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package store_test
import (
"errors"
"io"
"iter"
"os"
"reflect"
"slices"
"strings"
"syscall"
"testing"
_ "unsafe" // for go:linkname
"hakurei.app/check"
"hakurei.app/hst"
"hakurei.app/internal/store"
"hakurei.app/internal/stub"
)
// Made available here for direct validation of state entry files.
//
//go:linkname entryDecode hakurei.app/internal/store.entryDecode
func entryDecode(r io.Reader, p *hst.State) (hst.Enablements, error)
// Made available here for direct access to known segment handles.
//
//go:linkname newHandle hakurei.app/internal/store.newHandle
func newHandle(base *check.Absolute, identity int) *store.Handle
// Made available here to check open error handling behaviour.
//
//go:linkname open hakurei.app/internal/store.(*EntryHandle).open
func open(eh *store.EntryHandle, flag int, perm os.FileMode) (*os.File, error)
// Made available here to check the saveload cycle.
//
//go:linkname save hakurei.app/internal/store.(*EntryHandle).save
func save(eh *store.EntryHandle, state *hst.State) error
func TestStateEntryHandle(t *testing.T) {
t.Parallel()
t.Run("lockout", func(t *testing.T) {
t.Parallel()
wantErr := func() error { return stub.UniqueError(0) }
eh := store.EntryHandle{DecodeErr: wantErr(), Pathname: check.MustAbs("/proc/nonexistent")}
if _, err := open(&eh, -1, 0); !reflect.DeepEqual(err, wantErr()) {
t.Errorf("open: error = %v, want %v", err, wantErr())
}
if err := eh.Destroy(); !reflect.DeepEqual(err, wantErr()) {
t.Errorf("destroy: error = %v, want %v", err, wantErr())
}
if err := save(&eh, nil); !reflect.DeepEqual(err, wantErr()) {
t.Errorf("save: error = %v, want %v", err, wantErr())
}
if _, err := eh.Load(nil); !reflect.DeepEqual(err, wantErr()) {
t.Errorf("load: error = %v, want %v", err, wantErr())
}
})
t.Run("od", func(t *testing.T) {
t.Parallel()
{
eh := store.EntryHandle{Pathname: check.MustAbs(t.TempDir()).Append("entry")}
if f, err := open(&eh, os.O_CREATE|syscall.O_EXCL, 0); err != nil {
t.Fatalf("open: error = %v", err)
} else if err = f.Close(); err != nil {
t.Errorf("Close: error = %v", err)
}
if err := eh.Destroy(); err != nil {
t.Fatalf("destroy: error = %v", err)
}
}
t.Run("nonexistent", func(t *testing.T) {
t.Parallel()
eh := store.EntryHandle{Pathname: check.MustAbs("/proc/nonexistent")}
wantErrOpen := &hst.AppError{Step: "open state entry",
Err: &os.PathError{Op: "open", Path: "/proc/nonexistent", Err: syscall.ENOENT}}
if _, err := open(&eh, os.O_CREATE|syscall.O_EXCL, 0); !reflect.DeepEqual(err, wantErrOpen) {
t.Errorf("open: error = %#v, want %#v", err, wantErrOpen)
}
wantErrDestroy := &hst.AppError{Step: "destroy state entry",
Err: &os.PathError{Op: "remove", Path: "/proc/nonexistent", Err: syscall.ENOENT}}
if err := eh.Destroy(); !reflect.DeepEqual(err, wantErrDestroy) {
t.Errorf("destroy: error = %#v, want %#v", err, wantErrDestroy)
}
})
})
t.Run("saveload", func(t *testing.T) {
t.Parallel()
eh := store.EntryHandle{Pathname: check.MustAbs(t.TempDir()).Append("entry"),
ID: store.NewTemplateState().ID}
if err := save(&eh, store.NewTemplateState()); err != nil {
t.Fatalf("save: error = %v", err)
}
t.Run("validate", func(t *testing.T) {
t.Parallel()
t.Run("internal", func(t *testing.T) {
t.Parallel()
var got hst.State
if f, err := os.Open(eh.Pathname.String()); err != nil {
t.Fatal(err.Error())
} else if _, err = entryDecode(f, &got); err != nil {
t.Fatalf("entryDecode: error = %v", err)
} else if err = f.Close(); err != nil {
t.Fatal(f.Close())
}
if want := store.NewTemplateState(); !reflect.DeepEqual(&got, want) {
t.Errorf("entryDecode: %#v, want %#v", &got, want)
}
})
t.Run("load header only", func(t *testing.T) {
t.Parallel()
if et, err := eh.Load(nil); err != nil {
t.Fatalf("load: error = %v", err)
} else if want := store.NewTemplateState().Enablements.Unwrap(); et != want {
t.Errorf("load: et = %x, want %x", et, want)
}
})
t.Run("load", func(t *testing.T) {
t.Parallel()
var got hst.State
if _, err := eh.Load(&got); err != nil {
t.Fatalf("load: error = %v", err)
} else if want := store.NewTemplateState(); !reflect.DeepEqual(&got, want) {
t.Errorf("load: %#v, want %#v", &got, want)
}
})
t.Run("load inconsistent", func(t *testing.T) {
t.Parallel()
wantErr := &hst.AppError{Step: "validate state identifier", Err: os.ErrInvalid,
Msg: "state entry 00000000000000000000000000000000 has unexpected id aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"}
ehi := store.EntryHandle{Pathname: eh.Pathname}
if _, err := ehi.Load(new(hst.State)); !reflect.DeepEqual(err, wantErr) {
t.Errorf("load: error = %#v, want %#v", err, wantErr)
}
})
})
})
}
func TestSegmentHandle(t *testing.T) {
t.Parallel()
testCases := []struct {
name string
ents [2][]string
want func(newEh func(err error, name string) *store.EntryHandle) []*store.EntryHandle
ext func(t *testing.T, entries iter.Seq[*store.EntryHandle], n int)
}{
{"errors", [2][]string{{
"e81eb203b4190ac5c3842ef44d429945",
"lock",
"f0-invalid",
}, {
"f1-directory",
}}, func(newEh func(err error, name string) *store.EntryHandle) []*store.EntryHandle {
return []*store.EntryHandle{
newEh(nil, "e81eb203b4190ac5c3842ef44d429945"),
newEh(&hst.AppError{Step: "decode store segment entry",
Err: hst.IdentifierDecodeError{Err: hst.ErrIdentifierLength}}, "f0-invalid"),
newEh(&hst.AppError{Step: "read store segment entries",
Err: errors.New(`unexpected directory "f1-directory" in store`)}, "f1-directory"),
}
}, nil},
{"success", [2][]string{{
"e81eb203b4190ac5c3842ef44d429945",
"7958cfbb9272d9cf9cfd61c85afa13f1",
"d0b5f7446dd5bd3424ff2f7ac9cace1e",
"c8c8e2c4aea5c32fe47240ff8caa874e",
"fa0d30b249d80f155a1f80ceddcc32f2",
"lock",
}}, func(newEh func(err error, name string) *store.EntryHandle) []*store.EntryHandle {
return []*store.EntryHandle{
newEh(nil, "7958cfbb9272d9cf9cfd61c85afa13f1"),
newEh(nil, "c8c8e2c4aea5c32fe47240ff8caa874e"),
newEh(nil, "d0b5f7446dd5bd3424ff2f7ac9cace1e"),
newEh(nil, "e81eb203b4190ac5c3842ef44d429945"),
newEh(nil, "fa0d30b249d80f155a1f80ceddcc32f2"),
}
}, func(t *testing.T, entries iter.Seq[*store.EntryHandle], n int) {
if n != 5 {
t.Fatalf("Entries: n = %d", n)
}
// check partial drain
for range entries {
break
}
}},
}
for _, tc := range testCases {
t.Run(tc.name, func(t *testing.T) {
t.Parallel()
base := check.MustAbs(t.TempDir()).Append("store")
segment := base.Append("9")
if err := os.MkdirAll(segment.String(), 0700); err != nil {
t.Fatal(err.Error())
}
createEntries(t, segment, tc.ents)
var got []*store.EntryHandle
if entries, n, err := newHandle(base, 9).Entries(); err != nil {
t.Fatalf("Entries: error = %v", err)
} else {
got = slices.AppendSeq(make([]*store.EntryHandle, 0, n), entries)
if tc.ext != nil {
tc.ext(t, entries, n)
}
}
slices.SortFunc(got, func(a, b *store.EntryHandle) int { return strings.Compare(a.Pathname.String(), b.Pathname.String()) })
want := tc.want(func(err error, name string) *store.EntryHandle {
eh := store.EntryHandle{DecodeErr: err, Pathname: segment.Append(name)}
if err == nil {
if err = eh.UnmarshalText([]byte(name)); err != nil {
t.Fatalf("UnmarshalText: error = %v", err)
}
}
return &eh
})
if !reflect.DeepEqual(got, want) {
t.Errorf("Entries: %q, want %q", got, want)
}
})
}
t.Run("nonexistent", func(t *testing.T) {
var wantErr = &hst.AppError{Step: "read store segment entries", Err: &os.PathError{
Op: "open",
Path: "/proc/nonexistent",
Err: syscall.ENOENT,
}}
if _, _, err := (&store.Handle{
Identity: -0xbad,
Path: check.MustAbs("/proc/nonexistent"),
}).Entries(); !reflect.DeepEqual(err, wantErr) {
t.Fatalf("Entries: error = %#v, want %#v", err, wantErr)
}
})
}
// createEntries creates file and directory entries in the specified prefix.
func createEntries(t *testing.T, prefix *check.Absolute, ents [2][]string) {
for _, s := range ents[0] {
if f, err := os.OpenFile(prefix.Append(s).String(), os.O_CREATE|os.O_EXCL, 0600); err != nil {
t.Fatal(err.Error())
} else if err = f.Close(); err != nil {
t.Fatal(err.Error())
}
}
for _, s := range ents[1] {
if err := os.Mkdir(prefix.Append(s).String(), 0700); err != nil {
t.Fatal(err.Error())
}
}
}
|
