# 2002 March 6
#
# The author disclaims copyright to this source code.  In place of
# a legal notice, here is a blessing:
#
#    May you do good and not evil.
#    May you find forgiveness for yourself and forgive others.
#    May you share freely, never taking more than you give.
#
#***********************************************************************
# This file implements regression tests for SQLite library.
#
# This file implements tests for the PRAGMA command.
#
# $Id: pragma.test,v 1.73 2009/01/12 14:01:45 danielk1977 Exp $

set testdir [file dirname $argv0]
source $testdir/tester.tcl
set testprefix pragma

# Do not use a codec for tests in this file, as the database file is
# manipulated directly using tcl scripts (using the [hexio_write] command).
#
do_not_use_codec

# Test organization:
#
# pragma-1.*: Test cache_size, default_cache_size and synchronous on main db.
# pragma-2.*: Test synchronous on attached db.
# pragma-3.*: Test detection of table/index inconsistency by integrity_check.
# pragma-4.*: Test cache_size and default_cache_size on attached db.
# pragma-5.*: Test that pragma synchronous may not be used inside of a
#             transaction.
# pragma-6.*: Test schema-query pragmas.
# pragma-7.*: Miscellaneous tests.
# pragma-8.*: Test user_version and schema_version pragmas.
# pragma-9.*: Test temp_store and temp_store_directory.
# pragma-10.*: Test the count_changes pragma in the presence of triggers.
# pragma-11.*: Test the collation_list pragma.
# pragma-14.*: Test the page_count pragma.
# pragma-15.*: Test that the value set using the cache_size pragma is not
#              reset when the schema is reloaded.
# pragma-16.*: Test proxy locking
# pragma-20.*: Test data_store_directory.
# pragma-22.*: Test that "PRAGMA [db].integrity_check" respects the "db"
#              directive - if it is present.
#

ifcapable !pragma {
  finish_test
  return
}

# Capture the output of a pragma in a TEMP table.
#
proc capture_pragma {db tabname sql} {
  $db eval "DROP TABLE IF EXISTS temp.$tabname"
  set once 1
  $db eval $sql x {
    if {$once} {
      set once 0
      set ins "INSERT INTO $tabname VALUES"
      set crtab "CREATE TEMP TABLE $tabname "
      set sep "("
      foreach col $x(*) {
        append ins ${sep}\$x($col)
        append crtab ${sep}\"$col\"
        set sep ,
      }
      append ins )
      append crtab )
      $db eval $crtab
    }
    $db eval $ins
  }
}

# Delete the preexisting database to avoid the special setup
# that the "all.test" script does.
#
db close
delete_file test.db test.db-journal
delete_file test3.db test3.db-journal
sqlite3 db test.db; set DB [sqlite3_connection_pointer db]

# EVIDENCE-OF: R-13861-56665 PRAGMA schema.cache_size; PRAGMA
# schema.cache_size = pages; PRAGMA schema.cache_size = -kibibytes;
# Query or change the suggested maximum number of database disk pages
# that SQLite will hold in memory at once per open database file.
#
ifcapable pager_pragmas {
set DFLT_CACHE_SZ [db one {PRAGMA default_cache_size}]
set TEMP_CACHE_SZ [db one {PRAGMA temp.default_cache_size}]
do_test pragma-1.1 {
  execsql {
    PRAGMA cache_size;
    PRAGMA default_cache_size;
    PRAGMA synchronous;
  }
} [list $DFLT_CACHE_SZ $DFLT_CACHE_SZ 2]
do_test pragma-1.2 {
  # EVIDENCE-OF: R-42059-47211 If the argument N is positive then the
  # suggested cache size is set to N.
  execsql {
    PRAGMA synchronous=OFF;
    PRAGMA cache_size=1234;
    PRAGMA cache_size;
    PRAGMA default_cache_size;
    PRAGMA synchronous;
  }
} [list 1234 $DFLT_CACHE_SZ 0]
do_test pragma-1.3 {
  db close
  sqlite3 db test.db
  execsql {
    PRAGMA cache_size;
    PRAGMA default_cache_size;
    PRAGMA synchronous;
  }
} [list $DFLT_CACHE_SZ $DFLT_CACHE_SZ 2]
do_test pragma-1.4 {
  execsql {
    PRAGMA synchronous=OFF;
    PRAGMA cache_size;
    PRAGMA default_cache_size;
    PRAGMA synchronous;
  }
} [list $DFLT_CACHE_SZ $DFLT_CACHE_SZ 0]
do_test pragma-1.5 {
  execsql {
    PRAGMA cache_size=-4321;
    PRAGMA cache_size;
    PRAGMA default_cache_size;
    PRAGMA synchronous;
  }
} [list -4321 $DFLT_CACHE_SZ 0]
do_test pragma-1.6 {
  execsql {
    PRAGMA synchronous=ON;
    PRAGMA cache_size;
    PRAGMA default_cache_size;
    PRAGMA synchronous;
  }
} [list -4321 $DFLT_CACHE_SZ 1]
do_test pragma-1.7 {
  db close
  sqlite3 db test.db
  execsql {
    PRAGMA cache_size;
    PRAGMA default_cache_size;
    PRAGMA synchronous;
  }
} [list $DFLT_CACHE_SZ $DFLT_CACHE_SZ 2]
do_test pragma-1.8 {
  execsql {
    PRAGMA default_cache_size=-123;
    PRAGMA cache_size;
    PRAGMA default_cache_size;
    PRAGMA synchronous;
  }
} {123 123 2}
do_test pragma-1.9.1 {
  db close
  sqlite3 db test.db; set ::DB [sqlite3_connection_pointer db]
  execsql {
    PRAGMA cache_size;
    PRAGMA default_cache_size;
    PRAGMA synchronous;
  }
} {123 123 2}
ifcapable vacuum {
  do_test pragma-1.9.2 {
    execsql {
      VACUUM;
      PRAGMA cache_size;
      PRAGMA default_cache_size;
      PRAGMA synchronous;
    }
  } {123 123 2}
}
do_test pragma-1.10 {
  execsql {
    PRAGMA synchronous=NORMAL;
    PRAGMA cache_size;
    PRAGMA default_cache_size;
    PRAGMA synchronous;
  }
} {123 123 1}
do_test pragma-1.11.1 {
  execsql {
    PRAGMA synchronous=EXTRA;
    PRAGMA cache_size;
    PRAGMA default_cache_size;
    PRAGMA synchronous;
  }
} {123 123 3}
do_test pragma-1.11.2 {
  execsql {
    PRAGMA synchronous=FULL;
    PRAGMA cache_size;
    PRAGMA default_cache_size;
    PRAGMA synchronous;
  }
} {123 123 2}
do_test pragma-1.12 {
  db close
  sqlite3 db test.db; set ::DB [sqlite3_connection_pointer db]
  execsql {
    PRAGMA cache_size;
    PRAGMA default_cache_size;
    PRAGMA synchronous;
  }
} {123 123 2}

# Make sure the pragma handler understands numeric values in addition
# to keywords like "off" and "full".
#
do_test pragma-1.13 {
  execsql {
    PRAGMA synchronous=0;
    PRAGMA synchronous;
  }
} {0}
do_test pragma-1.14 {
  execsql {
    PRAGMA synchronous=2;
    PRAGMA synchronous;
  }
} {2}
do_test pragma-1.14.1 {
  execsql {
    PRAGMA synchronous=4;
    PRAGMA synchronous;
  }
} {4}
do_test pragma-1.14.2 {
  execsql {
    PRAGMA synchronous=3;
    PRAGMA synchronous;
  }
} {3}
do_test pragma-1.14.3 {
  execsql {
    PRAGMA synchronous=8;
    PRAGMA synchronous;
  }
} {0}
do_test pragma-1.14.4 {
  execsql {
    PRAGMA synchronous=10;
    PRAGMA synchronous;
  }
} {2}

do_execsql_test 1.15.1 {
  PRAGMA default_cache_size = 0;
}
do_execsql_test 1.15.2 {
  PRAGMA default_cache_size;
} $DFLT_CACHE_SZ
do_execsql_test 1.15.3 {
  PRAGMA default_cache_size = -500;
}
do_execsql_test 1.15.4 {
  PRAGMA default_cache_size;
} 500
do_execsql_test 1.15.3 {
  PRAGMA default_cache_size = 500;
}
do_execsql_test 1.15.4 {
  PRAGMA default_cache_size;
} 500
db close
hexio_write test.db 48 FFFFFF00
sqlite3 db test.db
do_execsql_test 1.15.4 {
  PRAGMA default_cache_size;
} 256
} ;# ifcapable pager_pragmas

# Test turning "flag" pragmas on and off.
#
ifcapable debug {
  # Pragma "vdbe_listing" is only available if compiled with SQLITE_DEBUG
  #
  do_test pragma-1.15 {
    execsql {
      PRAGMA vdbe_listing=YES;
      PRAGMA vdbe_listing;
    }
  } {1}
  do_test pragma-1.16 {
    execsql {
      PRAGMA vdbe_listing=NO;
      PRAGMA vdbe_listing;
    }
  } {0}
}

do_test pragma-1.17 {
  execsql {
    PRAGMA parser_trace=ON;
    PRAGMA parser_trace=OFF;
  }
} {}
do_test pragma-1.18 {
  execsql {
    PRAGMA bogus = -1234;  -- Parsing of negative values
  }
} {}

# Test modifying the safety_level of an attached database.
ifcapable pager_pragmas&&attach {
  do_test pragma-2.1 {
    forcedelete test2.db
    forcedelete test2.db-journal
    execsql {
      ATTACH 'test2.db' AS aux;
    } 
  } {}
  do_test pragma-2.2 {
    execsql {
      pragma aux.synchronous;
    } 
  } {2}
  do_test pragma-2.3 {
    execsql {
      pragma aux.synchronous = OFF;
      pragma aux.synchronous;
      pragma synchronous;
    } 
  } {0 2}
  do_test pragma-2.4 {
    execsql {
      pragma aux.synchronous = ON;
      pragma synchronous;
      pragma aux.synchronous;
    } 
  } {2 1}
} ;# ifcapable pager_pragmas

# Construct a corrupted index and make sure the integrity_check
# pragma finds it.
#
# These tests won't work if the database is encrypted
#
do_test pragma-3.1 {
  db close
  forcedelete test.db test.db-journal
  sqlite3 db test.db
  execsql {
    PRAGMA auto_vacuum=OFF;
    BEGIN;
    CREATE TABLE t2(a,b,c);
    CREATE INDEX i2 ON t2(a);
    INSERT INTO t2 VALUES(11,2,3);
    INSERT INTO t2 VALUES(22,3,4);
    COMMIT;
    SELECT rowid, * from t2;
  }
} {1 11 2 3 2 22 3 4}
ifcapable attach {
  if {![sqlite3 -has-codec] && $sqlite_options(integrityck)} {
    do_test pragma-3.2 {
      db eval {SELECT rootpage FROM sqlite_master WHERE name='i2'} break
      set pgsz [db eval {PRAGMA page_size}]
      # overwrite the header on the rootpage of the index in order to
      # make the index appear to be empty.
      #
      set offset [expr {$pgsz*($rootpage-1)}]
      hexio_write test.db $offset 0a00000000040000000000
      db close
      sqlite3 db test.db
      execsql {PRAGMA integrity_check}
    } {{wrong # of entries in index i2} {row 1 missing from index i2} {row 2 missing from index i2}}
    do_test pragma-3.3 {
      execsql {PRAGMA integrity_check=1}
    } {{wrong # of entries in index i2}}
    do_test pragma-3.4 {
      execsql {
        ATTACH DATABASE 'test.db' AS t2;
        PRAGMA integrity_check
      }
    } {{wrong # of entries in index i2} {row 1 missing from index i2} {row 2 missing from index i2} {wrong # of entries in index i2} {row 1 missing from index i2} {row 2 missing from index i2}}
    do_test pragma-3.5 {
      execsql {
        PRAGMA integrity_check=4
      }
    } {{wrong # of entries in index i2} {row 1 missing from index i2} {row 2 missing from index i2} {wrong # of entries in index i2}}
    do_catchsql_test pragma-3.5.2 {
      PRAGMA integrity_check='4'
    } {1 {no such table: 4}}
    do_catchsql_test pragma-3.6 {
      PRAGMA integrity_check=xyz
    } {1 {no such table: xyz}}
    do_catchsql_test pragma-3.6b {
      PRAGMA integrity_check=t2
    } {0 {{wrong # of entries in index i2} {row 1 missing from index i2} {row 2 missing from index i2}}}
    do_catchsql_test pragma-3.6c {
      PRAGMA integrity_check=sqlite_schema
    } {0 ok}
    do_test pragma-3.7 {
      execsql {
        PRAGMA integrity_check=0
      }
    } {{wrong # of entries in index i2} {row 1 missing from index i2} {row 2 missing from index i2} {wrong # of entries in index i2} {row 1 missing from index i2} {row 2 missing from index i2}}
  
    # Add additional corruption by appending unused pages to the end of
    # the database file testerr.db
    #
    do_test pragma-3.8 {
      execsql {DETACH t2}
      forcedelete testerr.db testerr.db-journal
      set out [open testerr.db w]
      fconfigure $out -translation binary
      set in [open test.db r]
      fconfigure $in -translation binary
      puts -nonewline $out [read $in]
      seek $in 0
      puts -nonewline $out [read $in]
      close $in
      close $out
      hexio_write testerr.db 28 00000000
      execsql {REINDEX t2}
      execsql {PRAGMA integrity_check}
    } {ok}
    do_test pragma-3.8.1 {
      execsql {PRAGMA quick_check}
    } {ok}
    do_test pragma-3.8.2 {
      execsql {PRAGMA QUICK_CHECK}
    } {ok}
    do_test pragma-3.9a {
      execsql {
        ATTACH 'testerr.db' AS t2;
        PRAGMA integrity_check
      }
    } {{*** in database t2 ***
Page 4: never used
Page 5: never used
Page 6: never used} {wrong # of entries in index i2} {row 1 missing from index i2} {row 2 missing from index i2}}
    do_execsql_test pragma-3.9b {
      PRAGMA t2.integrity_check=t2;
    } {{wrong # of entries in index i2} {row 1 missing from index i2} {row 2 missing from index i2}}
    do_execsql_test pragma-3.9c {
      PRAGMA t2.integrity_check=sqlite_schema;
    } {ok}
    do_test pragma-3.10 {
      execsql {
        PRAGMA integrity_check=1
      }
    } {{*** in database t2 ***
Page 4: never used}}
    do_test pragma-3.11 {
      execsql {
        PRAGMA integrity_check=5
      }
    } {{*** in database t2 ***
Page 4: never used
Page 5: never used
Page 6: never used} {wrong # of entries in index i2} {row 1 missing from index i2}}
    do_test pragma-3.12 {
      execsql {
        PRAGMA integrity_check=4
      }
    } {{*** in database t2 ***
Page 4: never used
Page 5: never used
Page 6: never used} {wrong # of entries in index i2}}
    do_test pragma-3.13 {
      execsql {
        PRAGMA integrity_check=3
      }
    } {{*** in database t2 ***
Page 4: never used
Page 5: never used
Page 6: never used}}
    do_test pragma-3.14 {
      execsql {
        PRAGMA integrity_check(2)
      }
    } {{*** in database t2 ***
Page 4: never used
Page 5: never used}}
    do_test pragma-3.15 {
      execsql {
        ATTACH 'testerr.db' AS t3;
        PRAGMA integrity_check
      }
    } {{*** in database t2 ***
Page 4: never used
Page 5: never used
Page 6: never used} {wrong # of entries in index i2} {row 1 missing from index i2} {row 2 missing from index i2} {*** in database t3 ***
Page 4: never used
Page 5: never used
Page 6: never used} {wrong # of entries in index i2} {row 1 missing from index i2} {row 2 missing from index i2}}
    do_test pragma-3.16 {
      execsql {
        PRAGMA integrity_check(10)
      }
    } {{*** in database t2 ***
Page 4: never used
Page 5: never used
Page 6: never used} {wrong # of entries in index i2} {row 1 missing from index i2} {row 2 missing from index i2} {*** in database t3 ***
Page 4: never used
Page 5: never used
Page 6: never used} {wrong # of entries in index i2}}
    do_test pragma-3.17 {
      execsql {
        PRAGMA integrity_check=8
      }
    } {{*** in database t2 ***
Page 4: never used
Page 5: never used
Page 6: never used} {wrong # of entries in index i2} {row 1 missing from index i2} {row 2 missing from index i2} {*** in database t3 ***
Page 4: never used
Page 5: never used}}
    do_test pragma-3.18 {
      execsql {
        PRAGMA integrity_check=4
      }
    } {{*** in database t2 ***
Page 4: never used
Page 5: never used
Page 6: never used} {wrong # of entries in index i2}}
  }
  do_test pragma-3.19 {
    catch {db close}
    forcedelete test.db test.db-journal
    sqlite3 db test.db
    db eval {PRAGMA integrity_check}
  } {ok}
}

# Verify that PRAGMA integrity_check catches UNIQUE and NOT NULL
# constraint violations.
#
ifcapable altertable {
  sqlite3_db_config db DEFENSIVE 0
    do_execsql_test pragma-3.20 {
      CREATE TABLE t1(a,b);
      CREATE INDEX t1a ON t1(a);
      INSERT INTO t1 VALUES(1,1),(2,2),(3,3),(2,4),(NULL,5),(NULL,6);
      PRAGMA writable_schema=ON;
      UPDATE sqlite_master SET sql='CREATE UNIQUE INDEX t1a ON t1(a)'
        WHERE name='t1a';
      UPDATE sqlite_master SET sql='CREATE TABLE t1(a NOT NULL,b)'
        WHERE name='t1';
      PRAGMA writable_schema=OFF;
      ALTER TABLE t1 RENAME TO t1x;
      PRAGMA integrity_check;
    } {{non-unique entry in index t1a} {NULL value in t1x.a} {non-unique entry in index t1a} {NULL value in t1x.a}}
  do_execsql_test pragma-3.21 {
    PRAGMA integrity_check(3);
  } {{non-unique entry in index t1a} {NULL value in t1x.a} {non-unique entry in index t1a}}
  do_execsql_test pragma-3.22 {
    PRAGMA integrity_check(2);
  } {{non-unique entry in index t1a} {NULL value in t1x.a}}
  do_execsql_test pragma-3.23 {
    PRAGMA integrity_check(1);
  } {{non-unique entry in index t1a}}

  # forum post https://sqlite.org/forum/forumpost/ee4f6fa5ab
  do_execsql_test pragma-3.24 {
    DROP TABLE IF EXISTS t1;
    CREATE TABLE t1(a);
    INSERT INTO t1 VALUES (1);
    ALTER TABLE t1 ADD COLUMN b NOT NULL DEFAULT 0.25;
    SELECT * FROM t1;
    PRAGMA integrity_check(t1);
  } {1 0.25 ok}
  do_execsql_test pragma-3.25 {
    ALTER TABLE t1 ADD COLUMN c CHECK (1);
    SELECT * FROM t1;
    PRAGMA integrity_check(t1);
  } {1 0.25 {} ok}
}

# PRAGMA integrity check (or more specifically the sqlite3BtreeCount()
# interface) used to leave index cursors in an inconsistent state
# which could result in an assertion fault in sqlite3BtreeKey()
# called from saveCursorPosition() if content is removed from the
# index while the integrity_check is still running.  This test verifies
# that problem has been fixed.
#
do_test pragma-3.30 {
  catch { db close }
  delete_file test.db
  sqlite3 db test.db
  db eval {
    CREATE TABLE t1(a,b,c);
    WITH RECURSIVE
      c(i) AS (VALUES(1) UNION ALL SELECT i+1 FROM c WHERE i<100)
    INSERT INTO t1(a,b,c) SELECT i, printf('xyz%08x',i), 2000-i FROM c;
    CREATE INDEX t1a ON t1(a);
    CREATE INDEX t1bc ON t1(b,c);
  }
  db eval {PRAGMA integrity_check} {
     db eval {DELETE FROM t1}
  }
} {}

# The values stored in indexes must be byte-for-byte identical to the
# values stored in tables.
#
reset_db
do_execsql_test pragma-3.40 {
  CREATE TABLE t1(
    a INTEGER PRIMARY KEY,
    b TEXT COLLATE nocase,
    c INT COLLATE nocase,
    d TEXT
  );
  INSERT INTO t1(a,b,c,d) VALUES
    (1, 'one','one','one'),
    (2, 'two','two','two'),
    (3, 'three','three','three'),
    (4, 'four','four','four'),
    (5, 'five','five','five');
  CREATE INDEX t1bcd ON t1(b,c,d);
  CREATE TABLE t2(
    a INTEGER PRIMARY KEY,
    b TEXT COLLATE nocase,
    c INT COLLATE nocase,
    d TEXT
  );
  INSERT INTO t2(a,b,c,d) VALUES
    (1, 'one','one','one'),
    (2, 'two','two','TWO'),
    (3, 'three','THREE','three'),
    (4, 'FOUR','four','four'),
    (5, 'FIVE','FIVE','five');
  CREATE INDEX t2bcd ON t2(b,c,d);
  CREATE TEMP TABLE saved_schema AS SELECT name, rootpage FROM sqlite_schema;
  PRAGMA writable_schema=ON;
  UPDATE sqlite_schema
     SET rootpage=(SELECT rootpage FROM saved_schema WHERE name='t2bcd')
   WHERE name='t1bcd';
  UPDATE sqlite_schema
     SET rootpage=(SELECT rootpage FROM saved_schema WHERE name='t1bcd')
   WHERE name='t2bcd';
  PRAGMA Writable_schema=RESET;
}
ifcapable vtab {
  do_execsql_test pragma-3.41 {
    SELECT integrity_check AS x FROM pragma_integrity_check ORDER BY 1;
  } {
    {row 2 missing from index t1bcd}
    {row 2 missing from index t2bcd}
    {row 3 values differ from index t1bcd}
    {row 3 values differ from index t2bcd}
    {row 4 values differ from index t1bcd}
    {row 4 values differ from index t2bcd}
    {row 5 values differ from index t1bcd}
    {row 5 values differ from index t2bcd}
  }
}
db eval {DROP TABLE t2}

# Test modifying the cache_size of an attached database.
ifcapable pager_pragmas&&attach {
do_test pragma-4.1 {
  execsql {
    ATTACH 'test2.db' AS aux;
    pragma aux.cache_size;
    pragma aux.default_cache_size;
  } 
} [list $DFLT_CACHE_SZ $DFLT_CACHE_SZ]
do_test pragma-4.2 {
  execsql {
    pragma aux.cache_size = 50;
    pragma aux.cache_size;
    pragma aux.default_cache_size;
  } 
} [list 50 $DFLT_CACHE_SZ]
do_test pragma-4.3 {
  execsql {
    pragma aux.default_cache_size = 456;
    pragma aux.cache_size;
    pragma aux.default_cache_size;
  } 
} {456 456}
do_test pragma-4.4 {
  execsql {
    pragma cache_size;
    pragma default_cache_size;
  } 
} [list $DFLT_CACHE_SZ $DFLT_CACHE_SZ]
do_test pragma-4.5 {
  execsql {
    DETACH aux;
    ATTACH 'test3.db' AS aux;
    pragma aux.cache_size;
    pragma aux.default_cache_size;
  } 
} [list $DFLT_CACHE_SZ $DFLT_CACHE_SZ]
do_test pragma-4.6 {
  execsql {
    DETACH aux;
    ATTACH 'test2.db' AS aux;
    pragma aux.cache_size;
    pragma aux.default_cache_size;
  } 
} {456 456}
} ;# ifcapable pager_pragmas

# Test that modifying the sync-level in the middle of a transaction is
# disallowed.
ifcapable pager_pragmas {
do_test pragma-5.0 {
  execsql {
    pragma synchronous;
  } 
} {2}
do_test pragma-5.1 {
  catchsql {
    BEGIN;
    pragma synchronous = OFF;
  } 
} {1 {Safety level may not be changed inside a transaction}}
do_test pragma-5.2 {
  execsql {
    pragma synchronous;
  } 
} {2}
catchsql {COMMIT;}
} ;# ifcapable pager_pragmas

# Test schema-query pragmas
#
ifcapable schema_pragmas {
ifcapable tempdb&&attach {
  do_test pragma-6.1 {
    set res {}
    execsql {SELECT * FROM sqlite_temp_master}
    foreach {idx name file} [execsql {pragma database_list}] {
      lappend res $idx $name
    }
    set res
  } {0 main 1 temp 2 aux}
}
do_test pragma-6.2 {
  execsql {
    CREATE TABLE t2(a TYPE_X, b [TYPE_Y], c "TYPE_Z");
    pragma table_info(t2)
  }
} {0 a TYPE_X 0 {} 0 1 b TYPE_Y 0 {} 0 2 c TYPE_Z 0 {} 0}
do_test pragma-6.2.1 {
  execsql {
    pragma table_info;
  }
} {}
db nullvalue <<NULL>>
do_test pragma-6.2.2 {
  execsql {
    CREATE TABLE t5(
      a TEXT DEFAULT CURRENT_TIMESTAMP, 
      b DEFAULT (5+3),
      c TEXT,
      d INTEGER DEFAULT NULL,
      e TEXT DEFAULT '',
      UNIQUE(b,c,d),
      PRIMARY KEY(e,b,c)
    );
    PRAGMA table_info(t5);
  }
} {0 a TEXT 0 CURRENT_TIMESTAMP 0 1 b {} 0 5+3 2 2 c TEXT 0 <<NULL>> 3 3 d INTEGER 0 NULL 0 4 e TEXT 0 '' 1}
db nullvalue {}
do_test pragma-6.2.3 {
  execsql {
    CREATE TABLE t2_3(a,b INTEGER PRIMARY KEY,c);
    pragma table_info(t2_3)
  }
} {0 a {} 0 {} 0 1 b INTEGER 0 {} 1 2 c {} 0 {} 0}
ifcapable {foreignkey} {
  do_test pragma-6.3.1 {
    execsql {
      CREATE TABLE t3(a int references t2(b), b UNIQUE);
      pragma foreign_key_list(t3);
    }
  } {0 0 t2 a b {NO ACTION} {NO ACTION} NONE}
  do_test pragma-6.3.2 {
    execsql {
      pragma foreign_key_list;
    }
  } {}
  do_test pragma-6.3.3 {
    execsql {
      pragma foreign_key_list(t3_bogus);
    }
  } {}
  do_test pragma-6.3.4 {
    execsql {
      pragma foreign_key_list(t5);
    }
  } {}
  do_test pragma-6.4 {
    capture_pragma db out {
      pragma index_list(t3);
    }
    db eval {SELECT seq, "name", "unique" FROM out ORDER BY seq}
  } {0 sqlite_autoindex_t3_1 1}
}
ifcapable {!foreignkey} {
  execsql {CREATE TABLE t3(a,b UNIQUE)}
}
do_test pragma-6.5.1 {
  execsql {
    CREATE INDEX t3i1 ON t3(a,b);
  }
  capture_pragma db out {
    pragma index_info(t3i1);
  }
  db eval {SELECT seqno, cid, name FROM out ORDER BY seqno}
} {0 0 a 1 1 b}

# EVIDENCE-OF: R-23114-21695 The auxiliary index-columns are not shown
# by the index_info pragma, but they are listed by the index_xinfo
# pragma.
#
do_test pragma-6.5.1b {
  capture_pragma db out {PRAGMA index_xinfo(t3i1)}
  db eval {SELECT seqno, cid, name FROM out ORDER BY seqno}
} {0 0 a 1 1 b 2 -1 {}}


# EVIDENCE-OF: R-29448-60346 PRAGMA schema.index_info(index-name); This
# pragma returns one row for each key column in the named index.
#
# (The first column of output from PRAGMA index_info is...)
# EVIDENCE-OF: R-34186-52914 The rank of the column within the index. (0
# means left-most.)
#
# (The second column of output from PRAGMA index_info is...)
# EVIDENCE-OF: R-65019-08383 The rank of the column within the table
# being indexed.
#
# (The third column of output from PRAGMA index_info is...)
# EVIDENCE-OF: R-09773-34266 The name of the column being indexed.
#
do_execsql_test pragma-6.5.1c {
  CREATE INDEX t3i2 ON t3(b,a);
  PRAGMA index_info='t3i2';
  DROP INDEX t3i2;
} {0 1 b 1 0 a}

do_test pragma-6.5.2 {
  execsql {
    pragma index_info(t3i1_bogus);
  }
} {}

ifcapable tempdb {
  # Test for ticket #3320. When a temp table of the same name exists, make
  # sure the schema of the main table can still be queried using 
  # "pragma table_info":
  do_test pragma-6.6.1 {
    execsql {
      CREATE TABLE trial(col_main);
      CREATE TEMP TABLE trial(col_temp);
    }
  } {}
  do_test pragma-6.6.2 {
    execsql {
      PRAGMA table_info(trial);
    }
  } {0 col_temp {} 0 {} 0}
  do_test pragma-6.6.3 {
    execsql {
      PRAGMA temp.table_info(trial);
    }
  } {0 col_temp {} 0 {} 0}
  do_test pragma-6.6.4 {
    execsql {
      PRAGMA main.table_info(trial);
    }
  } {0 col_main {} 0 {} 0}
}

do_test pragma-6.7 {
  execsql {
    CREATE TABLE test_table(
      one INT NOT NULL DEFAULT -1, 
      two text,
      three VARCHAR(45, 65) DEFAULT 'abcde',
      four REAL DEFAULT X'abcdef',
      five DEFAULT CURRENT_TIME
    );
  }
  capture_pragma db out {PRAGMA table_info(test_table)}
  db eval {SELECT cid, "name", type, "notnull", dflt_value, pk FROM out
            ORDER BY cid}
} [concat \
  {0 one INT 1 -1 0} \
  {1 two TEXT 0 {} 0} \
  {2 three {VARCHAR(45, 65)} 0 'abcde' 0} \
  {3 four REAL 0 X'abcdef' 0} \
  {4 five {} 0 CURRENT_TIME 0} \
]
do_test pragma-6.8 {
  execsql {
    CREATE TABLE t68(a,b,c,PRIMARY KEY(a,b,a,c));
    PRAGMA table_info(t68);
  }
} [concat \
  {0 a {} 0 {} 1} \
  {1 b {} 0 {} 2} \
  {2 c {} 0 {} 4} \
]
} ;# ifcapable schema_pragmas
# Miscellaneous tests
#
ifcapable schema_pragmas {
# EVIDENCE-OF: R-64103-17776 PRAGMA schema.index_list(table-name); This
# pragma returns one row for each index associated with the given table.
#
do_test pragma-7.1.1 {
  # Make sure a pragma knows to read the schema if it needs to
  db close
  sqlite3 db test.db
  capture_pragma db out "PRAGMA index_list(t3)"
  db eval {SELECT name, "origin" FROM out ORDER BY name DESC}
} {t3i1 c sqlite_autoindex_t3_1 u}
do_test pragma-7.1.2 {
  execsql {
    pragma index_list(t3_bogus);
  }
} {}
} ;# ifcapable schema_pragmas
ifcapable {utf16} {
  if {[permutation] == ""} {
    do_test pragma-7.2 {
      db close
      sqlite3 db test.db
      catchsql {
        pragma encoding=bogus;
      }
    } {1 {unsupported encoding: bogus}}
  }
}
ifcapable tempdb {
  do_test pragma-7.3 {
    db close
    sqlite3 db test.db
    execsql {
      pragma lock_status;
    }
  } {main unlocked temp closed}
} else {
  do_test pragma-7.3 {
    db close
    sqlite3 db test.db
    execsql {
      pragma lock_status;
    }
  } {main unlocked}
}


#----------------------------------------------------------------------
# Test cases pragma-8.* test the "PRAGMA schema_version" and "PRAGMA
# user_version" statements.
#
# pragma-8.1: PRAGMA schema_version
# pragma-8.2: PRAGMA user_version
#

ifcapable schema_version {

# First check that we can set the schema version and then retrieve the
# same value.
do_test pragma-8.1.1 {
  execsql {
    PRAGMA schema_version = 105;
  }
} {}
do_test pragma-8.1.2 {
  execsql2 {
    PRAGMA schema_version;
  }
} {schema_version 105}
sqlite3_db_config db DEFENSIVE 1
do_execsql_test pragma-8.1.3 {
  PRAGMA schema_version = 106;
  PRAGMA schema_version;
} 105
sqlite3_db_config db DEFENSIVE 0
do_execsql_test pragma-8.1.4 {
  PRAGMA schema_version = 106;
  PRAGMA schema_version;
} 106

# Check that creating a table modifies the schema-version (this is really
# to verify that the value being read is in fact the schema version).
do_test pragma-8.1.5 {
  execsql {
    CREATE TABLE t4(a, b, c);
    INSERT INTO t4 VALUES(1, 2, 3);
    SELECT * FROM t4;
  }
} {1 2 3}
do_test pragma-8.1.6 {
  execsql {
    PRAGMA schema_version;
  }
} 107

# Now open a second connection to the database. Ensure that changing the
# schema-version using the first connection forces the second connection
# to reload the schema. This has to be done using the C-API test functions,
# because the TCL API accounts for SCHEMA_ERROR and retries the query.
do_test pragma-8.1.7 {
  sqlite3 db2 test.db; set ::DB2 [sqlite3_connection_pointer db2]
  execsql {
    SELECT * FROM t4;
  } db2
} {1 2 3}
do_test pragma-8.1.8 {
  execsql {
    PRAGMA schema_version = 108;
  }
} {}
do_test pragma-8.1.9 {
  set ::STMT [sqlite3_prepare $::DB2 "SELECT * FROM t4" -1 DUMMY]
  sqlite3_step $::STMT
} SQLITE_ERROR
do_test pragma-8.1.10 {
  sqlite3_finalize $::STMT
} SQLITE_SCHEMA

# Make sure the schema-version can be manipulated in an attached database.
forcedelete test2.db
forcedelete test2.db-journal
ifcapable attach {
  do_test pragma-8.1.11 {
    execsql {
      ATTACH 'test2.db' AS aux;
      CREATE TABLE aux.t1(a, b, c);
      PRAGMA aux.schema_version = 205;
    }
  } {}
  do_test pragma-8.1.12 {
    execsql {
      PRAGMA aux.schema_version;
    }
  } 205
}
do_test pragma-8.1.13 {
  execsql {
    PRAGMA schema_version;
  }
} 108

# And check that modifying the schema-version in an attached database
# forces the second connection to reload the schema.
ifcapable attach {
  do_test pragma-8.1.14 {
    sqlite3 db2 test.db; set ::DB2 [sqlite3_connection_pointer db2]
    execsql {
      ATTACH 'test2.db' AS aux;
      SELECT * FROM aux.t1;
    } db2
  } {}
  do_test pragma-8.1.15 {
    execsql {
      PRAGMA aux.schema_version = 206;
    }
  } {}
  do_test pragma-8.1.16 {
    set ::STMT [sqlite3_prepare $::DB2 "SELECT * FROM aux.t1" -1 DUMMY]
    sqlite3_step $::STMT
  } SQLITE_ERROR
  do_test pragma-8.1.17 {
    sqlite3_finalize $::STMT
  } SQLITE_SCHEMA
  do_test pragma-8.1.18 {
    db2 close
  } {}
}

# Now test that the user-version can be read and written (and that we aren't
# accidentally manipulating the schema-version instead).
do_test pragma-8.2.1 {
  execsql2 {
    PRAGMA user_version;
  }
} {user_version 0}
do_test pragma-8.2.2 {
  execsql {
    PRAGMA user_version = 2;
  }
} {}
do_test pragma-8.2.3.1 {
  execsql2 {
    PRAGMA user_version;
  }
} {user_version 2}
do_test pragma-8.2.3.2 {
  db close
  sqlite3 db test.db
  execsql {
    PRAGMA user_version;
  }
} {2}
do_test pragma-8.2.4.1 {
  execsql {
    PRAGMA schema_version;
  }
} {108}
ifcapable vacuum {
  do_test pragma-8.2.4.2 {
    execsql {
      VACUUM;
      PRAGMA user_version;
    }
  } {2}
  do_test pragma-8.2.4.3 {
    execsql {
      PRAGMA schema_version;
    }
  } {109}
}

ifcapable attach {
  db eval {ATTACH 'test2.db' AS aux}
  
  # Check that the user-version in the auxilary database can be manipulated (
  # and that we aren't accidentally manipulating the same in the main db).
  do_test pragma-8.2.5 {
    execsql {
      PRAGMA aux.user_version;
    }
  } {0}
  do_test pragma-8.2.6 {
    execsql {
      PRAGMA aux.user_version = 3;
    }
  } {}
  do_test pragma-8.2.7 {
    execsql {
      PRAGMA aux.user_version;
    }
  } {3}
  do_test pragma-8.2.8 {
    execsql {
      PRAGMA main.user_version;
    }
  } {2}
  
  # Now check that a ROLLBACK resets the user-version if it has been modified
  # within a transaction.
  do_test pragma-8.2.9 {
    execsql {
      BEGIN;
      PRAGMA aux.user_version = 10;
      PRAGMA user_version = 11;
    }
  } {}
  do_test pragma-8.2.10 {
    execsql {
      PRAGMA aux.user_version;
    }
  } {10}
  do_test pragma-8.2.11 {
    execsql {
      PRAGMA main.user_version;
    }
  } {11}
  do_test pragma-8.2.12 {
    execsql {
      ROLLBACK;
      PRAGMA aux.user_version;
    }
  } {3}
  do_test pragma-8.2.13 {
    execsql {
      PRAGMA main.user_version;
    }
  } {2}
}

# Try a negative value for the user-version
do_test pragma-8.2.14 {
  execsql {
    PRAGMA user_version = -450;
  }
} {}
do_test pragma-8.2.15 {
  execsql {
    PRAGMA user_version;
  }
} {-450}
} ; # ifcapable schema_version

# Check to see if TEMP_STORE is memory or disk.  Return strings
# "memory" or "disk" as appropriate.
#
proc check_temp_store {} {
  db eval {
    PRAGMA temp.cache_size = 1;
    CREATE TEMP TABLE IF NOT EXISTS a(b);
    DELETE FROM a;
    INSERT INTO a VALUES(randomblob(1000));
    INSERT INTO a SELECT * FROM a;
    INSERT INTO a SELECT * FROM a;
    INSERT INTO a SELECT * FROM a;
    INSERT INTO a SELECT * FROM a;
    INSERT INTO a SELECT * FROM a;
    INSERT INTO a SELECT * FROM a;
    INSERT INTO a SELECT * FROM a;
    INSERT INTO a SELECT * FROM a;
  }
  db eval {PRAGMA database_list} {
    if {$name=="temp"} {
      set bt [btree_from_db db 1]
      if {[btree_ismemdb $bt]} {
        return "memory"
      }
      return "disk"
    }
  }
  return "unknown"
}

# Application_ID
#
do_test pragma-8.3.1 {
  execsql {
    PRAGMA application_id;
  }
} {0}
do_test pragma-8.3.2 {
  execsql {PRAGMA Application_ID(12345); PRAGMA application_id;}
} {12345}

# Test temp_store and temp_store_directory pragmas
#
ifcapable pager_pragmas {
do_test pragma-9.1 {
  db close
  sqlite3 db test.db
  execsql {
    PRAGMA temp_store;
  }
} {0}
if {$TEMP_STORE<=1} {
  do_test pragma-9.1.1 {
    check_temp_store
  } {disk}
} else {
  do_test pragma-9.1.1 {
    check_temp_store
  } {memory}
}

do_test pragma-9.2 {
  db close
  sqlite3 db test.db
  execsql {
    PRAGMA temp_store=file;
    PRAGMA temp_store;
  }
} {1}
if {$TEMP_STORE==3} {
  # When TEMP_STORE is 3, always use memory regardless of pragma settings.
  do_test pragma-9.2.1 {
    check_temp_store
  } {memory}
} else {
  do_test pragma-9.2.1 {
    check_temp_store
  } {disk}
}

do_test pragma-9.3 {
  db close
  sqlite3 db test.db
  execsql {
    PRAGMA temp_store=memory;
    PRAGMA temp_store;
  }
} {2}
if {$TEMP_STORE==0} {
  # When TEMP_STORE is 0, always use the disk regardless of pragma settings.
  do_test pragma-9.3.1 {
    check_temp_store
  } {disk}
} else {
  do_test pragma-9.3.1 {
    check_temp_store
  } {memory}
}

do_test pragma-9.4 {
  execsql {
    PRAGMA temp_store_directory;
  }
} {}
ifcapable wsd {
  do_test pragma-9.5 {
    set pwd [string map {' ''} [file nativename [get_pwd]]]
    execsql "
      PRAGMA temp_store_directory='$pwd';
    "
  } {}
  do_test pragma-9.6 {
    execsql { 
      PRAGMA temp_store_directory;
    }
  } [list [file nativename [get_pwd]]]
  do_test pragma-9.7 {
    catchsql { 
      PRAGMA temp_store_directory='/NON/EXISTENT/PATH/FOOBAR';
    }
  } {1 {not a writable directory}}
  do_test pragma-9.8 {
    execsql { 
      PRAGMA temp_store_directory='';
    }
  } {}
  if {![info exists TEMP_STORE] || $TEMP_STORE<=1} {
    ifcapable tempdb {
      do_test pragma-9.9 {
        execsql { 
          PRAGMA temp_store_directory;
          PRAGMA temp_store=FILE;
          CREATE TEMP TABLE temp_store_directory_test(a integer);
          INSERT INTO temp_store_directory_test values (2);
          SELECT * FROM temp_store_directory_test;
        }
      } {2}
      do_test pragma-9.10 {
        catchsql "
          PRAGMA temp_store_directory='$pwd';
          SELECT * FROM temp_store_directory_test;
        "
      } {1 {no such table: temp_store_directory_test}}
    }
  }
}
do_test pragma-9.11 {
  execsql {
    PRAGMA temp_store = 0;
    PRAGMA temp_store;
  }
} {0}
do_test pragma-9.12 {
  execsql {
    PRAGMA temp_store = 1;
    PRAGMA temp_store;
  }
} {1}
do_test pragma-9.13 {
  execsql {
    PRAGMA temp_store = 2;
    PRAGMA temp_store;
  }
} {2}
do_test pragma-9.14 {
  execsql {
    PRAGMA temp_store = 3;
    PRAGMA temp_store;
  }
} {0}
do_test pragma-9.15 {
  catchsql {
    BEGIN EXCLUSIVE;
    CREATE TEMP TABLE temp_table(t);
    INSERT INTO temp_table VALUES('valuable data');
    PRAGMA temp_store = 1;
  }
} {1 {temporary storage cannot be changed from within a transaction}}
do_test pragma-9.16 {
  execsql {
    SELECT * FROM temp_table;
    COMMIT;
  }
} {{valuable data}}

do_test pragma-9.17 {
  execsql {
    INSERT INTO temp_table VALUES('valuable data II');
    SELECT * FROM temp_table;
  }
} {{valuable data} {valuable data II}}

do_test pragma-9.18 {
  set rc [catch {
    db eval {SELECT t FROM temp_table} {
      execsql {pragma temp_store = 1}
    }
  } msg]
  list $rc $msg
} {1 {temporary storage cannot be changed from within a transaction}}

} ;# ifcapable pager_pragmas

ifcapable trigger {

do_test pragma-10.0 {
  catchsql {
    DROP TABLE main.t1;
  }
  execsql {
    PRAGMA count_changes = 1;

    CREATE TABLE t1(a PRIMARY KEY);
    CREATE TABLE t1_mirror(a);
    CREATE TABLE t1_mirror2(a);
    CREATE TRIGGER t1_bi BEFORE INSERT ON t1 BEGIN 
      INSERT INTO t1_mirror VALUES(new.a);
    END;
    CREATE TRIGGER t1_ai AFTER INSERT ON t1 BEGIN 
      INSERT INTO t1_mirror2 VALUES(new.a);
    END;
    CREATE TRIGGER t1_bu BEFORE UPDATE ON t1 BEGIN 
      UPDATE t1_mirror SET a = new.a WHERE a = old.a;
    END;
    CREATE TRIGGER t1_au AFTER UPDATE ON t1 BEGIN 
      UPDATE t1_mirror2 SET a = new.a WHERE a = old.a;
    END;
    CREATE TRIGGER t1_bd BEFORE DELETE ON t1 BEGIN 
      DELETE FROM t1_mirror WHERE a = old.a;
    END;
    CREATE TRIGGER t1_ad AFTER DELETE ON t1 BEGIN 
      DELETE FROM t1_mirror2 WHERE a = old.a;
    END;
  }
} {}

do_test pragma-10.1 {
  execsql {
    INSERT INTO t1 VALUES(randstr(10,10));
  }
} {1}
do_test pragma-10.2 {
  execsql {
    UPDATE t1 SET a = randstr(10,10);
  }
} {1}
do_test pragma-10.3 {
  execsql {
    DELETE FROM t1;
  }
} {1}

} ;# ifcapable trigger

ifcapable schema_pragmas {
  do_test pragma-11.1 {
    execsql2 {
      pragma collation_list;
    }
  } {seq 0 name RTRIM seq 1 name NOCASE seq 2 name BINARY}
  do_test pragma-11.2 {
    db collate New_Collation blah...
    execsql {
      pragma collation_list;
    }
  } {0 New_Collation 1 RTRIM 2 NOCASE 3 BINARY}
}

ifcapable schema_pragmas&&tempdb {
  do_test pragma-12.1 {
    sqlite3 db2 test.db
    execsql {
      PRAGMA temp.table_info('abc');
    } db2
  } {}
  db2 close

  do_test pragma-12.2 {
    sqlite3 db2 test.db
    execsql {
      PRAGMA temp.default_cache_size = 200;
      PRAGMA temp.default_cache_size;
    } db2
  } {200}
  db2 close

  do_test pragma-12.3 {
    sqlite3 db2 test.db
    execsql {
      PRAGMA temp.cache_size = 400;
      PRAGMA temp.cache_size;
    } db2
  } {400}
  db2 close
}

ifcapable bloblit {

do_test pragma-13.1 {
  execsql {
    DROP TABLE IF EXISTS t4;
    PRAGMA vdbe_trace=on;
    PRAGMA vdbe_listing=on;
    PRAGMA sql_trace=on;
    CREATE TABLE t4(a INTEGER PRIMARY KEY,b);
    INSERT INTO t4(b) VALUES(x'0123456789abcdef0123456789abcdef0123456789');
    INSERT INTO t4(b) VALUES(randstr(30,30));
    INSERT INTO t4(b) VALUES(1.23456);
    INSERT INTO t4(b) VALUES(NULL);
    INSERT INTO t4(b) VALUES(0);
    INSERT INTO t4(b) SELECT b||b||b||b FROM t4;
    SELECT * FROM t4;
  }
  execsql {
    PRAGMA vdbe_trace=off;
    PRAGMA vdbe_listing=off;
    PRAGMA sql_trace=off;
  }
} {}

} ;# ifcapable bloblit 

ifcapable pager_pragmas {
  db close
  forcedelete test.db
  sqlite3 db test.db
 
  # EVIDENCE-OF: R-15672-33611 PRAGMA schema.page_count; Return the total
  # number of pages in the database file.
  #
  do_test pragma-14.1 {
    execsql { pragma auto_vacuum = 0 }
    execsql { pragma page_count; pragma main.page_count }
  } {0 0}

  do_test pragma-14.2 {
    execsql { 
      CREATE TABLE abc(a, b, c);
      PRAGMA page_count;
      PRAGMA main.page_count;
      PRAGMA temp.page_count;
    }
  } {2 2 0}
  do_test pragma-14.2uc {
    execsql {pragma PAGE_COUNT}
  } {2}

  do_test pragma-14.3 {
    execsql { 
      BEGIN;
      CREATE TABLE def(a, b, c);
      PRAGMA page_count;
    }
  } {3}
  do_test pragma-14.3uc {
    execsql {pragma PAGE_COUNT}
  } {3}

  do_test pragma-14.4 {
    set page_size [db one {pragma page_size}]
    expr [file size test.db] / $page_size
  } {2}

  do_test pragma-14.5 {
    execsql {
      ROLLBACK;
      PRAGMA page_count;
    }
  } {2}

  do_test pragma-14.6 {
    forcedelete test2.db
    sqlite3 db2 test2.db
    execsql {
      PRAGMA auto_vacuum = 0;
      CREATE TABLE t1(a, b, c);
      CREATE TABLE t2(a, b, c);
      CREATE TABLE t3(a, b, c);
      CREATE TABLE t4(a, b, c);
    } db2
    db2 close
    execsql {
      ATTACH 'test2.db' AS aux;
      PRAGMA aux.page_count;
    } 
  } {5}
  do_test pragma-14.6uc {
    execsql {pragma AUX.PAGE_COUNT}
  } {5}
}

# Test that the value set using the cache_size pragma is not reset when the
# schema is reloaded.
#
ifcapable pager_pragmas {
  db close
  sqlite3 db test.db
  do_test pragma-15.1 {
    execsql {
      PRAGMA cache_size=59;
      PRAGMA cache_size;
    }
  } {59}
  do_test pragma-15.2 {
    sqlite3 db2 test.db
    execsql {
      CREATE TABLE newtable(a, b, c);
    } db2
    db2 close
  } {}
  do_test pragma-15.3 {
    # Evaluating this statement will cause the schema to be reloaded (because
    # the schema was changed by another connection in pragma-15.2). At one
    # point there was a bug that reset the cache_size to its default value
    # when this happened. 
    execsql { SELECT * FROM sqlite_master }
    execsql { PRAGMA cache_size }
  } {59}
}

# Reset the sqlite3_temp_directory variable for the next run of tests:
sqlite3 dbX :memory:
dbX eval {PRAGMA temp_store_directory = ""}
dbX close

ifcapable lock_proxy_pragmas&&prefer_proxy_locking {
  set sqlite_hostid_num 1

  set using_proxy 0
  foreach {name value} [array get env SQLITE_FORCE_PROXY_LOCKING] {
    set using_proxy $value
  }

  # Test the lock_proxy_file pragmas.
  #
  db close
  set env(SQLITE_FORCE_PROXY_LOCKING) "0"

  sqlite3 db test.db
  do_test pragma-16.1 {
    execsql {
      PRAGMA lock_proxy_file="mylittleproxy";
      select * from sqlite_master;
    }
    execsql {
      PRAGMA lock_proxy_file;
    } 
  } {mylittleproxy}

  do_test pragma-16.2 {
    sqlite3 db2 test.db
    execsql {
      PRAGMA lock_proxy_file="mylittleproxy";
    } db2
  } {}

  db2 close
  do_test pragma-16.2.1 {
    sqlite3 db2 test.db
    execsql {
      PRAGMA lock_proxy_file=":auto:";
      select * from sqlite_master;
    } db2
    execsql {
      PRAGMA lock_proxy_file;
    } db2
  } {mylittleproxy}

  db2 close
  do_test pragma-16.3 {
    sqlite3 db2 test.db
    execsql {
      PRAGMA lock_proxy_file="myotherproxy";
    } db2
    catchsql {
      select * from sqlite_master;
    } db2
  } {1 {database is locked}}

  do_test pragma-16.4 {
    db2 close
    db close
    sqlite3 db2 test.db
    execsql {
      PRAGMA lock_proxy_file="myoriginalproxy";
      PRAGMA lock_proxy_file="myotherproxy";
      PRAGMA lock_proxy_file;
    } db2
  } {myotherproxy}

  db2 close
  set env(SQLITE_FORCE_PROXY_LOCKING) "1"
  do_test pragma-16.5 {
    sqlite3 db2 test.db
    execsql {
      PRAGMA lock_proxy_file=":auto:";
      PRAGMA lock_proxy_file;
    } db2
  } {myotherproxy}
  
  do_test pragma-16.6 {
    db2 close
    sqlite3 db2 test2.db
    set lockpath [execsql {
      PRAGMA lock_proxy_file=":auto:";
      PRAGMA lock_proxy_file;
    } db2]
    string match "*test2.db:auto:" $lockpath
  } {1}
  
  set sqlite_hostid_num 2
  do_test pragma-16.7 {
    list [catch {
      sqlite3 db test2.db
      execsql { 
        PRAGMA lock_proxy_file=":auto:";
        select * from sqlite_master;
      }
    } msg] $msg
  } {1 {database is locked}}
  db close
  
  do_test pragma-16.8 {
    list [catch {
      sqlite3 db test2.db
      execsql { select * from sqlite_master } 
    } msg] $msg
  } {1 {database is locked}}

  db2 close
  do_test pragma-16.8.1 {
    execsql {
      PRAGMA lock_proxy_file="yetanotherproxy";
      PRAGMA lock_proxy_file;
    } 
  } {yetanotherproxy}
  do_test pragma-16.8.2 {
    execsql {
      create table mine(x);
    } 
  } {}

  db close
  do_test pragma-16.9 {
    sqlite3 db proxytest.db
    set lockpath2 [execsql {
      PRAGMA lock_proxy_file=":auto:";
      PRAGMA lock_proxy_file;
    } db]
    string match "*proxytest.db:auto:" $lockpath2
  } {1}

  set env(SQLITE_FORCE_PROXY_LOCKING) $using_proxy
  set sqlite_hostid_num 0
}

# Parsing of auto_vacuum settings.
#
foreach {autovac_setting val} {
  0 0
  1 1
  2 2
  3 0
  -1 0
  none 0
  NONE 0
  NoNe 0
  full 1
  FULL 1
  incremental 2
  INCREMENTAL 2
  -1234 0
  1234 0
} {
  do_test pragma-17.1.$autovac_setting {
    catch {db close}
    sqlite3 db :memory:
    execsql "
      PRAGMA auto_vacuum=$::autovac_setting;
      PRAGMA auto_vacuum;
    "
  } $val
}

# Parsing of temp_store settings.
#
foreach {temp_setting val} {
  0 0
  1 1
  2 2
  3 0
  -1 0
  file 1
  FILE 1
  fIlE 1
  memory 2
  MEMORY 2
  MeMoRy 2
} {
  do_test pragma-18.1.$temp_setting {
    catch {db close}
    sqlite3 db :memory:
    execsql "
      PRAGMA temp_store=$::temp_setting;
      PRAGMA temp_store=$::temp_setting;
      PRAGMA temp_store;
    "
  } $val
}

# The SQLITE_FCNTL_PRAGMA logic, with error handling.
#
db close
testvfs tvfs
sqlite3 db test.db -vfs tvfs
do_test pragma-19.1 {
  catchsql {PRAGMA error}
} {1 {SQL logic error}}
do_test pragma-19.2 {
  catchsql {PRAGMA error='This is the error message'}
} {1 {This is the error message}}
do_test pragma-19.3 {
  catchsql {PRAGMA error='7 This is the error message'}
} {1 {This is the error message}}
do_test pragma-19.4 {
  catchsql {PRAGMA error=7}
} {1 {out of memory}}
do_test pragma-19.5 {
  file tail [lindex [execsql {PRAGMA filename}] 0]
} {test.db}

if {$tcl_platform(platform)=="windows"} {
# Test data_store_directory pragma
#
db close
sqlite3 db test.db
file mkdir data_dir
do_test pragma-20.1 {
  catchsql {PRAGMA data_store_directory}
} {0 {}}
do_test pragma-20.2 {
  set pwd [string map {' ''} [file nativename [get_pwd]]]
  catchsql "PRAGMA data_store_directory='$pwd';"
} {0 {}}
do_test pragma-20.3 {
  catchsql {PRAGMA data_store_directory}
} [list 0 [list [file nativename [get_pwd]]]]
do_test pragma-20.4 {
  set pwd [string map {' ''} [file nativename \
    [file join [get_pwd] data_dir]]]
  catchsql "PRAGMA data_store_directory='$pwd';"
} {0 {}}
do_test pragma-20.5 {
  sqlite3 db2 test2.db
  catchsql "PRAGMA database_list;" db2
} [list 0 [list 0 main [file nativename \
    [file join [get_pwd] data_dir test2.db]]]]
catch {db2 close}
do_test pragma-20.6 {
  sqlite3 db2 [file join [get_pwd] test2.db]
  catchsql "PRAGMA database_list;" db2
} [list 0 [list 0 main [file nativename \
    [file join [get_pwd] test2.db]]]]
catch {db2 close}
do_test pragma-20.7 {
  catchsql "PRAGMA data_store_directory='';"
} {0 {}}
do_test pragma-20.8 {
  catchsql {PRAGMA data_store_directory}
} {0 {}}

forcedelete data_dir
} ;# endif windows

database_may_be_corrupt
if {![nonzero_reserved_bytes]} {

  do_test 21.1 {
    # Create a corrupt database in testerr.db. And a non-corrupt at test.db.
    #
    db close
    forcedelete test.db
    sqlite3 db test.db
    execsql { 
      PRAGMA page_size = 1024;
      PRAGMA auto_vacuum = 0;
      CREATE TABLE t1(a PRIMARY KEY, b);
      INSERT INTO t1 VALUES(1, 1);
    }
    for {set i 0} {$i < 10} {incr i} {
      execsql { INSERT INTO t1 SELECT a + (1 << $i), b + (1 << $i) FROM t1 }
    }
    db close
    forcecopy test.db testerr.db
    hexio_write testerr.db 15000 [string repeat 55 100]
  } {100}
  
  set mainerr {*** in database main ***
Multiple uses for byte 672 of page 15}
  set auxerr {*** in database aux ***
Multiple uses for byte 672 of page 15}
  
  set mainerr {/{\*\*\* in database main \*\*\*
Multiple uses for byte 672 of page 15}.*/}
  set auxerr {/{\*\*\* in database aux \*\*\*
Multiple uses for byte 672 of page 15}.*/}
  
  do_test 22.2 {
    catch { db close }
    sqlite3 db testerr.db
    execsql { PRAGMA integrity_check }
  } $mainerr
  
  do_test 22.3.1 {
    catch { db close }
    sqlite3 db test.db
    execsql { 
      ATTACH 'testerr.db' AS 'aux';
      PRAGMA integrity_check;
    }
  } $auxerr
  do_test 22.3.2 {
    execsql { PRAGMA main.integrity_check; }
  } {ok}
  do_test 22.3.3 {
    execsql { PRAGMA aux.integrity_check; }
  } $auxerr
  
  do_test 22.4.1 {
    catch { db close }
    sqlite3 db testerr.db
    execsql { 
      ATTACH 'test.db' AS 'aux';
      PRAGMA integrity_check;
    }
  } $mainerr
  do_test 22.4.2 {
    execsql { PRAGMA main.integrity_check; }
  } $mainerr
  do_test 22.4.3 {
    execsql { PRAGMA aux.integrity_check; }
  } {ok}
}
  
db close
forcedelete test.db test.db-wal test.db-journal
sqlite3 db test.db
sqlite3 db2 test.db
do_test 23.1 {
  db eval {
    CREATE TABLE t1(a INTEGER PRIMARY KEY,b,c,d);
    CREATE INDEX i1 ON t1(b,c);
    CREATE INDEX i2 ON t1(c,d);
    CREATE INDEX i2x ON t1(d COLLATE nocase, c DESC);
    CREATE INDEX i3 ON t1(d,b+c,c);
    CREATE TABLE t2(x INTEGER REFERENCES t1);
  }
  db2 eval {SELECT name FROM sqlite_master}
} {t1 i1 i2 i2x i3 t2}
do_test 23.2a {
  db eval {
    DROP INDEX i2;
    CREATE INDEX i2 ON t1(c,d,b);
  }
  capture_pragma db2 out {PRAGMA index_info(i2)}
  db2 eval {SELECT cid, name, '|' FROM out ORDER BY seqno}
} {2 c | 3 d | 1 b |}

# EVIDENCE-OF: R-56143-29319 PRAGMA schema.index_xinfo(index-name); This
# pragma returns information about every column in an index.
#
# EVIDENCE-OF: R-45970-35618 Unlike this index_info pragma, this pragma
# returns information about every column in the index, not just the key
# columns.
#
do_test 23.2b {
  capture_pragma db2 out {PRAGMA index_xinfo(i2)}
  db2 eval {SELECT cid, name, "desc", coll, "key", '|' FROM out ORDER BY seqno}
} {2 c 0 BINARY 1 | 3 d 0 BINARY 1 | 1 b 0 BINARY 1 | -1 {} 0 BINARY 0 |}

# (The first column of output from PRAGMA index_xinfo is...)
# EVIDENCE-OF: R-00197-14279 The rank of the column within the index. (0
# means left-most. Key columns come before auxiliary columns.)
#
# (The second column of output from PRAGMA index_xinfo is...)
# EVIDENCE-OF: R-06603-49335 The rank of the column within the table
# being indexed, or -1 if the index-column is the rowid of the table
# being indexed and -2 if the index is on an expression.
#
# (The third column of output from PRAGMA index_xinfo is...)
# EVIDENCE-OF: R-40641-22898 The name of the column being indexed, or
# NULL if the index-column is the rowid of the table being indexed or an
# expression.
#
# (The fourth column of output from PRAGMA index_xinfo is...)
# EVIDENCE-OF: R-11847-09179 1 if the index-column is sorted in reverse
# (DESC) order by the index and 0 otherwise.
#
# (The fifth column of output from PRAGMA index_xinfo is...)
# EVIDENCE-OF: R-15313-19540 The name for the collating sequence used to
# compare values in the index-column.
#
# (The sixth column of output from PRAGMA index_xinfo is...)
# EVIDENCE-OF: R-14310-64553 1 if the index-column is a key column and 0
# if the index-column is an auxiliary column.
#
do_test 23.2c {
  db2 eval {PRAGMA index_xinfo(i2)}
} {0 2 c 0 BINARY 1 1 3 d 0 BINARY 1 2 1 b 0 BINARY 1 3 -1 {} 0 BINARY 0}
do_test 23.2d {
  db2 eval {PRAGMA index_xinfo(i2x)}
} {0 3 d 0 nocase 1 1 2 c 1 BINARY 1 2 -1 {} 0 BINARY 0}
do_test 23.2e {
  db2 eval {PRAGMA index_xinfo(i3)}
} {0 3 d 0 BINARY 1 1 -2 {} 0 BINARY 1 2 2 c 0 BINARY 1 3 -1 {} 0 BINARY 0}

# EVIDENCE-OF: R-64103-17776 PRAGMA schema.index_list(table-name); This
# pragma returns one row for each index associated with the given table.
#
# (The first column of output from PRAGMA index_list is...)
# EVIDENCE-OF: R-02753-24748 A sequence number assigned to each index
# for internal tracking purposes.
#
# (The second column of output from PRAGMA index_list is...)
# EVIDENCE-OF: R-35496-03635 The name of the index.
#
# (The third column of output from PRAGMA index_list is...)
# EVIDENCE-OF: R-57301-64506 "1" if the index is UNIQUE and "0" if not.
#
# (The fourth column of output from PRAGMA index_list is...)
# EVIDENCE-OF: R-36609-39554 "c" if the index was created by a CREATE
# INDEX statement, "u" if the index was created by a UNIQUE constraint,
# or "pk" if the index was created by a PRIMARY KEY constraint.
#
do_test 23.3 {
  db eval {
    DROP INDEX IF EXISTS i3;
    CREATE INDEX i3 ON t1(d,b,c);
  }
  capture_pragma db2 out {PRAGMA index_list(t1)}
  db2 eval {SELECT seq, name, "unique", origin, '|' FROM out ORDER BY seq}
} {0 i3 0 c | 1 i2 0 c | 2 i2x 0 c | 3 i1 0 c |}
ifcapable altertable {
  do_test 23.4 {
    db eval {
      ALTER TABLE t1 ADD COLUMN e;
    }
    db2 eval {
      PRAGMA table_info(t1);
    }
  } {/4 e {} 0 {} 0/}
}
do_test 23.5 {
  db eval {
    DROP TABLE t2;
    CREATE TABLE t2(x, y INTEGER REFERENCES t1);
  }
  db2 eval {
    PRAGMA foreign_key_list(t2);
  }
} {0 0 t1 y {} {NO ACTION} {NO ACTION} NONE}
db2 close

ifcapable !has_codec {
  reset_db
  do_execsql_test 24.0 {
    PRAGMA page_size = 1024;
    CREATE TABLE t1(a, b, c);
    CREATE INDEX i1 ON t1(b);
    INSERT INTO t1 VALUES('a', 'b', 'c');
    PRAGMA integrity_check;
  } {ok}
  
  set r [db one {SELECT rootpage FROM sqlite_master WHERE name = 't1'}]
  db close
  hexio_write test.db [expr $r*1024 - 16] 000000000000000701040f0f1f616263
  
  sqlite3 db test.db
  do_catchsql_test 24.1 {
    SELECT * FROM t1;
  } {1 {database disk image is malformed}}
  do_catchsql_test 24.2 {
    PRAGMA integrity_check;
  } {0 {{database disk image is malformed}}}
}  
database_never_corrupt

# 2023-03-27.  Register allocation issue in integrity_check discovered
# by new assert() statements added in [6f8b97f31a4c8552].
# dbsqlfuzz dc9ab26037cf5ef797d28cd1ae0855ade584216d
# tag-20230327-1
#
reset_db
do_execsql_test 25.0 {
  CREATE TABLE t1(a INT, b AS (a*2) NOT NULL);
  CREATE TEMP TABLE t2(a PRIMARY KEY, b, c UNIQUE) WITHOUT ROWID;
  CREATE UNIQUE INDEX t2x ON t2(c,b);
  PRAGMA integrity_check;
} ok
finish_test