1/*
2 * Copyright (C) 2015 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#include <memory>
18
19#include <base/compiler_specific.h>
20#include <base/files/file_enumerator.h>
21#include <base/files/file_util.h>
22#include <base/files/scoped_temp_dir.h>
23#include <gtest/gtest.h>
24
25#include "persistent_integer.h"
26
27const char kBackingFileName[] = "1.pibakf";
28
29using chromeos_metrics::PersistentInteger;
30
31class PersistentIntegerTest : public testing::Test {
32  void SetUp() override {
33    // Set testing mode.
34    ASSERT_TRUE(temp_dir_.CreateUniqueTempDir());
35  }
36
37 protected:
38  base::ScopedTempDir temp_dir_;
39};
40
41TEST_F(PersistentIntegerTest, BasicChecks) {
42  std::unique_ptr<PersistentInteger> pi(
43      new PersistentInteger(kBackingFileName, temp_dir_.path()));
44
45  // Test initialization.
46  EXPECT_EQ(0, pi->Get());
47  EXPECT_EQ(kBackingFileName, pi->Name());  // boring
48
49  // Test set and add.
50  pi->Set(2);
51  pi->Add(3);
52  EXPECT_EQ(5, pi->Get());
53
54  // Test persistence.
55  pi.reset(new PersistentInteger(kBackingFileName, temp_dir_.path()));
56  EXPECT_EQ(5, pi->Get());
57
58  // Test GetAndClear.
59  EXPECT_EQ(5, pi->GetAndClear());
60  EXPECT_EQ(pi->Get(), 0);
61
62  // Another persistence test.
63  pi.reset(new PersistentInteger(kBackingFileName, temp_dir_.path()));
64  EXPECT_EQ(0, pi->Get());
65}
66