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+# 2016-08-19
+#
+# 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 a test for VACUUM on attached databases.
+#
+
+set testdir [file dirname $argv0]
+source $testdir/tester.tcl
+set testprefix vacuum5
+
+# If the VACUUM statement is disabled in the current build, skip all
+# the tests in this file.
+#
+ifcapable !vacuum {
+  finish_test
+  return
+}
+
+forcedelete test2.db test3.db
+do_execsql_test vacuum5-1.1 {
+  PRAGMA auto_vacuum = 0;
+  CREATE TABLE main.t1(a,b);
+  WITH RECURSIVE c(x) AS (VALUES(1) UNION ALL SELECT x+1 FROM c WHERE x<1000)
+    INSERT INTO t1(a,b) SELECT x, randomblob(1000) FROM c;
+  CREATE TEMP TABLE ttemp(x,y);
+  INSERT INTO ttemp SELECT * FROM t1;
+  ATTACH 'test2.db' AS x2;
+  ATTACH 'test3.db' AS x3;
+  CREATE TABLE x2.t2(c,d);
+  INSERT INTO t2 SELECT * FROM t1;
+  CREATE TABLE x3.t3(e,f);
+  INSERT INTO t3 SELECT * FROM t1;
+  DELETE FROM t1 WHERE (rowid%3)!=0;
+  DELETE FROM t2 WHERE (rowid%4)!=0;
+  DELETE FROM t3 WHERE (rowid%5)!=0;
+  PRAGMA main.integrity_check;
+  PRAGMA x2.integrity_check;
+  PRAGMA x3.integrity_check;
+} {ok ok ok}
+set size1 [file size test.db]
+set size2 [file size test2.db]
+set size3 [file size test3.db]
+
+do_execsql_test vacuum5-1.2.1 {
+  VACUUM main;
+} {}
+do_test vacuum5-1.2.2 {
+  expr {[file size test.db]<$size1}
+} {1}
+do_test vacuum5-1.2.3 {
+  file size test2.db
+} $size2
+do_test vacuum5-1.2.4 {
+  file size test3.db
+} $size3
+set size1 [file size test.db]
+do_execsql_test vacuum-1.2.5 {
+  DELETE FROM t1;
+  PRAGMA main.integrity_check;
+} {ok}
+
+do_execsql_test vacuum5-1.3.1 {
+  VACUUM x2;
+} {}
+do_test vacuum5-1.3.2 {
+  file size test.db
+} $size1
+do_test vacuum5-1.3.3 {
+  expr {[file size test2.db]<$size2}
+} 1
+do_test vacuum5-1.3.4 {
+  file size test3.db
+} $size3
+set size2 [file size test2.db]
+do_execsql_test vacuum-1.3.5 {
+  DELETE FROM t2;
+  PRAGMA x2.integrity_check;
+} {ok}
+
+do_execsql_test vacuum5-1.4.1 {
+  VACUUM x3;
+} {}
+do_test vacuum5-1.3.2 {
+  file size test.db
+} $size1
+do_test vacuum5-1.3.3 {
+  file size test2.db
+} $size2
+do_test vacuum5-1.3.4 {
+  expr {[file size test3.db]<$size3}
+} 1
+
+# VACUUM is a no-op on the TEMP table
+#
+set sizeTemp [db one {PRAGMA temp.page_count}]
+do_execsql_test vacuum5-1.4.1 {
+  VACUUM temp;
+} {}
+do_execsql_test vacuum5-1.4.2 {
+  PRAGMA temp.page_count;
+} $sizeTemp
+
+do_catchsql_test vacuum5-2.0 {
+  VACUUM olaf;
+} {1 {unknown database olaf}}
+
+#-------------------------------------------------------------------------
+# Test that a temp file is opened as part of VACUUM.
+#
+if {$::TEMP_STORE<3 && [permutation]!="inmemory_journal"} {
+  db close
+  testvfs tvfs 
+  tvfs filter xOpen
+  tvfs script open_cb
+  forcedelete test.db
+
+  set ::openfiles [list]
+  proc open_cb {method args} {
+    lappend ::openfiles [file tail [lindex $args 0]]
+  }
+  sqlite3 db test.db -vfs tvfs
+
+  do_execsql_test 3.0 {
+    PRAGMA temp_store = file;
+    PRAGMA page_size = 1024;
+    PRAGMA cache_size = 50;
+    CREATE TABLE t1(i INTEGER PRIMARY KEY, j UNIQUE);
+    WITH s(i) AS (
+      VALUES(1) UNION ALL SELECT i+1 FROM s WHERE i<1000
+    )
+    INSERT INTO t1 SELECT NULL, randomblob(100) FROM s;
+  }
+
+  do_execsql_test 3.1 { VACUUM }
+
+  db close
+  tvfs delete
+  if {[atomic_batch_write test.db]==0} {
+    do_test 3.2 {
+      lrange $::openfiles 0 4
+    } {test.db test.db-journal test.db-journal {} test.db-journal}
+  }
+} 
+
+
+
+finish_test