Import SQLite 3.7.6.3.

third_party/sqlite/src/test/fallocate.test

+# 2010 July 28
+#
+# 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.
+#
+#***********************************************************************
+#
+
+set testdir [file dirname $argv0]
+source $testdir/tester.tcl
+
+file_control_chunksize_test db main [expr 1024*1024]
+
+do_test fallocate-1.1 {
+  execsql {
+    PRAGMA page_size = 1024;
+    PRAGMA auto_vacuum = 1;
+    CREATE TABLE t1(a, b);
+  }
+  file size test.db
+} [expr 1*1024*1024]
+
+do_test fallocate-1.2 {
+  execsql { INSERT INTO t1 VALUES(1, zeroblob(1024*900)) }
+  file size test.db
+} [expr 1*1024*1024]
+
+do_test fallocate-1.3 {
+  execsql { INSERT INTO t1 VALUES(2, zeroblob(1024*900)) }
+  file size test.db
+} [expr 2*1024*1024]
+
+do_test fallocate-1.4 {
+  execsql { DELETE FROM t1 WHERE a = 1 }
+  file size test.db
+} [expr 1*1024*1024]
+
+do_test fallocate-1.5 {
+  execsql { DELETE FROM t1 WHERE a = 2 }
+  file size test.db
+} [expr 1*1024*1024]
+
+do_test fallocate-1.6 {
+  execsql { PRAGMA freelist_count }
+} {0}
+
+# Start a write-transaction and read the "database file size" field from
+# the journal file. This field should be set to the number of pages in
+# the database file based on the size of the file on disk, not the actual
+# logical size of the database within the file.
+#
+# We need to check this to verify that if in the unlikely event a rollback
+# causes a database file to grow, the database grows to its previous size
+# on disk, not to the minimum size required to hold the database image.
+#
+do_test fallocate-1.7 {
+  execsql { BEGIN; INSERT INTO t1 VALUES(1, 2); }
+  if {[permutation] != "inmemory_journal"} {
+    hexio_get_int [hexio_read test.db-journal 16 4]
+  } else {
+    set {} 1024
+  }
+} {1024}
+do_test fallocate-1.8 { execsql { COMMIT } } {}
+
+
+#-------------------------------------------------------------------------
+# The following tests - fallocate-2.* - test that things work in WAL
+# mode as well.
+#
+set skipwaltests [expr {
+  [permutation]=="journaltest" || [permutation]=="inmemory_journal"
+}]
+ifcapable !wal { set skipwaltests 1 }
+
+if {!$skipwaltests} {
+  db close
+  file delete -force test.db
+  sqlite3 db test.db
+  file_control_chunksize_test db main [expr 32*1024]
+  
+  do_test fallocate-2.1 {
+    execsql {
+      PRAGMA page_size = 1024;
+      PRAGMA journal_mode = WAL;
+      CREATE TABLE t1(a, b);
+    }
+    file size test.db
+  } [expr 32*1024]
+  
+  do_test fallocate-2.2 {
+    execsql { INSERT INTO t1 VALUES(1, zeroblob(35*1024)) }
+    execsql { PRAGMA wal_checkpoint }
+    file size test.db
+  } [expr 64*1024]
+  
+  do_test fallocate-2.3 {
+    execsql { DELETE FROM t1 }
+    execsql { VACUUM }
+    file size test.db
+  } [expr 64*1024]
+  
+  do_test fallocate-2.4 {
+    execsql { PRAGMA wal_checkpoint }
+    file size test.db
+  } [expr 32*1024]
+  
+  do_test fallocate-2.5 {
+    execsql { 
+      INSERT INTO t1 VALUES(2, randomblob(35*1024));
+      PRAGMA wal_checkpoint;
+      INSERT INTO t1 VALUES(3, randomblob(128));
+      DELETE FROM t1 WHERE a = 2;
+      VACUUM;
+    }
+    file size test.db
+  } [expr 64*1024]
+  
+  do_test fallocate-2.6 {
+    sqlite3 db2 test.db
+    execsql { BEGIN ; SELECT count(a) FROM t1 } db2
+    execsql {  
+      INSERT INTO t1 VALUES(4, randomblob(128));
+      PRAGMA wal_checkpoint;
+    }
+    file size test.db
+  } [expr 64*1024]
+  
+  do_test fallocate-2.7 {
+    execsql { SELECT count(b) FROM t1 } db2
+  } {1}
+  
+  do_test fallocate-2.8 {
+    execsql { COMMIT } db2
+    execsql { PRAGMA wal_checkpoint }
+    file size test.db
+  } [expr 32*1024]
+}
+
+
+finish_test
+