forked from npgsql/npgsql
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathTransactionTests.cs
More file actions
336 lines (301 loc) · 13.3 KB
/
TransactionTests.cs
File metadata and controls
336 lines (301 loc) · 13.3 KB
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
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
#region License
// The PostgreSQL License
//
// Copyright (C) 2015 The Npgsql Development Team
//
// Permission to use, copy, modify, and distribute this software and its
// documentation for any purpose, without fee, and without a written
// agreement is hereby granted, provided that the above copyright notice
// and this paragraph and the following two paragraphs appear in all copies.
//
// IN NO EVENT SHALL THE NPGSQL DEVELOPMENT TEAM BE LIABLE TO ANY PARTY
// FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES,
// INCLUDING LOST PROFITS, ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS
// DOCUMENTATION, EVEN IF THE NPGSQL DEVELOPMENT TEAM HAS BEEN ADVISED OF
// THE POSSIBILITY OF SUCH DAMAGE.
//
// THE NPGSQL DEVELOPMENT TEAM SPECIFICALLY DISCLAIMS ANY WARRANTIES,
// INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
// AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
// ON AN "AS IS" BASIS, AND THE NPGSQL DEVELOPMENT TEAM HAS NO OBLIGATIONS
// TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
#endregion
using System;
using System.Collections.Generic;
using System.Data;
using System.Data.Common;
using System.Linq;
using System.Text;
using Npgsql;
using NUnit.Framework;
namespace Npgsql.Tests
{
public class TransactionTests : TestBase
{
[Test, Description("Basic insert within a committed transaction")]
public void Commit()
{
ExecuteNonQuery("CREATE TEMP TABLE data (name TEXT)");
var tx = Conn.BeginTransaction();
ExecuteNonQuery("INSERT INTO data (name) VALUES ('X')", tx: tx);
tx.Commit();
Assert.That(ExecuteScalar("SELECT COUNT(*) FROM data"), Is.EqualTo(1));
}
[Test, Description("Basic insert within a rolled back transaction")]
public void Rollback([Values(PrepareOrNot.NotPrepared, PrepareOrNot.Prepared)] PrepareOrNot prepare)
{
ExecuteNonQuery("CREATE TEMP TABLE data (name TEXT)");
var tx = Conn.BeginTransaction();
var cmd = new NpgsqlCommand("INSERT INTO data (name) VALUES ('X')", Conn, tx);
if (prepare == PrepareOrNot.Prepared) { cmd.Prepare(); }
cmd.ExecuteNonQuery();
Assert.That(ExecuteScalar("SELECT COUNT(*) FROM data"), Is.EqualTo(1));
tx.Rollback();
Assert.That(tx.Connection, Is.Null);
Assert.That(ExecuteScalar("SELECT COUNT(*) FROM data"), Is.EqualTo(0));
}
[Test, Description("Dispose a transaction in progress, should roll back")]
public void RollbackOnDispose()
{
ExecuteNonQuery("CREATE TEMP TABLE data (name TEXT)");
var tx = Conn.BeginTransaction();
ExecuteNonQuery("INSERT INTO data (name) VALUES ('X')", tx: tx);
tx.Dispose();
Assert.That(tx.Connection, Is.Null);
Assert.That(ExecuteScalar("SELECT COUNT(*) FROM data"), Is.EqualTo(0));
}
[Test]
public void RollbackOnClose()
{
ExecuteNonQuery("DROP TABLE IF EXISTS rollback_on_close");
ExecuteNonQuery("CREATE TABLE rollback_on_close (name TEXT)");
NpgsqlTransaction tx;
using (var conn = new NpgsqlConnection(ConnectionString))
{
conn.Open();
tx = conn.BeginTransaction();
ExecuteNonQuery("INSERT INTO rollback_on_close (name) VALUES ('X')", conn, tx);
}
Assert.That(tx.Connection, Is.Null);
Assert.That(ExecuteScalar("SELECT COUNT(*) FROM rollback_on_close"), Is.EqualTo(0));
}
[Test, Description("Intentionally generates an error, putting us in a failed transaction block. Rolls back.")]
public void RollbackFailed()
{
ExecuteNonQuery("CREATE TEMP TABLE data (name TEXT)");
var tx = Conn.BeginTransaction();
ExecuteNonQuery("INSERT INTO data (name) VALUES ('X')", tx: tx);
Assert.That(() => ExecuteNonQuery("BAD QUERY"), Throws.Exception);
tx.Rollback();
Assert.That(tx.Connection, Is.Null);
Assert.That(ExecuteScalar("SELECT COUNT(*) FROM data"), Is.EqualTo(0));
}
[Test, Description("Commits an empty transaction")]
public void EmptyCommit()
{
Conn.BeginTransaction().Commit();
}
[Test, Description("Rolls back an empty transaction")]
public void EmptyRollback()
{
Conn.BeginTransaction().Rollback();
}
[Test, Description("Tests that the isolation levels are properly supported")]
public void IsolationLevels()
{
foreach (var level in new[] {
IsolationLevel.Unspecified,
IsolationLevel.ReadCommitted,
IsolationLevel.ReadUncommitted,
IsolationLevel.RepeatableRead,
IsolationLevel.Serializable,
IsolationLevel.Snapshot,
}) {
var tx = Conn.BeginTransaction(level);
tx.Commit();
}
foreach (var level in new[] {
IsolationLevel.Chaos,
}) {
var level2 = level;
Assert.That(() => Conn.BeginTransaction(level2), Throws.Exception.TypeOf<NotSupportedException>());
}
}
[Test, Description("Rollback of an already rolled back transaction")]
public void RollbackTwice()
{
var transaction = Conn.BeginTransaction();
transaction.Rollback();
Assert.That(() => transaction.Rollback(), Throws.Exception.TypeOf<InvalidOperationException>());
}
[Test, Description("Makes sure the creating a transaction via DbConnection sets the proper isolation level")]
[IssueLink("https://github.com/npgsql/npgsql/issues/559")]
public void DbConnectionDefaultIsolation()
{
var dbConn = (DbConnection)Conn;
var tx = dbConn.BeginTransaction();
Assert.That(tx.IsolationLevel, Is.EqualTo(IsolationLevel.ReadCommitted));
tx.Rollback();
tx = dbConn.BeginTransaction(IsolationLevel.Unspecified);
Assert.That(tx.IsolationLevel, Is.EqualTo(IsolationLevel.ReadCommitted));
tx.Rollback();
}
[Test, Description("Makes sure that transactions started in SQL work")]
public void ViaSql()
{
ExecuteNonQuery("CREATE TEMP TABLE data (name TEXT)");
ExecuteNonQuery("BEGIN");
ExecuteNonQuery("INSERT INTO data (name) VALUES ('X')");
ExecuteNonQuery("ROLLBACK");
Assert.That(ExecuteScalar("SELECT COUNT(*) FROM data"), Is.EqualTo(0));
}
[Test]
public void RollbackFailedTransactionWithTimeout()
{
var tx = Conn.BeginTransaction();
using (var cmd = new NpgsqlCommand("BAD QUERY", Conn, tx))
{
Assert.That(cmd.CommandTimeout != 1);
cmd.CommandTimeout = 1;
try
{
cmd.ExecuteScalar();
Assert.Fail();
}
catch (NpgsqlException)
{
// Timeout at the backend is now 1
tx.Rollback();
Assert.That(ExecuteScalar("SELECT 1"), Is.EqualTo(1));
}
}
}
[Test, Description("If a custom command timeout is set, a failed transaction could not be rollbacked to a previous savepoint")]
[IssueLink("https://github.com/npgsql/npgsql/issues/363")]
[IssueLink("https://github.com/npgsql/npgsql/issues/184")]
public void FailedTransactionCantRollbackToSavepointWithCustomTimeout()
{
var transaction = Conn.BeginTransaction();
transaction.Save("TestSavePoint");
using (var command = new NpgsqlCommand("SELECT unknown_thing", Conn)) {
command.CommandTimeout = 1;
try {
command.ExecuteScalar();
} catch (NpgsqlException) {
transaction.Rollback("TestSavePoint");
Assert.That(ExecuteScalar("SELECT 1"), Is.EqualTo(1));
}
}
}
[Test, Description("Closes a (pooled) connection with a failed transaction and a custom timeout")]
[IssueLink("https://github.com/npgsql/npgsql/issues/719")]
public void FailedTransactionOnCloseWithCustom()
{
var csb = new NpgsqlConnectionStringBuilder(ConnectionString) { Pooling = true };
using (var conn = new NpgsqlConnection(csb))
{
conn.Open();
var backendProcessId = conn.ProcessID;
conn.BeginTransaction();
using (var badCmd = new NpgsqlCommand("SEL", conn))
{
badCmd.CommandTimeout = NpgsqlCommand.DefaultTimeout + 1;
Assert.That(() => badCmd.ExecuteNonQuery(), Throws.Exception.TypeOf<NpgsqlException>());
}
// Connection now in failed transaction state, and a custom timeout is in place
conn.Close();
conn.Open();
Assert.That(conn.ProcessID, Is.EqualTo(backendProcessId));
Assert.That(ExecuteScalar("SELECT 1", conn), Is.EqualTo(1));
}
}
[Test]
[IssueLink("https://github.com/npgsql/npgsql/issues/555")]
public void TransactionOnRecycledConnection()
{
var conn = new NpgsqlConnection(ConnectionString);
conn.Open();
var prevConnectorId = conn.Connector.Id;
conn.Close();
conn.Open();
Assert.That(conn.Connector.Id, Is.EqualTo(prevConnectorId), "Connection pool returned a different connector, can't test");
var tx = conn.BeginTransaction();
ExecuteScalar("SELECT 1", conn);
tx.Commit();
conn.Close();
}
[Test]
public void Savepoint()
{
ExecuteNonQuery("CREATE TEMP TABLE data (name TEXT)");
const string name = "theSavePoint";
using (var tx = Conn.BeginTransaction())
{
tx.Save(name);
ExecuteNonQuery("INSERT INTO data (name) VALUES ('savepointtest')", tx: tx);
Assert.That(ExecuteScalar("SELECT COUNT(*) FROM data", tx: tx), Is.EqualTo(1));
tx.Rollback(name);
Assert.That(ExecuteScalar("SELECT COUNT(*) FROM data", tx: tx), Is.EqualTo(0));
ExecuteNonQuery("INSERT INTO data (name) VALUES ('savepointtest')", tx: tx);
tx.Release(name);
Assert.That(ExecuteScalar("SELECT COUNT(*) FROM data", tx: tx), Is.EqualTo(1));
tx.Commit();
}
Assert.That(ExecuteScalar("SELECT COUNT(*) FROM data"), Is.EqualTo(1));
}
[Test]
public void SavepointWithSemicolon()
{
using (var tx = Conn.BeginTransaction())
Assert.That(() => tx.Save("a;b"), Throws.Exception.TypeOf<ArgumentException>());
}
[Test]
[IssueLink("https://github.com/npgsql/npgsql/issues/765")]
public void PrependedRollbackWhileStartingNewTransaction()
{
var connString = new NpgsqlConnectionStringBuilder(ConnectionString) {
CommandTimeout = 600,
InternalCommandTimeout = 30
};
int backendId;
using (var conn = new NpgsqlConnection(connString))
{
conn.Open();
backendId = conn.Connector.BackendProcessId;
conn.BeginTransaction();
ExecuteNonQuery("SELECT 1", conn);
}
// Connector is back in the pool with a queued ROLLBACK
using (var conn = new NpgsqlConnection(connString))
{
conn.Open();
Assert.That(conn.Connector.BackendProcessId, Is.EqualTo(backendId));
var tx = conn.BeginTransaction();
// We've captured the transaction instance, a new begin transaction is now enqueued after the rollback
ExecuteNonQuery("SELECT 1", conn);
Assert.That(tx.Connection, Is.SameAs(conn));
Assert.That(conn.Connector.Transaction, Is.SameAs(tx));
}
}
// Older tests
[Test]
public void Bug184RollbackFailsOnAbortedTransaction()
{
NpgsqlConnectionStringBuilder csb = new NpgsqlConnectionStringBuilder(ConnectionString);
csb.CommandTimeout = 100000;
using (NpgsqlConnection connTimeoutChanged = new NpgsqlConnection(csb.ToString())) {
connTimeoutChanged.Open();
using (var t = connTimeoutChanged.BeginTransaction()) {
try {
var command = new NpgsqlCommand("select count(*) from dta", connTimeoutChanged);
command.Transaction = t;
Object result = command.ExecuteScalar();
} catch (Exception) {
t.Rollback();
}
}
}
}
public TransactionTests(string backendVersion) : base(backendVersion) {}
}
}