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518f6cee63
Otherwise it would log warnings about an empty file. ``` stores.go:138: store.NewFileStore("/tmp/3777352782"): file empty; treating it like a missing file [warning] ``` Signed-off-by: Maisem Ali <maisem@tailscale.com>
181 lines
3.8 KiB
Go
181 lines
3.8 KiB
Go
// Copyright (c) 2022 Tailscale Inc & AUTHORS All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package store
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import (
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"path/filepath"
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"testing"
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"tailscale.com/ipn"
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"tailscale.com/ipn/store/mem"
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"tailscale.com/tstest"
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"tailscale.com/types/logger"
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)
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func TestNewStore(t *testing.T) {
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regOnce.Do(registerDefaultStores)
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t.Cleanup(func() {
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knownStores = map[string]Provider{}
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registerDefaultStores()
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})
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knownStores = map[string]Provider{}
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type store1 struct {
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ipn.StateStore
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path string
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}
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type store2 struct {
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ipn.StateStore
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path string
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}
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Register("arn:", func(_ logger.Logf, path string) (ipn.StateStore, error) {
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return &store1{new(mem.Store), path}, nil
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})
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Register("kube:", func(_ logger.Logf, path string) (ipn.StateStore, error) {
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return &store2{new(mem.Store), path}, nil
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})
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Register("mem:", func(_ logger.Logf, path string) (ipn.StateStore, error) {
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return new(mem.Store), nil
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})
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path := "mem:abcd"
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if s, err := New(t.Logf, path); err != nil {
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t.Fatalf("%q: %v", path, err)
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} else if _, ok := s.(*mem.Store); !ok {
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t.Fatalf("%q: got: %T, want: %T", path, s, new(mem.Store))
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}
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path = "arn:foo"
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if s, err := New(t.Logf, path); err != nil {
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t.Fatalf("%q: %v", path, err)
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} else if _, ok := s.(*store1); !ok {
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t.Fatalf("%q: got: %T, want: %T", path, s, new(store1))
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}
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path = "kube:abcd"
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if s, err := New(t.Logf, path); err != nil {
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t.Fatalf("%q: %v", path, err)
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} else if _, ok := s.(*store2); !ok {
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t.Fatalf("%q: got: %T, want: %T", path, s, new(store2))
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}
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path = filepath.Join(t.TempDir(), "state")
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if s, err := New(t.Logf, path); err != nil {
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t.Fatalf("%q: %v", path, err)
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} else if _, ok := s.(*FileStore); !ok {
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t.Fatalf("%q: got: %T, want: %T", path, s, new(FileStore))
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}
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}
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func testStoreSemantics(t *testing.T, store ipn.StateStore) {
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t.Helper()
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tests := []struct {
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// if true, data is data to write. If false, data is expected
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// output of read.
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write bool
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id ipn.StateKey
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data string
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// If write=false, true if we expect a not-exist error.
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notExists bool
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}{
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{
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id: "foo",
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notExists: true,
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},
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{
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write: true,
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id: "foo",
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data: "bar",
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},
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{
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id: "foo",
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data: "bar",
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},
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{
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id: "baz",
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notExists: true,
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},
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{
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write: true,
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id: "baz",
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data: "quux",
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},
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{
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id: "foo",
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data: "bar",
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},
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{
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id: "baz",
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data: "quux",
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},
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}
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for _, test := range tests {
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if test.write {
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if err := store.WriteState(test.id, []byte(test.data)); err != nil {
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t.Errorf("writing %q to %q: %v", test.data, test.id, err)
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}
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} else {
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bs, err := store.ReadState(test.id)
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if err != nil {
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if test.notExists && err == ipn.ErrStateNotExist {
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continue
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}
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t.Errorf("reading %q: %v", test.id, err)
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continue
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}
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if string(bs) != test.data {
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t.Errorf("reading %q: got %q, want %q", test.id, string(bs), test.data)
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}
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}
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}
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}
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func TestMemoryStore(t *testing.T) {
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tstest.PanicOnLog()
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store := new(mem.Store)
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testStoreSemantics(t, store)
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}
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func TestFileStore(t *testing.T) {
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tstest.PanicOnLog()
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dir := t.TempDir()
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path := filepath.Join(dir, "test-file-store.conf")
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store, err := NewFileStore(nil, path)
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if err != nil {
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t.Fatalf("creating file store failed: %v", err)
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}
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testStoreSemantics(t, store)
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// Build a brand new file store and check that both IDs written
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// above are still there.
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store, err = NewFileStore(nil, path)
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if err != nil {
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t.Fatalf("creating second file store failed: %v", err)
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}
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expected := map[ipn.StateKey]string{
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"foo": "bar",
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"baz": "quux",
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}
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for key, want := range expected {
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bs, err := store.ReadState(key)
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if err != nil {
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t.Errorf("reading %q (2nd store): %v", key, err)
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continue
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}
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if string(bs) != want {
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t.Errorf("reading %q (2nd store): got %q, want %q", key, bs, want)
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}
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}
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}
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