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Overview
Comment:Add test for the code that detects an inconsistent pair of wal-index headers to wal2.test.
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SHA1: 157feba10f7ac01eecf79715c44bb16c98958280
User & Date: dan 2010-06-04 12:22:35
Context
2010-06-04
15:59
Add an English language error message to corresponding to SQLITE_PROTOCOL. "locking protocol". check-in: ca327e32 user: dan tags: trunk
12:22
Add test for the code that detects an inconsistent pair of wal-index headers to wal2.test. check-in: 157feba1 user: dan tags: trunk
11:56
If an attempt to sync the database file as part of a checkpoint fails, do not update the shared "nBackfill" variable. Otherwise, another process could wrap the log and overwrite content before it is synced into the database. check-in: b813233d user: dan tags: trunk
Changes
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Changes to test/wal2.test.

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do_test wal2-7.1.3 {
  sqlite3 db2 test2.db
  execsql { PRAGMA wal_checkpoint } db2
  execsql { SELECT * FROM sqlite_master } db2
} {}
db close
db2 close

file delete -force test.db test.db-wal test.db-journal
do_test wal2-8.1.2 {
  sqlite3 db test.db
  execsql {
    PRAGMA auto_vacuum=OFF;
    PRAGMA page_size = 1024;
    PRAGMA journal_mode = WAL;
................................................................................
  }
} {}
do_test wal2-8.1.4 {
  sqlite3 db2 test.db
  execsql { SELECT * FROM t2 }
} {goodbye}
db2 close




























































finish_test







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do_test wal2-7.1.3 {
  sqlite3 db2 test2.db
  execsql { PRAGMA wal_checkpoint } db2
  execsql { SELECT * FROM sqlite_master } db2
} {}
db close
db2 close

file delete -force test.db test.db-wal test.db-journal
do_test wal2-8.1.2 {
  sqlite3 db test.db
  execsql {
    PRAGMA auto_vacuum=OFF;
    PRAGMA page_size = 1024;
    PRAGMA journal_mode = WAL;
................................................................................
  }
} {}
do_test wal2-8.1.4 {
  sqlite3 db2 test.db
  execsql { SELECT * FROM t2 }
} {goodbye}
db2 close
db close

#-------------------------------------------------------------------------
# Test that even if the checksums for both are valid, if the two copies
# of the wal-index header in the wal-index do not match, the client
# runs (or at least tries to run) database recovery.
#

proc get_name {method args} { set ::filename [lindex $args 0] }
testvfs tvfs
tvfs script get_name
tvfs filter xShmOpen

file delete -force test.db test.db-wal test.db-journal
do_test wal2-9.1 {
  sqlite3 db test.db -vfs tvfs
  execsql {
    PRAGMA journal_mode = WAL;
    CREATE TABLE x(y);
    INSERT INTO x VALUES('Barton');
    INSERT INTO x VALUES('Deakin');
  }
  set wal_index_hdr1 [string range [tvfs shm $::filename] 0 39]
  execsql { INSERT INTO x VALUES('Watson') }
} {}
do_test wal2-9.2 {
  sqlite3 db2 test.db -vfs tvfs
  execsql { SELECT * FROM x } db2
} {Barton Deakin Watson}
do_test wal2-9.3 {
  set wal_index_hdr2 [string range [tvfs shm $::filename] 0 39]
  set content [string range [tvfs shm $::filename] 80 end]
  set w [binary format a*a*a* $wal_index_hdr1 $wal_index_hdr1 $content]
  tvfs shm $::filename $w
  execsql { SELECT * FROM x } db2
} {Barton Deakin}
do_test wal2-9.4 {
  set w [binary format a*a*a* $wal_index_hdr2 $wal_index_hdr2 $content]
  tvfs shm $::filename $w
  execsql { SELECT * FROM x } db2
} {Barton Deakin Watson}
do_test wal2-9.5 {
  set w [binary format a*a*a* $wal_index_hdr1 $wal_index_hdr2 $content]
  tvfs shm $::filename $w
  execsql { SELECT * FROM x } db2
} {Barton Deakin Watson}
do_test wal2-9.6 {
  set w [binary format a*a*a* $wal_index_hdr2 $wal_index_hdr1 $content]
  tvfs shm $::filename $w
  execsql { SELECT * FROM x } db2
} {Barton Deakin Watson}
do_test wal2-9.7 {
  set w [binary format a*a*a* $wal_index_hdr1 $wal_index_hdr1 $content]
  tvfs shm $::filename $w
  execsql { SELECT * FROM x } db2
} {Barton Deakin}

db2 close
db close

finish_test