1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
|
// Copyright (c) 2011 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "base/files/file_util.h"
#include "base/files/scoped_temp_dir.h"
#include "sql/connection.h"
#include "sql/correct_sql_test_base.h"
#include "sql/statement.h"
#include "sql/transaction.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "third_party/sqlite/sqlite3.h"
class SQLTransactionTest : public sql::SQLTestBase {
public:
void SetUp() override {
SQLTestBase::SetUp();
ASSERT_TRUE(db().Execute("CREATE TABLE foo (a, b)"));
}
// Returns the number of rows in table "foo".
int CountFoo() {
sql::Statement count(db().GetUniqueStatement("SELECT count(*) FROM foo"));
count.Step();
return count.ColumnInt(0);
}
};
TEST_F(SQLTransactionTest, Commit) {
{
sql::Transaction t(&db());
EXPECT_FALSE(t.is_open());
EXPECT_TRUE(t.Begin());
EXPECT_TRUE(t.is_open());
EXPECT_TRUE(db().Execute("INSERT INTO foo (a, b) VALUES (1, 2)"));
t.Commit();
EXPECT_FALSE(t.is_open());
}
EXPECT_EQ(1, CountFoo());
}
TEST_F(SQLTransactionTest, Rollback) {
// Test some basic initialization, and that rollback runs when you exit the
// scope.
{
sql::Transaction t(&db());
EXPECT_FALSE(t.is_open());
EXPECT_TRUE(t.Begin());
EXPECT_TRUE(t.is_open());
EXPECT_TRUE(db().Execute("INSERT INTO foo (a, b) VALUES (1, 2)"));
}
// Nothing should have been committed since it was implicitly rolled back.
EXPECT_EQ(0, CountFoo());
// Test explicit rollback.
sql::Transaction t2(&db());
EXPECT_FALSE(t2.is_open());
EXPECT_TRUE(t2.Begin());
EXPECT_TRUE(db().Execute("INSERT INTO foo (a, b) VALUES (1, 2)"));
t2.Rollback();
EXPECT_FALSE(t2.is_open());
// Nothing should have been committed since it was explicitly rolled back.
EXPECT_EQ(0, CountFoo());
}
// Rolling back any part of a transaction should roll back all of them.
TEST_F(SQLTransactionTest, NestedRollback) {
EXPECT_EQ(0, db().transaction_nesting());
// Outermost transaction.
{
sql::Transaction outer(&db());
EXPECT_TRUE(outer.Begin());
EXPECT_EQ(1, db().transaction_nesting());
// The first inner one gets committed.
{
sql::Transaction inner1(&db());
EXPECT_TRUE(inner1.Begin());
EXPECT_TRUE(db().Execute("INSERT INTO foo (a, b) VALUES (1, 2)"));
EXPECT_EQ(2, db().transaction_nesting());
inner1.Commit();
EXPECT_EQ(1, db().transaction_nesting());
}
// One row should have gotten inserted.
EXPECT_EQ(1, CountFoo());
// The second inner one gets rolled back.
{
sql::Transaction inner2(&db());
EXPECT_TRUE(inner2.Begin());
EXPECT_TRUE(db().Execute("INSERT INTO foo (a, b) VALUES (1, 2)"));
EXPECT_EQ(2, db().transaction_nesting());
inner2.Rollback();
EXPECT_EQ(1, db().transaction_nesting());
}
// A third inner one will fail in Begin since one has already been rolled
// back.
EXPECT_EQ(1, db().transaction_nesting());
{
sql::Transaction inner3(&db());
EXPECT_FALSE(inner3.Begin());
EXPECT_EQ(1, db().transaction_nesting());
}
}
EXPECT_EQ(0, db().transaction_nesting());
EXPECT_EQ(0, CountFoo());
}
|
