# 2017 Jan 4
#
# 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.
#

set testdir [file dirname $argv0]
source $testdir/tester.tcl
set testprefix pragma4

proc do_pragma_ncol_test {tn sql nCol} {
  set ::stmt 0
  set ::stmt [sqlite3_prepare_v2 db $sql -1 dummy]
  uplevel [list do_test $tn { sqlite3_column_count $::stmt } $nCol]
  sqlite3_finalize $::stmt
}

# If there is no RHS argument, the following PRAGMA statements operate as
# queries, returning a single row containing a single column.
#
# Or, if there is RHS argument, they return zero rows of zero columns.
#
foreach {tn sql} {
  1 "PRAGMA application_id = 10"
  2 "PRAGMA automatic_index = 1"
  3 "PRAGMA auto_vacuum = 1"
  4 "PRAGMA cache_size = -100"
  5 "PRAGMA cache_spill = 1"
  6 "PRAGMA cell_size_check = 1"
  7 "PRAGMA checkpoint_fullfsync = 1"
  8 "PRAGMA count_changes = 1"
  9 "PRAGMA default_cache_size = 100"
 10 "PRAGMA defer_foreign_keys = 1"
 11 "PRAGMA empty_result_callbacks = 1"
 12 "PRAGMA encoding = 'utf-8'"
 13 "PRAGMA foreign_keys = 1"
 14 "PRAGMA full_column_names = 1"
 15 "PRAGMA fullfsync = 1"
 16 "PRAGMA ignore_check_constraints = 1"
 18 "PRAGMA page_size = 511"
 19 "PRAGMA page_size = 512"
 20 "PRAGMA query_only = false"
 21 "PRAGMA read_uncommitted = true"
 22 "PRAGMA recursive_triggers = false"
 23 "PRAGMA reverse_unordered_selects = false"
 24 "PRAGMA schema_version = 211"
 25 "PRAGMA short_column_names = 1"
 26 "PRAGMA synchronous = full"
 29 "PRAGMA temp_store = memory"
 30 "PRAGMA user_version = 405"
 31 "PRAGMA writable_schema = 1"
} {
  reset_db

  # Without RHS:
  do_pragma_ncol_test 1.$tn.1 [lindex [split $sql =] 0] 1

  # With RHS:
  do_pragma_ncol_test 1.$tn.2 $sql  0
}

# These pragmas should never return any values.
#
foreach {tn sql} {
  1 "PRAGMA shrink_memory"
  2 "PRAGMA shrink_memory = 10"
  3 "PRAGMA case_sensitive_like = 0"
  4 "PRAGMA case_sensitive_like = 1"
  5 "PRAGMA case_sensitive_like"
} {

  do_pragma_ncol_test 1.$tn.1 $sql 0
}

# EXPLAIN on a PRAGMA integrity_check.
# Verify that that P4_INTARRAY argument to OP_IntegrityCk is rendered
# correctly.
#
catch {db close}
forcedelete test.db
sqlite3 db test.db
do_test pragma4-2.100 {
  db eval {
    PRAGMA page_size=512;
    CREATE TABLE t1(x);
    WITH RECURSIVE c(x) AS (VALUES(1) UNION ALL SELECT x+1 FROM c WHERE x<10000)
    INSERT INTO t1(x) SELECT zeroblob(300) FROM c;
    CREATE TABLE t2(y);
    DROP TABLE t1;
  }
  string map {\[ x \] x \173 {} \175 {}} \
    [db eval {EXPLAIN PRAGMA integrity_check}]
} {/ IntegrityCk 1 2 8 x[0-9]+,1x /}


#--------------------------------------------------------------------------
#
reset_db
forcedelete test.db2
do_execsql_test 4.1.1 {
  CREATE TABLE t1(a, b, c);
  ATTACH 'test.db2' AS aux;
  CREATE TABLE aux.t2(d, e, f);
}
do_execsql_test 4.1.2 { PRAGMA table_info = t1 } {
  0 a {} 0 {} 0 1 b {} 0 {} 0 2 c {} 0 {} 0
}
do_execsql_test 4.1.3 { PRAGMA table_info = t2 } {
  0 d {} 0 {} 0 1 e {} 0 {} 0 2 f {} 0 {} 0
}
do_test 4.1.4 { 
  sqlite3 db3 test.db
  sqlite3 db2 test.db2
  execsql { DROP TABLE t1 } db3
  execsql { DROP TABLE t2 } db2
} {}  
if {[permutation]=="prepare"} {
  do_catchsql_test 4.1.5a { 
    PRAGMA table_info(t1) 
  } {1 {database schema has changed}}
}
do_execsql_test 4.1.5 { 
  PRAGMA table_info(t1) 
}
do_execsql_test 4.1.6 { PRAGMA table_info(t2) }

db2 close
db3 close
reset_db
forcedelete test.db2
do_execsql_test 4.2.1 {
  CREATE TABLE t1(a, b, c);
  ATTACH 'test.db2' AS aux;
  CREATE TABLE aux.t2(d, e, f);
}
ifcapable vtab {
  do_execsql_test 4.2.2 { SELECT * FROM pragma_table_info('t1') } {
    0 a {} 0 {} 0 1 b {} 0 {} 0 2 c {} 0 {} 0
  }
  do_execsql_test 4.2.3 { SELECT * FROM pragma_table_info('t2') } {
    0 d {} 0 {} 0 1 e {} 0 {} 0 2 f {} 0 {} 0
  }
}
do_test 4.2.4 { 
  sqlite3 db3 test.db
  sqlite3 db2 test.db2
  execsql { DROP TABLE t1 } db3
  execsql { DROP TABLE t2 } db2
} {}
ifcapable vtab {
  do_execsql_test 4.2.5 { SELECT * FROM pragma_table_info('t1') } 
  do_execsql_test 4.2.6 { SELECT * FROM pragma_table_info('t2') } 
}

db2 close
db3 close
reset_db
forcedelete test.db2
do_execsql_test 4.3.1 {
  CREATE TABLE t1(a, b, c);
  CREATE INDEX i1 ON t1(b);
  ATTACH 'test.db2' AS aux;
  CREATE TABLE aux.t2(d, e, f);
  CREATE INDEX aux.i2 ON t2(e);
}
ifcapable vtab {
  do_execsql_test 4.3.2 { SELECT * FROM pragma_index_info('i1') } {0 1 b}
  do_execsql_test 4.3.3 { SELECT * FROM pragma_index_info('i2') } {0 1 e}
}
do_test 4.3.4 { 
  sqlite3 db3 test.db
  sqlite3 db2 test.db2
  execsql { DROP INDEX i1 } db3
  execsql { DROP INDEX i2 } db2
} {}
if {[permutation]=="prepare"} { catchsql { SELECT * FROM sqlite_master } }
ifcapable vtab {
  do_execsql_test 4.3.5 { SELECT * FROM pragma_index_info('i1') } 
  do_execsql_test 4.3.6 { SELECT * FROM pragma_index_info('i2') } 
}

execsql {SELECT * FROM main.sqlite_master, aux.sqlite_master}
do_execsql_test 4.4.0 {
  CREATE INDEX main.i1 ON t1(b, c);
  CREATE INDEX aux.i2 ON t2(e, f);
}
ifcapable vtab {
  do_execsql_test 4.4.1 { SELECT * FROM pragma_index_list('t1') } {0 i1 0 c 0}
  do_execsql_test 4.4.2 { SELECT * FROM pragma_index_list('t2') } {0 i2 0 c 0}
}
do_test 4.4.3 { 
  execsql { DROP INDEX i1 } db3
  execsql { DROP INDEX i2 } db2
} {}
if {[permutation]=="prepare"} { 
  catchsql { SELECT * FROM sqlite_master, aux.sqlite_master }
}
ifcapable vtab {
  do_execsql_test 4.4.5 { SELECT * FROM pragma_index_list('t1') } {}
  do_execsql_test 4.4.6 { SELECT * FROM pragma_index_list('t2') } {}
}
execsql {SELECT * FROM main.sqlite_master, aux.sqlite_master}

do_execsql_test 4.5.0 {
  CREATE UNIQUE INDEX main.i1 ON t1(a);
  CREATE UNIQUE INDEX aux.i2 ON t2(d);
  CREATE TABLE main.c1 (a, b, c REFERENCES t1(a));
  CREATE TABLE aux.c2 (d, e, r REFERENCES t2(d));
}
ifcapable vtab {
  do_execsql_test 4.5.1 { SELECT * FROM pragma_foreign_key_list('c1') } {
    0 0 t1 c a {NO ACTION} {NO ACTION} NONE
  }
  do_execsql_test 4.5.2 { SELECT * FROM pragma_foreign_key_list('c2') } {
    0 0 t2 r d {NO ACTION} {NO ACTION} NONE
  }
}
do_test 4.5.3 { 
  execsql { DROP TABLE c1 } db3
  execsql { DROP TABLE c2 } db2
} {}
if {[permutation]=="prepare"} { 
  catchsql { SELECT * FROM sqlite_master, aux.sqlite_master }
}
ifcapable vtab {
  do_execsql_test 4.5.4 { SELECT * FROM pragma_foreign_key_list('c1') }
  do_execsql_test 4.5.5 { SELECT * FROM pragma_foreign_key_list('c2') } 
}
execsql {SELECT * FROM main.sqlite_master, aux.sqlite_master}

do_execsql_test 4.6.0 {
  CREATE TABLE main.c1 (a, b, c REFERENCES t1(a));
  CREATE TABLE aux.c2 (d, e, r REFERENCES t2(d));
  INSERT INTO main.c1 VALUES(1, 2, 3);
  INSERT INTO aux.c2 VALUES(4, 5, 6);
}
do_execsql_test 4.6.1 { pragma foreign_key_check('c1') } {
  c1 1 t1 0
}
do_execsql_test 4.6.2 { pragma foreign_key_check('c2') } {
  c2 1 t2 0
}
do_test 4.6.3 { 
  execsql { DROP TABLE c2 } db2
} {}
do_execsql_test 4.6.4 { pragma foreign_key_check('c1') } {c1 1 t1 0}
do_catchsql_test 4.6.5 { 
  pragma foreign_key_check('c2') 
} {1 {no such table: c2}}

do_execsql_test 5.0 {
  CREATE TABLE t4(a DEFAULT 'abc' /* comment */, b DEFAULT -1 -- comment
     , c DEFAULT +4.0 /* another comment */
  );
  PRAGMA table_info = t4;
} {
  0 a {} 0 'abc' 0 1 b {} 0 -1 0 2 c {} 0 +4.0 0
}

# 2024-03-24 https://sqlite.org/forum/forumpost/85b6a8b6705fb77a
#
catch {db2 close}
catch {db3 close}
ifcapable vtab {
  reset_db
  do_execsql_test 6.0 {
    DROP TABLE IF EXISTS t1;
    DROP TABLE IF EXISTS t2;
    CREATE TABLE t1(a INT PRIMARY KEY, b INT);
    CREATE TABLE t2(c INT PRIMARY KEY, d INT REFERENCES t1);
    SELECT t.name, f."table", f."from", i.name, i.pk
      FROM pragma_table_list() AS t
           JOIN pragma_foreign_key_list(t.name, t.schema) AS f
           JOIN pragma_table_info(f."table", t.schema) AS i
     WHERE i.pk;
  } {t2 t1 d a 1}
}

finish_test