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
27 const char kBackingFileName[] = "1.pibakf";
28
29 using chromeos_metrics::PersistentInteger;
30
31 class PersistentIntegerTest : public testing::Test {
SetUp()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
TEST_F(PersistentIntegerTest,BasicChecks)41 TEST_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