sql/connection_unittest.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "base/bind.h"
   6 #include "base/files/file_util.h"
   7 #include "base/files/scoped_file.h"
   8 #include "base/files/scoped_temp_dir.h"
   9 #include "base/logging.h"
  10 #include "base/metrics/statistics_recorder.h"
  11 #include "base/test/histogram_tester.h"
  12 #include "sql/connection.h"
  13 #include "sql/correct_sql_test_base.h"
  14 #include "sql/meta_table.h"
  15 #include "sql/proxy.h"
  16 #include "sql/statement.h"
  17 #include "sql/test/error_callback_support.h"
  18 #include "sql/test/scoped_error_ignorer.h"
  19 #include "sql/test/test_helpers.h"
  20 #include "testing/gtest/include/gtest/gtest.h"
  21 #include "third_party/sqlite/sqlite3.h"
  22
  23 namespace sql {
  24 namespace test {
  25
  26 // Replaces the database time source with an object that steps forward 1ms on
  27 // each check, and which can be jumped forward an arbitrary amount of time
  28 // programmatically.
  29 class ScopedMockTimeSource {
  30  public:
  31   ScopedMockTimeSource(Connection& db)
  32       : db_(db),
  33         delta_(base::TimeDelta::FromMilliseconds(1)) {
  34     // Save the current source and replace it.
  35     save_.swap(db_.clock_);
  36     db_.clock_.reset(new MockTimeSource(*this));
  37   }
  38   ~ScopedMockTimeSource() {
  39     // Put original source back.
  40     db_.clock_.swap(save_);
  41   }
  42
  43   void adjust(const base::TimeDelta& delta) {
  44     current_time_ += delta;
  45   }
  46
  47  private:
  48   class MockTimeSource : public TimeSource {
  49    public:
  50     MockTimeSource(ScopedMockTimeSource& owner)
  51         : owner_(owner) {
  52     }
  53     ~MockTimeSource() override {}
  54
  55     base::TimeTicks Now() override {
  56       base::TimeTicks ret(owner_.current_time_);
  57       owner_.current_time_ += owner_.delta_;
  58       return ret;
  59     }
  60
  61    private:
  62     ScopedMockTimeSource& owner_;
  63     DISALLOW_COPY_AND_ASSIGN(MockTimeSource);
  64   };
  65
  66   Connection& db_;
  67
  68   // Saves original source from |db_|.
  69   scoped_ptr<TimeSource> save_;
  70
  71   // Current time returned by mock.
  72   base::TimeTicks current_time_;
  73
  74   // How far to jump on each Now() call.
  75   base::TimeDelta delta_;
  76
  77   DISALLOW_COPY_AND_ASSIGN(ScopedMockTimeSource);
  78 };
  79
  80 // Allow a test to add a SQLite function in a scoped context.
  81 class ScopedScalarFunction {
  82  public:
  83   ScopedScalarFunction(
  84       sql::Connection& db,
  85       const char* function_name,
  86       int args,
  87       base::Callback<void(sqlite3_context*,int,sqlite3_value**)> cb)
  88       : db_(db.db_), function_name_(function_name), cb_(cb) {
  89     sql::sqlite3_create_function_v2(db_, function_name, args, SQLITE_UTF8,
  90                                     this, &Run, NULL, NULL, NULL);
  91   }
  92   ~ScopedScalarFunction() {
  93     sql::sqlite3_create_function_v2(db_, function_name_, 0, SQLITE_UTF8,
  94                                     NULL, NULL, NULL, NULL, NULL);
  95   }
  96
  97  private:
  98   static void Run(sqlite3_context* context, int argc, sqlite3_value** argv) {
  99     ScopedScalarFunction* t = static_cast<ScopedScalarFunction*>(
 100         sqlite3_user_data(context));
 101     t->cb_.Run(context, argc, argv);
 102   }
 103
 104   sqlite3* db_;
 105   const char* function_name_;
 106   base::Callback<void(sqlite3_context*,int,sqlite3_value**)> cb_;
 107
 108   DISALLOW_COPY_AND_ASSIGN(ScopedScalarFunction);
 109 };
 110
 111 // Allow a test to add a SQLite commit hook in a scoped context.
 112 class ScopedCommitHook {
 113  public:
 114   ScopedCommitHook(sql::Connection& db,
 115                    base::Callback<int(void)> cb)
 116       : db_(db.db_),
 117         cb_(cb) {
 118     sql::sqlite3_commit_hook(db_, &Run, this);
 119   }
 120   ~ScopedCommitHook() {
 121     sql::sqlite3_commit_hook(db_, NULL, NULL);
 122   }
 123
 124  private:
 125   static int Run(void* p) {
 126     ScopedCommitHook* t = static_cast<ScopedCommitHook*>(p);
 127     return t->cb_.Run();
 128   }
 129
 130   sqlite3* db_;
 131   base::Callback<int(void)> cb_;
 132
 133   DISALLOW_COPY_AND_ASSIGN(ScopedCommitHook);
 134 };
 135
 136 }  // namespace test
 137 }  // namespace sql
 138
 139 namespace {
 140
 141 // Helper to return the count of items in sqlite_master.  Return -1 in
 142 // case of error.
 143 int SqliteMasterCount(sql::Connection* db) {
 144   const char* kMasterCount = "SELECT COUNT(*) FROM sqlite_master";
 145   sql::Statement s(db->GetUniqueStatement(kMasterCount));
 146   return s.Step() ? s.ColumnInt(0) : -1;
 147 }
 148
 149 // Track the number of valid references which share the same pointer.
 150 // This is used to allow testing an implicitly use-after-free case by
 151 // explicitly having the ref count live longer than the object.
 152 class RefCounter {
 153  public:
 154   RefCounter(size_t* counter)
 155       : counter_(counter) {
 156     (*counter_)++;
 157   }
 158   RefCounter(const RefCounter& other)
 159       : counter_(other.counter_) {
 160     (*counter_)++;
 161   }
 162   ~RefCounter() {
 163     (*counter_)--;
 164   }
 165
 166  private:
 167   size_t* counter_;
 168
 169   DISALLOW_ASSIGN(RefCounter);
 170 };
 171
 172 // Empty callback for implementation of ErrorCallbackSetHelper().
 173 void IgnoreErrorCallback(int error, sql::Statement* stmt) {
 174 }
 175
 176 void ErrorCallbackSetHelper(sql::Connection* db,
 177                             size_t* counter,
 178                             const RefCounter& r,
 179                             int error, sql::Statement* stmt) {
 180   // The ref count should not go to zero when changing the callback.
 181   EXPECT_GT(*counter, 0u);
 182   db->set_error_callback(base::Bind(&IgnoreErrorCallback));
 183   EXPECT_GT(*counter, 0u);
 184 }
 185
 186 void ErrorCallbackResetHelper(sql::Connection* db,
 187                               size_t* counter,
 188                               const RefCounter& r,
 189                               int error, sql::Statement* stmt) {
 190   // The ref count should not go to zero when clearing the callback.
 191   EXPECT_GT(*counter, 0u);
 192   db->reset_error_callback();
 193   EXPECT_GT(*counter, 0u);
 194 }
 195
 196 #if defined(OS_POSIX)
 197 // Set a umask and restore the old mask on destruction.  Cribbed from
 198 // shared_memory_unittest.cc.  Used by POSIX-only UserPermission test.
 199 class ScopedUmaskSetter {
 200  public:
 201   explicit ScopedUmaskSetter(mode_t target_mask) {
 202     old_umask_ = umask(target_mask);
 203   }
 204   ~ScopedUmaskSetter() { umask(old_umask_); }
 205  private:
 206   mode_t old_umask_;
 207   DISALLOW_IMPLICIT_CONSTRUCTORS(ScopedUmaskSetter);
 208 };
 209 #endif
 210
 211 class SQLConnectionTest : public sql::SQLTestBase {
 212  public:
 213   void SetUp() override {
 214     // Any macro histograms which fire before the recorder is initialized cannot
 215     // be tested.  So this needs to be ahead of Open().
 216     base::StatisticsRecorder::Initialize();
 217
 218     SQLTestBase::SetUp();
 219   }
 220
 221   // Handle errors by blowing away the database.
 222   void RazeErrorCallback(int expected_error, int error, sql::Statement* stmt) {
 223     EXPECT_EQ(expected_error, error);
 224     db().RazeAndClose();
 225   }
 226 };
 227
 228 TEST_F(SQLConnectionTest, Execute) {
 229   // Valid statement should return true.
 230   ASSERT_TRUE(db().Execute("CREATE TABLE foo (a, b)"));
 231   EXPECT_EQ(SQLITE_OK, db().GetErrorCode());
 232
 233   // Invalid statement should fail.
 234   ASSERT_EQ(SQLITE_ERROR,
 235             db().ExecuteAndReturnErrorCode("CREATE TAB foo (a, b"));
 236   EXPECT_EQ(SQLITE_ERROR, db().GetErrorCode());
 237 }
 238
 239 TEST_F(SQLConnectionTest, ExecuteWithErrorCode) {
 240   ASSERT_EQ(SQLITE_OK,
 241             db().ExecuteAndReturnErrorCode("CREATE TABLE foo (a, b)"));
 242   ASSERT_EQ(SQLITE_ERROR,
 243             db().ExecuteAndReturnErrorCode("CREATE TABLE TABLE"));
 244   ASSERT_EQ(SQLITE_ERROR,
 245             db().ExecuteAndReturnErrorCode(
 246                 "INSERT INTO foo(a, b) VALUES (1, 2, 3, 4)"));
 247 }
 248
 249 TEST_F(SQLConnectionTest, CachedStatement) {
 250   sql::StatementID id1("foo", 12);
 251
 252   ASSERT_TRUE(db().Execute("CREATE TABLE foo (a, b)"));
 253   ASSERT_TRUE(db().Execute("INSERT INTO foo(a, b) VALUES (12, 13)"));
 254
 255   // Create a new cached statement.
 256   {
 257     sql::Statement s(db().GetCachedStatement(id1, "SELECT a FROM foo"));
 258     ASSERT_TRUE(s.is_valid());
 259
 260     ASSERT_TRUE(s.Step());
 261     EXPECT_EQ(12, s.ColumnInt(0));
 262   }
 263
 264   // The statement should be cached still.
 265   EXPECT_TRUE(db().HasCachedStatement(id1));
 266
 267   {
 268     // Get the same statement using different SQL. This should ignore our
 269     // SQL and use the cached one (so it will be valid).
 270     sql::Statement s(db().GetCachedStatement(id1, "something invalid("));
 271     ASSERT_TRUE(s.is_valid());
 272
 273     ASSERT_TRUE(s.Step());
 274     EXPECT_EQ(12, s.ColumnInt(0));
 275   }
 276
 277   // Make sure other statements aren't marked as cached.
 278   EXPECT_FALSE(db().HasCachedStatement(SQL_FROM_HERE));
 279 }
 280
 281 TEST_F(SQLConnectionTest, IsSQLValidTest) {
 282   ASSERT_TRUE(db().Execute("CREATE TABLE foo (a, b)"));
 283   ASSERT_TRUE(db().IsSQLValid("SELECT a FROM foo"));
 284   ASSERT_FALSE(db().IsSQLValid("SELECT no_exist FROM foo"));
 285 }
 286
 287 TEST_F(SQLConnectionTest, DoesStuffExist) {
 288   // Test DoesTableExist.
 289   EXPECT_FALSE(db().DoesTableExist("foo"));
 290   ASSERT_TRUE(db().Execute("CREATE TABLE foo (a, b)"));
 291   ASSERT_TRUE(db().Execute("CREATE INDEX foo_a ON foo (a)"));
 292   EXPECT_TRUE(db().DoesTableExist("foo"));
 293   EXPECT_TRUE(db().DoesIndexExist("foo_a"));
 294
 295   // Test DoesColumnExist.
 296   EXPECT_FALSE(db().DoesColumnExist("foo", "bar"));
 297   EXPECT_TRUE(db().DoesColumnExist("foo", "a"));
 298
 299   // Testing for a column on a nonexistent table.
 300   EXPECT_FALSE(db().DoesColumnExist("bar", "b"));
 301
 302   // Names are not case sensitive.
 303   EXPECT_TRUE(db().DoesTableExist("FOO"));
 304   EXPECT_TRUE(db().DoesColumnExist("FOO", "A"));
 305 }
 306
 307 TEST_F(SQLConnectionTest, GetLastInsertRowId) {
 308   ASSERT_TRUE(db().Execute("CREATE TABLE foo (id INTEGER PRIMARY KEY, value)"));
 309
 310   ASSERT_TRUE(db().Execute("INSERT INTO foo (value) VALUES (12)"));
 311
 312   // Last insert row ID should be valid.
 313   int64_t row = db().GetLastInsertRowId();
 314   EXPECT_LT(0, row);
 315
 316   // It should be the primary key of the row we just inserted.
 317   sql::Statement s(db().GetUniqueStatement("SELECT value FROM foo WHERE id=?"));
 318   s.BindInt64(0, row);
 319   ASSERT_TRUE(s.Step());
 320   EXPECT_EQ(12, s.ColumnInt(0));
 321 }
 322
 323 TEST_F(SQLConnectionTest, Rollback) {
 324   ASSERT_TRUE(db().BeginTransaction());
 325   ASSERT_TRUE(db().BeginTransaction());
 326   EXPECT_EQ(2, db().transaction_nesting());
 327   db().RollbackTransaction();
 328   EXPECT_FALSE(db().CommitTransaction());
 329   EXPECT_TRUE(db().BeginTransaction());
 330 }
 331
 332 // Test the scoped error ignorer by attempting to insert a duplicate
 333 // value into an index.
 334 TEST_F(SQLConnectionTest, ScopedIgnoreError) {
 335   const char* kCreateSql = "CREATE TABLE foo (id INTEGER UNIQUE)";
 336   ASSERT_TRUE(db().Execute(kCreateSql));
 337   ASSERT_TRUE(db().Execute("INSERT INTO foo (id) VALUES (12)"));
 338
 339   {
 340     sql::ScopedErrorIgnorer ignore_errors;
 341     ignore_errors.IgnoreError(SQLITE_CONSTRAINT);
 342     ASSERT_FALSE(db().Execute("INSERT INTO foo (id) VALUES (12)"));
 343     ASSERT_TRUE(ignore_errors.CheckIgnoredErrors());
 344   }
 345 }
 346
 347 // Test that clients of GetUntrackedStatement() can test corruption-handling
 348 // with ScopedErrorIgnorer.
 349 TEST_F(SQLConnectionTest, ScopedIgnoreUntracked) {
 350   const char* kCreateSql = "CREATE TABLE foo (id INTEGER UNIQUE)";
 351   ASSERT_TRUE(db().Execute(kCreateSql));
 352   ASSERT_FALSE(db().DoesTableExist("bar"));
 353   ASSERT_TRUE(db().DoesTableExist("foo"));
 354   ASSERT_TRUE(db().DoesColumnExist("foo", "id"));
 355   db().Close();
 356
 357   // Corrupt the database so that nothing works, including PRAGMAs.
 358   ASSERT_TRUE(CorruptSizeInHeaderOfDB());
 359
 360   {
 361     sql::ScopedErrorIgnorer ignore_errors;
 362     ignore_errors.IgnoreError(SQLITE_CORRUPT);
 363     ASSERT_TRUE(db().Open(db_path()));
 364     ASSERT_FALSE(db().DoesTableExist("bar"));
 365     ASSERT_FALSE(db().DoesTableExist("foo"));
 366     ASSERT_FALSE(db().DoesColumnExist("foo", "id"));
 367     ASSERT_TRUE(ignore_errors.CheckIgnoredErrors());
 368   }
 369 }
 370
 371 TEST_F(SQLConnectionTest, ErrorCallback) {
 372   const char* kCreateSql = "CREATE TABLE foo (id INTEGER UNIQUE)";
 373   ASSERT_TRUE(db().Execute(kCreateSql));
 374   ASSERT_TRUE(db().Execute("INSERT INTO foo (id) VALUES (12)"));
 375
 376   int error = SQLITE_OK;
 377   {
 378     sql::ScopedErrorCallback sec(
 379         &db(), base::Bind(&sql::CaptureErrorCallback, &error));
 380     EXPECT_FALSE(db().Execute("INSERT INTO foo (id) VALUES (12)"));
 381
 382     // Later versions of SQLite throw SQLITE_CONSTRAINT_UNIQUE.  The specific
 383     // sub-error isn't really important.
 384     EXPECT_EQ(SQLITE_CONSTRAINT, (error&0xff));
 385   }
 386
 387   // Callback is no longer in force due to reset.
 388   {
 389     error = SQLITE_OK;
 390     sql::ScopedErrorIgnorer ignore_errors;
 391     ignore_errors.IgnoreError(SQLITE_CONSTRAINT);
 392     ASSERT_FALSE(db().Execute("INSERT INTO foo (id) VALUES (12)"));
 393     ASSERT_TRUE(ignore_errors.CheckIgnoredErrors());
 394     EXPECT_EQ(SQLITE_OK, error);
 395   }
 396
 397   // base::Bind() can curry arguments to be passed by const reference
 398   // to the callback function.  If the callback function calls
 399   // re/set_error_callback(), the storage for those arguments can be
 400   // deleted while the callback function is still executing.
 401   //
 402   // RefCounter() counts how many objects are live using an external
 403   // count.  The same counter is passed to the callback, so that it
 404   // can check directly even if the RefCounter object is no longer
 405   // live.
 406   {
 407     size_t count = 0;
 408     sql::ScopedErrorCallback sec(
 409         &db(), base::Bind(&ErrorCallbackSetHelper,
 410                           &db(), &count, RefCounter(&count)));
 411
 412     EXPECT_FALSE(db().Execute("INSERT INTO foo (id) VALUES (12)"));
 413   }
 414
 415   // Same test, but reset_error_callback() case.
 416   {
 417     size_t count = 0;
 418     sql::ScopedErrorCallback sec(
 419         &db(), base::Bind(&ErrorCallbackResetHelper,
 420                           &db(), &count, RefCounter(&count)));
 421
 422     EXPECT_FALSE(db().Execute("INSERT INTO foo (id) VALUES (12)"));
 423   }
 424 }
 425
 426 // Test that sql::Connection::Raze() results in a database without the
 427 // tables from the original database.
 428 TEST_F(SQLConnectionTest, Raze) {
 429   const char* kCreateSql = "CREATE TABLE foo (id INTEGER PRIMARY KEY, value)";
 430   ASSERT_TRUE(db().Execute(kCreateSql));
 431   ASSERT_TRUE(db().Execute("INSERT INTO foo (value) VALUES (12)"));
 432
 433   int pragma_auto_vacuum = 0;
 434   {
 435     sql::Statement s(db().GetUniqueStatement("PRAGMA auto_vacuum"));
 436     ASSERT_TRUE(s.Step());
 437     pragma_auto_vacuum = s.ColumnInt(0);
 438     ASSERT_TRUE(pragma_auto_vacuum == 0 || pragma_auto_vacuum == 1);
 439   }
 440
 441   // If auto_vacuum is set, there's an extra page to maintain a freelist.
 442   const int kExpectedPageCount = 2 + pragma_auto_vacuum;
 443
 444   {
 445     sql::Statement s(db().GetUniqueStatement("PRAGMA page_count"));
 446     ASSERT_TRUE(s.Step());
 447     EXPECT_EQ(kExpectedPageCount, s.ColumnInt(0));
 448   }
 449
 450   {
 451     sql::Statement s(db().GetUniqueStatement("SELECT * FROM sqlite_master"));
 452     ASSERT_TRUE(s.Step());
 453     EXPECT_EQ("table", s.ColumnString(0));
 454     EXPECT_EQ("foo", s.ColumnString(1));
 455     EXPECT_EQ("foo", s.ColumnString(2));
 456     // Table "foo" is stored in the last page of the file.
 457     EXPECT_EQ(kExpectedPageCount, s.ColumnInt(3));
 458     EXPECT_EQ(kCreateSql, s.ColumnString(4));
 459   }
 460
 461   ASSERT_TRUE(db().Raze());
 462
 463   {
 464     sql::Statement s(db().GetUniqueStatement("PRAGMA page_count"));
 465     ASSERT_TRUE(s.Step());
 466     EXPECT_EQ(1, s.ColumnInt(0));
 467   }
 468
 469   ASSERT_EQ(0, SqliteMasterCount(&db()));
 470
 471   {
 472     sql::Statement s(db().GetUniqueStatement("PRAGMA auto_vacuum"));
 473     ASSERT_TRUE(s.Step());
 474     // The new database has the same auto_vacuum as a fresh database.
 475     EXPECT_EQ(pragma_auto_vacuum, s.ColumnInt(0));
 476   }
 477 }
 478
 479 // Test that Raze() maintains page_size.
 480 TEST_F(SQLConnectionTest, RazePageSize) {
 481   // Fetch the default page size and double it for use in this test.
 482   // Scoped to release statement before Close().
 483   int default_page_size = 0;
 484   {
 485     sql::Statement s(db().GetUniqueStatement("PRAGMA page_size"));
 486     ASSERT_TRUE(s.Step());
 487     default_page_size = s.ColumnInt(0);
 488   }
 489   ASSERT_GT(default_page_size, 0);
 490   const int kPageSize = 2 * default_page_size;
 491
 492   // Re-open the database to allow setting the page size.
 493   db().Close();
 494   db().set_page_size(kPageSize);
 495   ASSERT_TRUE(db().Open(db_path()));
 496
 497   // page_size should match the indicated value.
 498   sql::Statement s(db().GetUniqueStatement("PRAGMA page_size"));
 499   ASSERT_TRUE(s.Step());
 500   ASSERT_EQ(kPageSize, s.ColumnInt(0));
 501
 502   // After raze, page_size should still match the indicated value.
 503   ASSERT_TRUE(db().Raze());
 504   s.Reset(true);
 505   ASSERT_TRUE(s.Step());
 506   ASSERT_EQ(kPageSize, s.ColumnInt(0));
 507 }
 508
 509 // Test that Raze() results are seen in other connections.
 510 TEST_F(SQLConnectionTest, RazeMultiple) {
 511   const char* kCreateSql = "CREATE TABLE foo (id INTEGER PRIMARY KEY, value)";
 512   ASSERT_TRUE(db().Execute(kCreateSql));
 513
 514   sql::Connection other_db;
 515   ASSERT_TRUE(other_db.Open(db_path()));
 516
 517   // Check that the second connection sees the table.
 518   ASSERT_EQ(1, SqliteMasterCount(&other_db));
 519
 520   ASSERT_TRUE(db().Raze());
 521
 522   // The second connection sees the updated database.
 523   ASSERT_EQ(0, SqliteMasterCount(&other_db));
 524 }
 525
 526 // TODO(erg): Enable this in the next patch once I add locking.
 527 #if !defined(MOJO_APPTEST_IMPL)
 528 TEST_F(SQLConnectionTest, RazeLocked) {
 529   const char* kCreateSql = "CREATE TABLE foo (id INTEGER PRIMARY KEY, value)";
 530   ASSERT_TRUE(db().Execute(kCreateSql));
 531
 532   // Open a transaction and write some data in a second connection.
 533   // This will acquire a PENDING or EXCLUSIVE transaction, which will
 534   // cause the raze to fail.
 535   sql::Connection other_db;
 536   ASSERT_TRUE(other_db.Open(db_path()));
 537   ASSERT_TRUE(other_db.BeginTransaction());
 538   const char* kInsertSql = "INSERT INTO foo VALUES (1, 'data')";
 539   ASSERT_TRUE(other_db.Execute(kInsertSql));
 540
 541   ASSERT_FALSE(db().Raze());
 542
 543   // Works after COMMIT.
 544   ASSERT_TRUE(other_db.CommitTransaction());
 545   ASSERT_TRUE(db().Raze());
 546
 547   // Re-create the database.
 548   ASSERT_TRUE(db().Execute(kCreateSql));
 549   ASSERT_TRUE(db().Execute(kInsertSql));
 550
 551   // An unfinished read transaction in the other connection also
 552   // blocks raze.
 553   const char *kQuery = "SELECT COUNT(*) FROM foo";
 554   sql::Statement s(other_db.GetUniqueStatement(kQuery));
 555   ASSERT_TRUE(s.Step());
 556   ASSERT_FALSE(db().Raze());
 557
 558   // Complete the statement unlocks the database.
 559   ASSERT_FALSE(s.Step());
 560   ASSERT_TRUE(db().Raze());
 561 }
 562 #endif
 563
 564 // Verify that Raze() can handle an empty file.  SQLite should treat
 565 // this as an empty database.
 566 TEST_F(SQLConnectionTest, RazeEmptyDB) {
 567   const char* kCreateSql = "CREATE TABLE foo (id INTEGER PRIMARY KEY, value)";
 568   ASSERT_TRUE(db().Execute(kCreateSql));
 569   db().Close();
 570
 571   TruncateDatabase();
 572
 573   ASSERT_TRUE(db().Open(db_path()));
 574   ASSERT_TRUE(db().Raze());
 575   EXPECT_EQ(0, SqliteMasterCount(&db()));
 576 }
 577
 578 // Verify that Raze() can handle a file of junk.
 579 TEST_F(SQLConnectionTest, RazeNOTADB) {
 580   db().Close();
 581   sql::Connection::Delete(db_path());
 582   ASSERT_FALSE(GetPathExists(db_path()));
 583
 584   WriteJunkToDatabase(SQLTestBase::TYPE_OVERWRITE_AND_TRUNCATE);
 585   ASSERT_TRUE(GetPathExists(db_path()));
 586
 587   // SQLite will successfully open the handle, but fail when running PRAGMA
 588   // statements that access the database.
 589   {
 590     sql::ScopedErrorIgnorer ignore_errors;
 591
 592     // Earlier versions of Chromium compiled against SQLite 3.6.7.3, which
 593     // returned SQLITE_IOERR_SHORT_READ in this case.  Some platforms may still
 594     // compile against an earlier SQLite via USE_SYSTEM_SQLITE.
 595     if (ignore_errors.SQLiteLibVersionNumber() < 3008005) {
 596       ignore_errors.IgnoreError(SQLITE_IOERR_SHORT_READ);
 597     } else {
 598       ignore_errors.IgnoreError(SQLITE_NOTADB);
 599     }
 600
 601     EXPECT_TRUE(db().Open(db_path()));
 602     ASSERT_TRUE(ignore_errors.CheckIgnoredErrors());
 603   }
 604   EXPECT_TRUE(db().Raze());
 605   db().Close();
 606
 607   // Now empty, the open should open an empty database.
 608   EXPECT_TRUE(db().Open(db_path()));
 609   EXPECT_EQ(0, SqliteMasterCount(&db()));
 610 }
 611
 612 // Verify that Raze() can handle a database overwritten with garbage.
 613 TEST_F(SQLConnectionTest, RazeNOTADB2) {
 614   const char* kCreateSql = "CREATE TABLE foo (id INTEGER PRIMARY KEY, value)";
 615   ASSERT_TRUE(db().Execute(kCreateSql));
 616   ASSERT_EQ(1, SqliteMasterCount(&db()));
 617   db().Close();
 618
 619   WriteJunkToDatabase(SQLTestBase::TYPE_OVERWRITE);
 620
 621   // SQLite will successfully open the handle, but will fail with
 622   // SQLITE_NOTADB on pragma statemenets which attempt to read the
 623   // corrupted header.
 624   {
 625     sql::ScopedErrorIgnorer ignore_errors;
 626     ignore_errors.IgnoreError(SQLITE_NOTADB);
 627     EXPECT_TRUE(db().Open(db_path()));
 628     ASSERT_TRUE(ignore_errors.CheckIgnoredErrors());
 629   }
 630   EXPECT_TRUE(db().Raze());
 631   db().Close();
 632
 633   // Now empty, the open should succeed with an empty database.
 634   EXPECT_TRUE(db().Open(db_path()));
 635   EXPECT_EQ(0, SqliteMasterCount(&db()));
 636 }
 637
 638 // Test that a callback from Open() can raze the database.  This is
 639 // essential for cases where the Open() can fail entirely, so the
 640 // Raze() cannot happen later.  Additionally test that when the
 641 // callback does this during Open(), the open is retried and succeeds.
 642 TEST_F(SQLConnectionTest, RazeCallbackReopen) {
 643   const char* kCreateSql = "CREATE TABLE foo (id INTEGER PRIMARY KEY, value)";
 644   ASSERT_TRUE(db().Execute(kCreateSql));
 645   ASSERT_EQ(1, SqliteMasterCount(&db()));
 646   db().Close();
 647
 648   // Corrupt the database so that nothing works, including PRAGMAs.
 649   ASSERT_TRUE(CorruptSizeInHeaderOfDB());
 650
 651   // Open() will succeed, even though the PRAGMA calls within will
 652   // fail with SQLITE_CORRUPT, as will this PRAGMA.
 653   {
 654     sql::ScopedErrorIgnorer ignore_errors;
 655     ignore_errors.IgnoreError(SQLITE_CORRUPT);
 656     ASSERT_TRUE(db().Open(db_path()));
 657     ASSERT_FALSE(db().Execute("PRAGMA auto_vacuum"));
 658     db().Close();
 659     ASSERT_TRUE(ignore_errors.CheckIgnoredErrors());
 660   }
 661
 662   db().set_error_callback(base::Bind(&SQLConnectionTest::RazeErrorCallback,
 663                                      base::Unretained(this),
 664                                      SQLITE_CORRUPT));
 665
 666   // When the PRAGMA calls in Open() raise SQLITE_CORRUPT, the error
 667   // callback will call RazeAndClose().  Open() will then fail and be
 668   // retried.  The second Open() on the empty database will succeed
 669   // cleanly.
 670   ASSERT_TRUE(db().Open(db_path()));
 671   ASSERT_TRUE(db().Execute("PRAGMA auto_vacuum"));
 672   EXPECT_EQ(0, SqliteMasterCount(&db()));
 673 }
 674
 675 // Basic test of RazeAndClose() operation.
 676 TEST_F(SQLConnectionTest, RazeAndClose) {
 677   const char* kCreateSql = "CREATE TABLE foo (id INTEGER PRIMARY KEY, value)";
 678   const char* kPopulateSql = "INSERT INTO foo (value) VALUES (12)";
 679
 680   // Test that RazeAndClose() closes the database, and that the
 681   // database is empty when re-opened.
 682   ASSERT_TRUE(db().Execute(kCreateSql));
 683   ASSERT_TRUE(db().Execute(kPopulateSql));
 684   ASSERT_TRUE(db().RazeAndClose());
 685   ASSERT_FALSE(db().is_open());
 686   db().Close();
 687   ASSERT_TRUE(db().Open(db_path()));
 688   ASSERT_EQ(0, SqliteMasterCount(&db()));
 689
 690   // Test that RazeAndClose() can break transactions.
 691   ASSERT_TRUE(db().Execute(kCreateSql));
 692   ASSERT_TRUE(db().Execute(kPopulateSql));
 693   ASSERT_TRUE(db().BeginTransaction());
 694   ASSERT_TRUE(db().RazeAndClose());
 695   ASSERT_FALSE(db().is_open());
 696   ASSERT_FALSE(db().CommitTransaction());
 697   db().Close();
 698   ASSERT_TRUE(db().Open(db_path()));
 699   ASSERT_EQ(0, SqliteMasterCount(&db()));
 700 }
 701
 702 // Test that various operations fail without crashing after
 703 // RazeAndClose().
 704 TEST_F(SQLConnectionTest, RazeAndCloseDiagnostics) {
 705   const char* kCreateSql = "CREATE TABLE foo (id INTEGER PRIMARY KEY, value)";
 706   const char* kPopulateSql = "INSERT INTO foo (value) VALUES (12)";
 707   const char* kSimpleSql = "SELECT 1";
 708
 709   ASSERT_TRUE(db().Execute(kCreateSql));
 710   ASSERT_TRUE(db().Execute(kPopulateSql));
 711
 712   // Test baseline expectations.
 713   db().Preload();
 714   ASSERT_TRUE(db().DoesTableExist("foo"));
 715   ASSERT_TRUE(db().IsSQLValid(kSimpleSql));
 716   ASSERT_EQ(SQLITE_OK, db().ExecuteAndReturnErrorCode(kSimpleSql));
 717   ASSERT_TRUE(db().Execute(kSimpleSql));
 718   ASSERT_TRUE(db().is_open());
 719   {
 720     sql::Statement s(db().GetUniqueStatement(kSimpleSql));
 721     ASSERT_TRUE(s.Step());
 722   }
 723   {
 724     sql::Statement s(db().GetCachedStatement(SQL_FROM_HERE, kSimpleSql));
 725     ASSERT_TRUE(s.Step());
 726   }
 727   ASSERT_TRUE(db().BeginTransaction());
 728   ASSERT_TRUE(db().CommitTransaction());
 729   ASSERT_TRUE(db().BeginTransaction());
 730   db().RollbackTransaction();
 731
 732   ASSERT_TRUE(db().RazeAndClose());
 733
 734   // At this point, they should all fail, but not crash.
 735   db().Preload();
 736   ASSERT_FALSE(db().DoesTableExist("foo"));
 737   ASSERT_FALSE(db().IsSQLValid(kSimpleSql));
 738   ASSERT_EQ(SQLITE_ERROR, db().ExecuteAndReturnErrorCode(kSimpleSql));
 739   ASSERT_FALSE(db().Execute(kSimpleSql));
 740   ASSERT_FALSE(db().is_open());
 741   {
 742     sql::Statement s(db().GetUniqueStatement(kSimpleSql));
 743     ASSERT_FALSE(s.Step());
 744   }
 745   {
 746     sql::Statement s(db().GetCachedStatement(SQL_FROM_HERE, kSimpleSql));
 747     ASSERT_FALSE(s.Step());
 748   }
 749   ASSERT_FALSE(db().BeginTransaction());
 750   ASSERT_FALSE(db().CommitTransaction());
 751   ASSERT_FALSE(db().BeginTransaction());
 752   db().RollbackTransaction();
 753
 754   // Close normally to reset the poisoned flag.
 755   db().Close();
 756
 757   // DEATH tests not supported on Android or iOS.
 758 #if !defined(OS_ANDROID) && !defined(OS_IOS)
 759   // Once the real Close() has been called, various calls enforce API
 760   // usage by becoming fatal in debug mode.  Since DEATH tests are
 761   // expensive, just test one of them.
 762   if (DLOG_IS_ON(FATAL)) {
 763     ASSERT_DEATH({
 764         db().IsSQLValid(kSimpleSql);
 765       }, "Illegal use of connection without a db");
 766   }
 767 #endif
 768 }
 769
 770 // TODO(shess): Spin up a background thread to hold other_db, to more
 771 // closely match real life.  That would also allow testing
 772 // RazeWithTimeout().
 773
 774 #if defined(OS_ANDROID)
 775 TEST_F(SQLConnectionTest, SetTempDirForSQL) {
 776
 777   sql::MetaTable meta_table;
 778   // Below call needs a temporary directory in sqlite3
 779   // On Android, it can pass only when the temporary directory is set.
 780   // Otherwise, sqlite3 doesn't find the correct directory to store
 781   // temporary files and will report the error 'unable to open
 782   // database file'.
 783   ASSERT_TRUE(meta_table.Init(&db(), 4, 4));
 784 }
 785 #endif
 786
 787 TEST_F(SQLConnectionTest, Delete) {
 788   EXPECT_TRUE(db().Execute("CREATE TABLE x (x)"));
 789   db().Close();
 790
 791   // Should have both a main database file and a journal file because
 792   // of journal_mode TRUNCATE.
 793   base::FilePath journal(db_path().value() + FILE_PATH_LITERAL("-journal"));
 794   ASSERT_TRUE(GetPathExists(db_path()));
 795   ASSERT_TRUE(GetPathExists(journal));
 796
 797   sql::Connection::Delete(db_path());
 798   EXPECT_FALSE(GetPathExists(db_path()));
 799   EXPECT_FALSE(GetPathExists(journal));
 800 }
 801
 802 // This test manually sets on disk permissions; this doesn't apply to the mojo
 803 // fork.
 804 #if defined(OS_POSIX) && !defined(MOJO_APPTEST_IMPL)
 805 // Test that set_restrict_to_user() trims database permissions so that
 806 // only the owner (and root) can read.
 807 TEST_F(SQLConnectionTest, UserPermission) {
 808   // If the bots all had a restrictive umask setting such that
 809   // databases are always created with only the owner able to read
 810   // them, then the code could break without breaking the tests.
 811   // Temporarily provide a more permissive umask.
 812   db().Close();
 813   sql::Connection::Delete(db_path());
 814   ASSERT_FALSE(GetPathExists(db_path()));
 815   ScopedUmaskSetter permissive_umask(S_IWGRP | S_IWOTH);
 816   ASSERT_TRUE(db().Open(db_path()));
 817
 818   // Cause the journal file to be created.  If the default
 819   // journal_mode is changed back to DELETE, then parts of this test
 820   // will need to be updated.
 821   EXPECT_TRUE(db().Execute("CREATE TABLE x (x)"));
 822
 823   base::FilePath journal(db_path().value() + FILE_PATH_LITERAL("-journal"));
 824   int mode;
 825
 826   // Given a permissive umask, the database is created with permissive
 827   // read access for the database and journal.
 828   ASSERT_TRUE(GetPathExists(db_path()));
 829   ASSERT_TRUE(GetPathExists(journal));
 830   mode = base::FILE_PERMISSION_MASK;
 831   EXPECT_TRUE(base::GetPosixFilePermissions(db_path(), &mode));
 832   ASSERT_NE((mode & base::FILE_PERMISSION_USER_MASK), mode);
 833   mode = base::FILE_PERMISSION_MASK;
 834   EXPECT_TRUE(base::GetPosixFilePermissions(journal, &mode));
 835   ASSERT_NE((mode & base::FILE_PERMISSION_USER_MASK), mode);
 836
 837   // Re-open with restricted permissions and verify that the modes
 838   // changed for both the main database and the journal.
 839   db().Close();
 840   db().set_restrict_to_user();
 841   ASSERT_TRUE(db().Open(db_path()));
 842   ASSERT_TRUE(GetPathExists(db_path()));
 843   ASSERT_TRUE(GetPathExists(journal));
 844   mode = base::FILE_PERMISSION_MASK;
 845   EXPECT_TRUE(base::GetPosixFilePermissions(db_path(), &mode));
 846   ASSERT_EQ((mode & base::FILE_PERMISSION_USER_MASK), mode);
 847   mode = base::FILE_PERMISSION_MASK;
 848   EXPECT_TRUE(base::GetPosixFilePermissions(journal, &mode));
 849   ASSERT_EQ((mode & base::FILE_PERMISSION_USER_MASK), mode);
 850
 851   // Delete and re-create the database, the restriction should still apply.
 852   db().Close();
 853   sql::Connection::Delete(db_path());
 854   ASSERT_TRUE(db().Open(db_path()));
 855   ASSERT_TRUE(GetPathExists(db_path()));
 856   ASSERT_FALSE(GetPathExists(journal));
 857   mode = base::FILE_PERMISSION_MASK;
 858   EXPECT_TRUE(base::GetPosixFilePermissions(db_path(), &mode));
 859   ASSERT_EQ((mode & base::FILE_PERMISSION_USER_MASK), mode);
 860
 861   // Verify that journal creation inherits the restriction.
 862   EXPECT_TRUE(db().Execute("CREATE TABLE x (x)"));
 863   ASSERT_TRUE(GetPathExists(journal));
 864   mode = base::FILE_PERMISSION_MASK;
 865   EXPECT_TRUE(base::GetPosixFilePermissions(journal, &mode));
 866   ASSERT_EQ((mode & base::FILE_PERMISSION_USER_MASK), mode);
 867 }
 868 #endif  // defined(OS_POSIX)
 869
 870 // Test that errors start happening once Poison() is called.
 871 TEST_F(SQLConnectionTest, Poison) {
 872   EXPECT_TRUE(db().Execute("CREATE TABLE x (x)"));
 873
 874   // Before the Poison() call, things generally work.
 875   EXPECT_TRUE(db().IsSQLValid("INSERT INTO x VALUES ('x')"));
 876   EXPECT_TRUE(db().Execute("INSERT INTO x VALUES ('x')"));
 877   {
 878     sql::Statement s(db().GetUniqueStatement("SELECT COUNT(*) FROM x"));
 879     ASSERT_TRUE(s.is_valid());
 880     ASSERT_TRUE(s.Step());
 881   }
 882
 883   // Get a statement which is valid before and will exist across Poison().
 884   sql::Statement valid_statement(
 885       db().GetUniqueStatement("SELECT COUNT(*) FROM sqlite_master"));
 886   ASSERT_TRUE(valid_statement.is_valid());
 887   ASSERT_TRUE(valid_statement.Step());
 888   valid_statement.Reset(true);
 889
 890   db().Poison();
 891
 892   // After the Poison() call, things fail.
 893   EXPECT_FALSE(db().IsSQLValid("INSERT INTO x VALUES ('x')"));
 894   EXPECT_FALSE(db().Execute("INSERT INTO x VALUES ('x')"));
 895   {
 896     sql::Statement s(db().GetUniqueStatement("SELECT COUNT(*) FROM x"));
 897     ASSERT_FALSE(s.is_valid());
 898     ASSERT_FALSE(s.Step());
 899   }
 900
 901   // The existing statement has become invalid.
 902   ASSERT_FALSE(valid_statement.is_valid());
 903   ASSERT_FALSE(valid_statement.Step());
 904 }
 905
 906 // Test attaching and detaching databases from the connection.
 907 TEST_F(SQLConnectionTest, Attach) {
 908   EXPECT_TRUE(db().Execute("CREATE TABLE foo (a, b)"));
 909
 910   // Create a database to attach to.
 911   base::FilePath attach_path =
 912       db_path().DirName().AppendASCII("SQLConnectionAttach.db");
 913   const char kAttachmentPoint[] = "other";
 914   {
 915     sql::Connection other_db;
 916     ASSERT_TRUE(other_db.Open(attach_path));
 917     EXPECT_TRUE(other_db.Execute("CREATE TABLE bar (a, b)"));
 918     EXPECT_TRUE(other_db.Execute("INSERT INTO bar VALUES ('hello', 'world')"));
 919   }
 920
 921   // Cannot see the attached database, yet.
 922   EXPECT_FALSE(db().IsSQLValid("SELECT count(*) from other.bar"));
 923
 924   // Attach fails in a transaction.
 925   EXPECT_TRUE(db().BeginTransaction());
 926   {
 927     sql::ScopedErrorIgnorer ignore_errors;
 928     ignore_errors.IgnoreError(SQLITE_ERROR);
 929     EXPECT_FALSE(db().AttachDatabase(attach_path, kAttachmentPoint));
 930     ASSERT_TRUE(ignore_errors.CheckIgnoredErrors());
 931   }
 932
 933   // Attach succeeds when the transaction is closed.
 934   db().RollbackTransaction();
 935   EXPECT_TRUE(db().AttachDatabase(attach_path, kAttachmentPoint));
 936   EXPECT_TRUE(db().IsSQLValid("SELECT count(*) from other.bar"));
 937
 938   // Queries can touch both databases.
 939   EXPECT_TRUE(db().Execute("INSERT INTO foo SELECT a, b FROM other.bar"));
 940   {
 941     sql::Statement s(db().GetUniqueStatement("SELECT COUNT(*) FROM foo"));
 942     ASSERT_TRUE(s.Step());
 943     EXPECT_EQ(1, s.ColumnInt(0));
 944   }
 945
 946   // Detach also fails in a transaction.
 947   EXPECT_TRUE(db().BeginTransaction());
 948   {
 949     sql::ScopedErrorIgnorer ignore_errors;
 950     ignore_errors.IgnoreError(SQLITE_ERROR);
 951     EXPECT_FALSE(db().DetachDatabase(kAttachmentPoint));
 952     EXPECT_TRUE(db().IsSQLValid("SELECT count(*) from other.bar"));
 953     ASSERT_TRUE(ignore_errors.CheckIgnoredErrors());
 954   }
 955
 956   // Detach succeeds outside of a transaction.
 957   db().RollbackTransaction();
 958   EXPECT_TRUE(db().DetachDatabase(kAttachmentPoint));
 959
 960   EXPECT_FALSE(db().IsSQLValid("SELECT count(*) from other.bar"));
 961 }
 962
 963 TEST_F(SQLConnectionTest, Basic_QuickIntegrityCheck) {
 964   const char* kCreateSql = "CREATE TABLE foo (id INTEGER PRIMARY KEY, value)";
 965   ASSERT_TRUE(db().Execute(kCreateSql));
 966   EXPECT_TRUE(db().QuickIntegrityCheck());
 967   db().Close();
 968
 969   ASSERT_TRUE(CorruptSizeInHeaderOfDB());
 970
 971   {
 972     sql::ScopedErrorIgnorer ignore_errors;
 973     ignore_errors.IgnoreError(SQLITE_CORRUPT);
 974     ASSERT_TRUE(db().Open(db_path()));
 975     EXPECT_FALSE(db().QuickIntegrityCheck());
 976     ASSERT_TRUE(ignore_errors.CheckIgnoredErrors());
 977   }
 978 }
 979
 980 TEST_F(SQLConnectionTest, Basic_FullIntegrityCheck) {
 981   const std::string kOk("ok");
 982   std::vector<std::string> messages;
 983
 984   const char* kCreateSql = "CREATE TABLE foo (id INTEGER PRIMARY KEY, value)";
 985   ASSERT_TRUE(db().Execute(kCreateSql));
 986   EXPECT_TRUE(db().FullIntegrityCheck(&messages));
 987   EXPECT_EQ(1u, messages.size());
 988   EXPECT_EQ(kOk, messages[0]);
 989   db().Close();
 990
 991   ASSERT_TRUE(CorruptSizeInHeaderOfDB());
 992
 993   {
 994     sql::ScopedErrorIgnorer ignore_errors;
 995     ignore_errors.IgnoreError(SQLITE_CORRUPT);
 996     ASSERT_TRUE(db().Open(db_path()));
 997     EXPECT_TRUE(db().FullIntegrityCheck(&messages));
 998     EXPECT_LT(1u, messages.size());
 999     EXPECT_NE(kOk, messages[0]);
1000     ASSERT_TRUE(ignore_errors.CheckIgnoredErrors());
1001   }
1002
1003   // TODO(shess): CorruptTableOrIndex could be used to produce a
1004   // file that would pass the quick check and fail the full check.
1005 }
1006
1007 // Test Sqlite.Stats histogram for execute-oriented calls.
1008 TEST_F(SQLConnectionTest, EventsExecute) {
1009   // Re-open with histogram tag.
1010   db().Close();
1011   db().set_histogram_tag("Test");
1012   ASSERT_TRUE(db().Open(db_path()));
1013
1014   // Open() uses Execute() extensively, don't track those calls.
1015   base::HistogramTester tester;
1016
1017   const char kHistogramName[] = "Sqlite.Stats.Test";
1018   const char kGlobalHistogramName[] = "Sqlite.Stats";
1019
1020   ASSERT_TRUE(db().BeginTransaction());
1021   const char* kCreateSql = "CREATE TABLE foo (id INTEGER PRIMARY KEY, value)";
1022   EXPECT_TRUE(db().Execute(kCreateSql));
1023   EXPECT_TRUE(db().Execute("INSERT INTO foo VALUES (10, 'text')"));
1024   EXPECT_TRUE(db().Execute("INSERT INTO foo VALUES (11, 'text')"));
1025   EXPECT_TRUE(db().Execute("INSERT INTO foo VALUES (12, 'text')"));
1026   EXPECT_TRUE(db().Execute("INSERT INTO foo VALUES (13, 'text')"));
1027   EXPECT_TRUE(db().Execute("INSERT INTO foo VALUES (14, 'text')"));
1028   EXPECT_TRUE(db().Execute("INSERT INTO foo VALUES (15, 'text');"
1029                            "INSERT INTO foo VALUES (16, 'text');"
1030                            "INSERT INTO foo VALUES (17, 'text');"
1031                            "INSERT INTO foo VALUES (18, 'text');"
1032                            "INSERT INTO foo VALUES (19, 'text')"));
1033   ASSERT_TRUE(db().CommitTransaction());
1034   ASSERT_TRUE(db().BeginTransaction());
1035   EXPECT_TRUE(db().Execute("INSERT INTO foo VALUES (20, 'text')"));
1036   db().RollbackTransaction();
1037   EXPECT_TRUE(db().Execute("INSERT INTO foo VALUES (20, 'text')"));
1038   EXPECT_TRUE(db().Execute("INSERT INTO foo VALUES (21, 'text')"));
1039
1040   // The create, 5 inserts, multi-statement insert, rolled-back insert, 2
1041   // inserts outside transaction.
1042   tester.ExpectBucketCount(kHistogramName, sql::Connection::EVENT_EXECUTE, 10);
1043   tester.ExpectBucketCount(kGlobalHistogramName,
1044                            sql::Connection::EVENT_EXECUTE, 10);
1045
1046   // All of the executes, with the multi-statement inserts broken out, plus one
1047   // for each begin, commit, and rollback.
1048   tester.ExpectBucketCount(kHistogramName,
1049                            sql::Connection::EVENT_STATEMENT_RUN, 18);
1050   tester.ExpectBucketCount(kGlobalHistogramName,
1051                            sql::Connection::EVENT_STATEMENT_RUN, 18);
1052
1053   tester.ExpectBucketCount(kHistogramName,
1054                            sql::Connection::EVENT_STATEMENT_ROWS, 0);
1055   tester.ExpectBucketCount(kGlobalHistogramName,
1056                            sql::Connection::EVENT_STATEMENT_ROWS, 0);
1057   tester.ExpectBucketCount(kHistogramName,
1058                            sql::Connection::EVENT_STATEMENT_SUCCESS, 18);
1059   tester.ExpectBucketCount(kGlobalHistogramName,
1060                            sql::Connection::EVENT_STATEMENT_SUCCESS, 18);
1061
1062   // The 2 inserts outside the transaction.
1063   tester.ExpectBucketCount(kHistogramName,
1064                            sql::Connection::EVENT_CHANGES_AUTOCOMMIT, 2);
1065   tester.ExpectBucketCount(kGlobalHistogramName,
1066                            sql::Connection::EVENT_CHANGES_AUTOCOMMIT, 2);
1067
1068   // 11 inserts inside transactions.
1069   tester.ExpectBucketCount(kHistogramName, sql::Connection::EVENT_CHANGES, 11);
1070   tester.ExpectBucketCount(kGlobalHistogramName,
1071                            sql::Connection::EVENT_CHANGES, 11);
1072
1073   tester.ExpectBucketCount(kHistogramName, sql::Connection::EVENT_BEGIN, 2);
1074   tester.ExpectBucketCount(kGlobalHistogramName,
1075                            sql::Connection::EVENT_BEGIN, 2);
1076   tester.ExpectBucketCount(kHistogramName, sql::Connection::EVENT_COMMIT, 1);
1077   tester.ExpectBucketCount(kGlobalHistogramName,
1078                            sql::Connection::EVENT_COMMIT, 1);
1079   tester.ExpectBucketCount(kHistogramName, sql::Connection::EVENT_ROLLBACK, 1);
1080   tester.ExpectBucketCount(kGlobalHistogramName,
1081                            sql::Connection::EVENT_ROLLBACK, 1);
1082 }
1083
1084 // Test Sqlite.Stats histogram for prepared statements.
1085 TEST_F(SQLConnectionTest, EventsStatement) {
1086   // Re-open with histogram tag.
1087   db().Close();
1088   db().set_histogram_tag("Test");
1089   ASSERT_TRUE(db().Open(db_path()));
1090
1091   const char kHistogramName[] = "Sqlite.Stats.Test";
1092   const char kGlobalHistogramName[] = "Sqlite.Stats";
1093
1094   const char* kCreateSql = "CREATE TABLE foo (id INTEGER PRIMARY KEY, value)";
1095   EXPECT_TRUE(db().Execute(kCreateSql));
1096   EXPECT_TRUE(db().Execute("INSERT INTO foo VALUES (10, 'text')"));
1097   EXPECT_TRUE(db().Execute("INSERT INTO foo VALUES (11, 'text')"));
1098   EXPECT_TRUE(db().Execute("INSERT INTO foo VALUES (12, 'text')"));
1099
1100   {
1101     base::HistogramTester tester;
1102
1103     {
1104       sql::Statement s(db().GetUniqueStatement("SELECT value FROM foo"));
1105       while (s.Step()) {
1106       }
1107     }
1108
1109     tester.ExpectBucketCount(kHistogramName,
1110                              sql::Connection::EVENT_STATEMENT_RUN, 1);
1111     tester.ExpectBucketCount(kGlobalHistogramName,
1112                              sql::Connection::EVENT_STATEMENT_RUN, 1);
1113     tester.ExpectBucketCount(kHistogramName,
1114                              sql::Connection::EVENT_STATEMENT_ROWS, 3);
1115     tester.ExpectBucketCount(kGlobalHistogramName,
1116                              sql::Connection::EVENT_STATEMENT_ROWS, 3);
1117     tester.ExpectBucketCount(kHistogramName,
1118                              sql::Connection::EVENT_STATEMENT_SUCCESS, 1);
1119     tester.ExpectBucketCount(kGlobalHistogramName,
1120                              sql::Connection::EVENT_STATEMENT_SUCCESS, 1);
1121   }
1122
1123   {
1124     base::HistogramTester tester;
1125
1126     {
1127       sql::Statement s(db().GetUniqueStatement(
1128           "SELECT value FROM foo WHERE id > 10"));
1129       while (s.Step()) {
1130       }
1131     }
1132
1133     tester.ExpectBucketCount(kHistogramName,
1134                              sql::Connection::EVENT_STATEMENT_RUN, 1);
1135     tester.ExpectBucketCount(kGlobalHistogramName,
1136                              sql::Connection::EVENT_STATEMENT_RUN, 1);
1137     tester.ExpectBucketCount(kHistogramName,
1138                              sql::Connection::EVENT_STATEMENT_ROWS, 2);
1139     tester.ExpectBucketCount(kGlobalHistogramName,
1140                              sql::Connection::EVENT_STATEMENT_ROWS, 2);
1141     tester.ExpectBucketCount(kHistogramName,
1142                              sql::Connection::EVENT_STATEMENT_SUCCESS, 1);
1143     tester.ExpectBucketCount(kGlobalHistogramName,
1144                              sql::Connection::EVENT_STATEMENT_SUCCESS, 1);
1145   }
1146 }
1147
1148 // SQLite function to adjust mock time by |argv[0]| milliseconds.
1149 void sqlite_adjust_millis(sql::test::ScopedMockTimeSource* time_mock,
1150                           sqlite3_context* context,
1151                           int argc, sqlite3_value** argv) {
1152   int64 milliseconds = argc > 0 ? sqlite3_value_int64(argv[0]) : 1000;
1153   time_mock->adjust(base::TimeDelta::FromMilliseconds(milliseconds));
1154   sqlite3_result_int64(context, milliseconds);
1155 }
1156
1157 // Adjust mock time by |milliseconds| on commit.
1158 int adjust_commit_hook(sql::test::ScopedMockTimeSource* time_mock,
1159                        int64 milliseconds) {
1160   time_mock->adjust(base::TimeDelta::FromMilliseconds(milliseconds));
1161   return SQLITE_OK;
1162 }
1163
1164 const char kCommitTime[] = "Sqlite.CommitTime.Test";
1165 const char kAutoCommitTime[] = "Sqlite.AutoCommitTime.Test";
1166 const char kUpdateTime[] = "Sqlite.UpdateTime.Test";
1167 const char kQueryTime[] = "Sqlite.QueryTime.Test";
1168
1169 // Read-only query allocates time to QueryTime, but not others.
1170 TEST_F(SQLConnectionTest, TimeQuery) {
1171   // Re-open with histogram tag.  Use an in-memory database to minimize variance
1172   // due to filesystem.
1173   db().Close();
1174   db().set_histogram_tag("Test");
1175   ASSERT_TRUE(db().OpenInMemory());
1176
1177   sql::test::ScopedMockTimeSource time_mock(db());
1178
1179   const char* kCreateSql = "CREATE TABLE foo (id INTEGER PRIMARY KEY, value)";
1180   EXPECT_TRUE(db().Execute(kCreateSql));
1181
1182   // Function to inject pauses into statements.
1183   sql::test::ScopedScalarFunction scoper(
1184       db(), "milliadjust", 1, base::Bind(&sqlite_adjust_millis, &time_mock));
1185
1186   base::HistogramTester tester;
1187
1188   EXPECT_TRUE(db().Execute("SELECT milliadjust(10)"));
1189
1190   scoped_ptr<base::HistogramSamples> samples(
1191       tester.GetHistogramSamplesSinceCreation(kQueryTime));
1192   ASSERT_TRUE(samples);
1193   // 10 for the adjust, 1 for the measurement.
1194   EXPECT_EQ(11, samples->sum());
1195
1196   samples = tester.GetHistogramSamplesSinceCreation(kUpdateTime);
1197   EXPECT_EQ(0, samples->sum());
1198
1199   samples = tester.GetHistogramSamplesSinceCreation(kCommitTime);
1200   EXPECT_EQ(0, samples->sum());
1201
1202   samples = tester.GetHistogramSamplesSinceCreation(kAutoCommitTime);
1203   EXPECT_EQ(0, samples->sum());
1204 }
1205
1206 // Autocommit update allocates time to QueryTime, UpdateTime, and
1207 // AutoCommitTime.
1208 TEST_F(SQLConnectionTest, TimeUpdateAutocommit) {
1209   // Re-open with histogram tag.  Use an in-memory database to minimize variance
1210   // due to filesystem.
1211   db().Close();
1212   db().set_histogram_tag("Test");
1213   ASSERT_TRUE(db().OpenInMemory());
1214
1215   sql::test::ScopedMockTimeSource time_mock(db());
1216
1217   const char* kCreateSql = "CREATE TABLE foo (id INTEGER PRIMARY KEY, value)";
1218   EXPECT_TRUE(db().Execute(kCreateSql));
1219
1220   // Function to inject pauses into statements.
1221   sql::test::ScopedScalarFunction scoper(
1222       db(), "milliadjust", 1, base::Bind(&sqlite_adjust_millis, &time_mock));
1223
1224   base::HistogramTester tester;
1225
1226   EXPECT_TRUE(db().Execute("INSERT INTO foo VALUES (10, milliadjust(10))"));
1227
1228   scoped_ptr<base::HistogramSamples> samples(
1229       tester.GetHistogramSamplesSinceCreation(kQueryTime));
1230   ASSERT_TRUE(samples);
1231   // 10 for the adjust, 1 for the measurement.
1232   EXPECT_EQ(11, samples->sum());
1233
1234   samples = tester.GetHistogramSamplesSinceCreation(kUpdateTime);
1235   ASSERT_TRUE(samples);
1236   // 10 for the adjust, 1 for the measurement.
1237   EXPECT_EQ(11, samples->sum());
1238
1239   samples = tester.GetHistogramSamplesSinceCreation(kCommitTime);
1240   EXPECT_EQ(0, samples->sum());
1241
1242   samples = tester.GetHistogramSamplesSinceCreation(kAutoCommitTime);
1243   ASSERT_TRUE(samples);
1244   // 10 for the adjust, 1 for the measurement.
1245   EXPECT_EQ(11, samples->sum());
1246 }
1247
1248 // Update with explicit transaction allocates time to QueryTime, UpdateTime, and
1249 // CommitTime.
1250 TEST_F(SQLConnectionTest, TimeUpdateTransaction) {
1251   // Re-open with histogram tag.  Use an in-memory database to minimize variance
1252   // due to filesystem.
1253   db().Close();
1254   db().set_histogram_tag("Test");
1255   ASSERT_TRUE(db().OpenInMemory());
1256
1257   sql::test::ScopedMockTimeSource time_mock(db());
1258
1259   const char* kCreateSql = "CREATE TABLE foo (id INTEGER PRIMARY KEY, value)";
1260   EXPECT_TRUE(db().Execute(kCreateSql));
1261
1262   // Function to inject pauses into statements.
1263   sql::test::ScopedScalarFunction scoper(
1264       db(), "milliadjust", 1, base::Bind(&sqlite_adjust_millis, &time_mock));
1265
1266   base::HistogramTester tester;
1267
1268   {
1269     // Make the commit slow.
1270     sql::test::ScopedCommitHook scoped_hook(
1271         db(), base::Bind(adjust_commit_hook, &time_mock, 100));
1272     ASSERT_TRUE(db().BeginTransaction());
1273     EXPECT_TRUE(db().Execute(
1274         "INSERT INTO foo VALUES (11, milliadjust(10))"));
1275     EXPECT_TRUE(db().Execute(
1276         "UPDATE foo SET value = milliadjust(10) WHERE id = 11"));
1277     EXPECT_TRUE(db().CommitTransaction());
1278   }
1279
1280   scoped_ptr<base::HistogramSamples> samples(
1281       tester.GetHistogramSamplesSinceCreation(kQueryTime));
1282   ASSERT_TRUE(samples);
1283   // 10 for insert adjust, 10 for update adjust, 100 for commit adjust, 1 for
1284   // measuring each of BEGIN, INSERT, UPDATE, and COMMIT.
1285   EXPECT_EQ(124, samples->sum());
1286
1287   samples = tester.GetHistogramSamplesSinceCreation(kUpdateTime);
1288   ASSERT_TRUE(samples);
1289   // 10 for insert adjust, 10 for update adjust, 100 for commit adjust, 1 for
1290   // measuring each of INSERT, UPDATE, and COMMIT.
1291   EXPECT_EQ(123, samples->sum());
1292
1293   samples = tester.GetHistogramSamplesSinceCreation(kCommitTime);
1294   ASSERT_TRUE(samples);
1295   // 100 for commit adjust, 1 for measuring COMMIT.
1296   EXPECT_EQ(101, samples->sum());
1297
1298   samples = tester.GetHistogramSamplesSinceCreation(kAutoCommitTime);
1299   EXPECT_EQ(0, samples->sum());
1300 }
1301
1302 }  // namespace