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// Copyright (c) Tailscale Inc & contributors
// SPDX-License-Identifier: BSD-3-Clause
package store
import (
"maps"
"path/filepath"
"testing"
"tailscale.com/ipn"
"tailscale.com/ipn/store/mem"
"tailscale.com/tstest"
"tailscale.com/types/logger"
)
func TestNewStore(t *testing.T) {
oldKnownStores := maps.Clone(knownStores)
t.Cleanup(func() {
knownStores = oldKnownStores
})
knownStores = map[string]Provider{}
type store1 struct {
ipn.StateStore
path string
}
type store2 struct {
ipn.StateStore
path string
}
Register("arn:", func(_ logger.Logf, path string) (ipn.StateStore, error) {
return &store1{new(mem.Store), path}, nil
})
Register("kube:", func(_ logger.Logf, path string) (ipn.StateStore, error) {
return &store2{new(mem.Store), path}, nil
})
Register("mem:", func(_ logger.Logf, path string) (ipn.StateStore, error) {
return new(mem.Store), nil
})
path := "mem:abcd"
if s, err := New(t.Logf, path); err != nil {
t.Fatalf("%q: %v", path, err)
} else if _, ok := s.(*mem.Store); !ok {
t.Fatalf("%q: got: %T, want: %T", path, s, new(mem.Store))
}
path = "arn:foo"
if s, err := New(t.Logf, path); err != nil {
t.Fatalf("%q: %v", path, err)
} else if _, ok := s.(*store1); !ok {
t.Fatalf("%q: got: %T, want: %T", path, s, new(store1))
}
path = "kube:abcd"
if s, err := New(t.Logf, path); err != nil {
t.Fatalf("%q: %v", path, err)
} else if _, ok := s.(*store2); !ok {
t.Fatalf("%q: got: %T, want: %T", path, s, new(store2))
}
path = filepath.Join(t.TempDir(), "state")
if s, err := New(t.Logf, path); err != nil {
t.Fatalf("%q: %v", path, err)
} else if _, ok := s.(*FileStore); !ok {
t.Fatalf("%q: got: %T, want: %T", path, s, new(FileStore))
}
}
func testStoreSemantics(t *testing.T, store ipn.StateStore) {
t.Helper()
tests := []struct {
// if true, data is data to write. If false, data is expected
// output of read.
write bool
id ipn.StateKey
data string
// If write=false, true if we expect a not-exist error.
notExists bool
}{
{
id: "foo",
notExists: true,
},
{
write: true,
id: "foo",
data: "bar",
},
{
id: "foo",
data: "bar",
},
{
id: "baz",
notExists: true,
},
{
write: true,
id: "baz",
data: "quux",
},
{
id: "foo",
data: "bar",
},
{
id: "baz",
data: "quux",
},
}
for _, test := range tests {
if test.write {
if err := store.WriteState(test.id, []byte(test.data)); err != nil {
t.Errorf("writing %q to %q: %v", test.data, test.id, err)
}
} else {
bs, err := store.ReadState(test.id)
if err != nil {
if test.notExists && err == ipn.ErrStateNotExist {
continue
}
t.Errorf("reading %q: %v", test.id, err)
continue
}
if string(bs) != test.data {
t.Errorf("reading %q: got %q, want %q", test.id, string(bs), test.data)
}
}
}
}
func TestMemoryStore(t *testing.T) {
tstest.PanicOnLog()
store := new(mem.Store)
testStoreSemantics(t, store)
}
func TestFileStore(t *testing.T) {
tstest.PanicOnLog()
dir := t.TempDir()
path := filepath.Join(dir, "test-file-store.conf")
store, err := NewFileStore(nil, path)
if err != nil {
t.Fatalf("creating file store failed: %v", err)
}
testStoreSemantics(t, store)
// Build a brand new file store and check that both IDs written
// above are still there.
store, err = NewFileStore(nil, path)
if err != nil {
t.Fatalf("creating second file store failed: %v", err)
}
expected := map[ipn.StateKey]string{
"foo": "bar",
"baz": "quux",
}
for key, want := range expected {
bs, err := store.ReadState(key)
if err != nil {
t.Errorf("reading %q (2nd store): %v", key, err)
continue
}
if string(bs) != want {
t.Errorf("reading %q (2nd store): got %q, want %q", key, bs, want)
}
}
}
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