Import SQLite 3.8.7.4.

third_party/sqlite/src/test/pragma2.test

 # 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
 }
 
 # Delete the preexisting database to avoid the special setup
 # that the "all.test" script does.
 #
 db close
-file delete test.db test.db-journal
-file delete test3.db test3.db-journal
+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}
 
 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}
 
-file delete -force test2.db
-file delete -force test2.db-journal
+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 {
@@ skipping 33 matching lines @@
     }
   } {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-51036-62828 PRAGMA cache_spill; PRAGMA
+# cache_spill=boolean;
+#
+# 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 cache_spill;
+  PRAGMA main.cache_spill;
+  PRAGMA temp.cache_spill;
+} {1 1 1}
+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 {
+  db eval {
+    COMMIT;
+    PRAGMA cache_spill=OFF;
+    BEGIN;
+    UPDATE t1 SET c=c-1;
+    PRAGMA lock_status;
+  }
+} {main reserved temp unknown}   ;# No cache spill, so no exclusive lock
+
+# Verify that newly attached databases inherit the cache_spill=OFF
+# setting.
+#
+do_execsql_test pragma2-4.6 {
+  COMMIT;
+  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}
+   
+
 finish_test