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+# 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: pragma2.test,v 1.4 2007/10/09 08:29:33 danielk1977 Exp $
+
+set testdir [file dirname $argv0]
+source $testdir/tester.tcl
+
+# Test organization:
+#
+# pragma2-1.*: Test freelist_count pragma on the main database.
+# pragma2-2.*: Test freelist_count pragma on an attached database.
+# pragma2-3.*: Test trying to write to the freelist_count is a no-op.
+# pragma2-4.*: Tests for PRAGMA cache_spill
+#
+
+ifcapable !pragma||!schema_pragmas {
+  finish_test
+  return
+}
+
+test_set_config_pagecache 0 0
+
+# 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]
+db eval {PRAGMA auto_vacuum=0}
+
+
+# EVIDENCE-OF: R-11211-21323 PRAGMA schema.freelist_count; Return the
+# number of unused pages in the database file.
+#
+do_test pragma2-1.1 {
+  execsql {
+    PRAGMA freelist_count;
+  }
+} {0}
+do_test pragma2-1.2 {
+  execsql {
+    CREATE TABLE abc(a, b, c);
+    PRAGMA freelist_count;
+  }
+} {0}
+do_test pragma2-1.3 {
+  execsql {
+    DROP TABLE abc;
+    PRAGMA freelist_count;
+  }
+} {1}
+do_test pragma2-1.4 {
+  execsql {
+    PRAGMA main.freelist_count;
+  }
+} {1}
+
+forcedelete test2.db
+forcedelete test2.db-journal
+
+ifcapable attach {
+  do_test pragma2-2.1 {
+    execsql {
+      ATTACH 'test2.db' AS aux;
+      PRAGMA aux.auto_vacuum=OFF;
+      PRAGMA aux.freelist_count;
+    }
+  } {0}
+  do_test pragma2-2.2 {
+    execsql {
+      CREATE TABLE aux.abc(a, b, c);
+      PRAGMA aux.freelist_count;
+    }
+  } {0}
+  do_test pragma2-2.3 {
+    set ::val [string repeat 0123456789 1000]
+    execsql {
+      INSERT INTO aux.abc VALUES(1, 2, $::val);
+      PRAGMA aux.freelist_count;
+    }
+  } {0}
+  do_test pragma2-2.4 {
+    expr {[file size test2.db] / 1024}
+  } {11}
+  do_test pragma2-2.5 {
+    execsql {
+      DELETE FROM aux.abc;
+      PRAGMA aux.freelist_count;
+    }
+  } {9}
+  
+  do_test pragma2-3.1 {
+    execsql {
+      PRAGMA aux.freelist_count;
+      PRAGMA main.freelist_count;
+      PRAGMA freelist_count;
+    }
+  } {9 1 1}
+  do_test pragma2-3.2 {
+    execsql {
+      PRAGMA freelist_count = 500;
+      PRAGMA freelist_count;
+    }
+  } {1 1}
+  do_test pragma2-3.3 {
+    execsql {
+      PRAGMA aux.freelist_count = 500;
+      PRAGMA aux.freelist_count;
+    }
+  } {9 9}
+}
+
+# Default setting of PRAGMA cache_spill is always ON
+#
+# EVIDENCE-OF: R-63549-59887 PRAGMA cache_spill; PRAGMA
+# cache_spill=boolean; PRAGMA schema.cache_spill=N;
+#
+# EVIDENCE-OF: R-23955-02765 Cache_spill is enabled by default
+#
+db close
+delete_file test.db test.db-journal
+delete_file test2.db test2.db-journal
+sqlite3 db test.db
+do_execsql_test pragma2-4.1 {
+  PRAGMA main.cache_size=2000;
+  PRAGMA temp.cache_size=2000;
+  PRAGMA cache_spill;
+  PRAGMA main.cache_spill;
+  PRAGMA temp.cache_spill;
+} {2000 2000 2000}
+do_execsql_test pragma2-4.2 {
+  PRAGMA cache_spill=OFF;
+  PRAGMA cache_spill;
+  PRAGMA main.cache_spill;
+  PRAGMA temp.cache_spill;
+} {0 0 0}
+do_execsql_test pragma2-4.3 {
+  PRAGMA page_size=1024;
+  PRAGMA cache_size=50;
+  BEGIN;
+  CREATE TABLE t1(a INTEGER PRIMARY KEY, b, c, d);
+  INSERT INTO t1 VALUES(1, randomblob(400), 1, randomblob(400));
+  INSERT INTO t1 SELECT a+1, randomblob(400), a+1, randomblob(400) FROM t1;
+  INSERT INTO t1 SELECT a+2, randomblob(400), a+2, randomblob(400) FROM t1;
+  INSERT INTO t1 SELECT a+4, randomblob(400), a+4, randomblob(400) FROM t1;
+  INSERT INTO t1 SELECT a+8, randomblob(400), a+8, randomblob(400) FROM t1;
+  INSERT INTO t1 SELECT a+16, randomblob(400), a+16, randomblob(400) FROM t1;
+  INSERT INTO t1 SELECT a+32, randomblob(400), a+32, randomblob(400) FROM t1;
+  INSERT INTO t1 SELECT a+64, randomblob(400), a+64, randomblob(400) FROM t1;
+  COMMIT;
+  ATTACH 'test2.db' AS aux1;
+  CREATE TABLE aux1.t2(a INTEGER PRIMARY KEY, b, c, d);
+  INSERT INTO t2 SELECT * FROM t1;
+  DETACH aux1;
+  PRAGMA cache_spill=ON;
+} {}
+sqlite3_release_memory
+#
+# EVIDENCE-OF: R-07634-40532 The cache_spill pragma enables or disables
+# the ability of the pager to spill dirty cache pages to the database
+# file in the middle of a transaction.
+#
+do_test pragma2-4.4 {
+  db eval {
+    BEGIN;
+    UPDATE t1 SET c=c+1;
+    PRAGMA lock_status;
+  }
+} {main exclusive temp unknown}  ;# EXCLUSIVE lock due to cache spill
+do_test pragma2-4.5.1 {
+  db eval {
+    ROLLBACK;
+    PRAGMA cache_spill=OFF;
+    PRAGMA Cache_Spill;
+    BEGIN;
+    UPDATE t1 SET c=c+1;
+    PRAGMA lock_status;
+  }
+} {0 main reserved temp unknown}   ;# No cache spill, so no exclusive lock
+
+
+# EVIDENCE-OF: R-34657-61226 The "PRAGMA cache_spill=N" form of this
+# pragma sets a minimum cache size threshold required for spilling to
+# occur.
+do_test pragma2-4.5.2 {
+  db eval {
+    ROLLBACK;
+    PRAGMA cache_spill=100000;
+    PRAGMA cache_spill;
+    BEGIN;
+    UPDATE t1 SET c=c+1;
+    PRAGMA lock_status;
+  }
+} {100000 main reserved temp unknown}   ;# Big spill threshold -> no excl lock
+ifcapable !memorymanage {
+  do_test pragma2-4.5.3 {
+    db eval {
+      ROLLBACK;
+      PRAGMA cache_spill=25;
+      PRAGMA main.cache_spill;
+      BEGIN;
+      UPDATE t1 SET c=c+1;
+      PRAGMA lock_status;
+    }
+  } {50 main exclusive temp unknown}   ;# Small cache spill -> exclusive lock
+  do_test pragma2-4.5.4 {
+    db eval {
+      ROLLBACK;
+      PRAGMA cache_spill(-25);
+      PRAGMA main.cache_spill;
+      BEGIN;
+      UPDATE t1 SET c=c+1;
+      PRAGMA lock_status;
+    }
+  } {50 main exclusive temp unknown}   ;# Small cache spill -> exclusive lock
+}
+
+
+# Verify that newly attached databases inherit the cache_spill=OFF
+# setting.
+#
+do_execsql_test pragma2-4.6 {
+  ROLLBACK;
+  PRAGMA cache_spill=OFF;
+  ATTACH 'test2.db' AS aux1;
+  PRAGMA aux1.cache_size=50;
+  BEGIN;
+  UPDATE t2 SET c=c+1;
+  PRAGMA lock_status;
+} {main unlocked temp unknown aux1 reserved}
+do_execsql_test pragma2-4.7 {
+  COMMIT;
+}
+sqlite3_release_memory
+do_execsql_test pragma2-4.8 {
+  PRAGMA cache_spill=ON; -- Applies to all databases
+  BEGIN;
+  UPDATE t2 SET c=c-1;
+  PRAGMA lock_status;
+} {main unlocked temp unknown aux1 exclusive}
+db close
+forcedelete test.db
+sqlite3 db test.db
+
+do_execsql_test pragma2-5.1 {
+  PRAGMA page_size=16384;
+  CREATE TABLE t1(x);
+  PRAGMA cache_size=2;
+  PRAGMA cache_spill=YES;
+  PRAGMA cache_spill;
+} {2}
+do_execsql_test pragma2-5.2 {
+  PRAGMA cache_spill=NO;
+  PRAGMA cache_spill;
+} {0}
+do_execsql_test pragma2-5.3 {
+  PRAGMA cache_spill(-51);
+  PRAGMA cache_spill;
+} {3}
+   
+test_restore_config_pagecache
+finish_test