mirror of
https://github.com/tailscale/tailscale.git
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57 lines
1.2 KiB
Go
57 lines
1.2 KiB
Go
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// 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 jsondb
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import (
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"log"
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"os"
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"path/filepath"
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"testing"
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"github.com/google/go-cmp/cmp"
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)
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func TestDB(t *testing.T) {
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dir, err := os.MkdirTemp("", "db-test")
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if err != nil {
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t.Fatal(err)
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}
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defer os.RemoveAll(dir)
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path := filepath.Join(dir, "db.json")
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db, err := Open[testDB](path)
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if err != nil {
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t.Fatalf("creating empty DB: %v", err)
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}
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if diff := cmp.Diff(db.Data, &testDB{}, cmp.AllowUnexported(testDB{})); diff != "" {
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t.Fatalf("unexpected empty DB content (-got+want):\n%s", diff)
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}
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db.Data.MyString = "test"
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db.Data.unexported = "don't keep"
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db.Data.AnInt = 42
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if err := db.Save(); err != nil {
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t.Fatalf("saving database: %v", err)
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}
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db2, err := Open[testDB](path)
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if err != nil {
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log.Fatalf("opening DB again: %v", err)
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}
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want := &testDB{
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MyString: "test",
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AnInt: 42,
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}
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if diff := cmp.Diff(db2.Data, want, cmp.AllowUnexported(testDB{})); diff != "" {
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t.Fatalf("unexpected saved DB content (-got+want):\n%s", diff)
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}
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}
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type testDB struct {
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MyString string
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unexported string
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AnInt int64
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}
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