(tidyFile)
}
if diff := cmp.Diff(string(want), out.String()); diff != "" {
t.Log("actual result:\n", out.String())
t.Fatalf("unexpected results (-want +got):\n%s", diff)
}
// Ensure that CheckTidy does not error after a successful Tidy.
// We make a new txtar FS given that an FS is read-only.
if len(tidyFile) > 0 {
for i := range ar.Files {
file := &ar.Files[i]
if file.Name == "cue.mod/module.cue" {
file.Data = []byte(out.String())
}
}
tfs, err := txtar.FS(ar)
qt.Assert(t, qt.IsNil(err))
err = CheckTidy(context.Background(), tfs, ".", reg)
qt.Check(t, qt.IsNil(err), qt.Commentf("CheckTidy after a successful Tidy should not fail"))
}
})
}
}
func stringFromFile(fsys fs.FS, file string) string {
data, _ := fs.ReadFile(fsys, file)
return strings.TrimSpace(string(data))
}
func newRegistry(t *testing.T, fsys fs.FS) Registry {
fsys, err := fs.Sub(fsys, "_registry")
qt.Assert(t, qt.IsNil(err))
regSrv, err := registrytest.New(fsys, "")
qt.Assert(t, qt.IsNil(err))
t.Cleanup(regSrv.Close)
regOCI, err := ociclient.New(regSrv.Host(), &ociclient.Options{
Insecure: true,
})
qt.Assert(t, qt.IsNil(err))
return ®istryImpl{modregistry.NewClient(regOCI)}
}
type registryImpl struct {
reg *modregistry.Client
}
func (r *registryImpl) Requirements(ctx context.Context, mv module.Version) ([]module.Version, error) {
m, err := r.reg.GetModule(ctx, mv)
if err != nil {
return nil, err
}
data, err := m.ModuleFile(ctx)
if err != nil {
return nil, fmt.Errorf("cannot get module file from %v: %v", m, err)
}
mf, err := modfile.Parse(data, mv.String())
if err != nil {
return nil, fmt.Errorf("cannot parse module file from %v: %v", m, err)
}
return mf.DepVersions(), nil
}
// getModContents downloads the module with the given version
// and returns the directory where it's stored.
func (c *registryImpl) Fetch(ctx context.Context, mv module.Version) (module.SourceLoc, error) {
m, err := c.reg.GetModule(ctx, mv)
if err != nil {
return module.SourceLoc{}, err
}
r, err := m.GetZip(ctx)
if err != nil {
return module.SourceLoc{}, err
}
defer r.Close()
zipData, err := io.ReadAll(r)
if err != nil {
return module.SourceLoc{}, err
}
zipr, err := zip.NewReader(bytes.NewReader(zipData), int64(len(zipData)))
if err != nil {
return module.SourceLoc{}, err
}
return module.SourceLoc{
FS: zipr,
Dir: ".",
}, nil
}
func (r *registryImpl) ModuleVersions(ctx context.Context, mpath string) ([]string, error) {
versions, err := r.reg.ModuleVersions(ctx, mpath)
if err != nil {
return nil, fmt.Errorf("cannot obtain versions for module %q: %v", mpath, err)
}
return versions, nil
}
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