Get `gn gen` to succeed on Windows

third_party/sqlite/src/test/incrvacuum_ioerr.test

+# 2001 October 12
+#
+# 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.  The
+# focus of this file is testing for correct handling of I/O errors
+# such as writes failing because the disk is full.
+# 
+# The tests in this file use special facilities that are only
+# available in the SQLite test fixture.
+#
+# $Id: incrvacuum_ioerr.test,v 1.6 2008/07/12 14:52:20 drh Exp $
+
+set testdir [file dirname $argv0]
+source $testdir/tester.tcl
+
+# If this build of the library does not support auto-vacuum, omit this
+# whole file.
+ifcapable {!autovacuum} {
+  finish_test
+  return
+}
+
+do_ioerr_test incrvacuum-ioerr-1 -cksum 1 -sqlprep {
+  PRAGMA auto_vacuum = 'incremental';
+  CREATE TABLE abc(a);
+  INSERT INTO abc VALUES(randstr(1500,1500));
+} -sqlbody {
+  BEGIN;
+  CREATE TABLE abc2(a);
+  DELETE FROM abc;
+  PRAGMA incremental_vacuum;
+  COMMIT;
+} 
+
+# do_ioerr_test incrvacuum-ioerr-3 -start 1 -cksum 1 -tclprep {
+#   db eval {
+#     PRAGMA auto_vacuum = 'full';
+#     PRAGMA cache_size = 10;
+#     BEGIN;
+#     CREATE TABLE abc(a, UNIQUE(a));
+#   }
+#   for {set ii 0} {$ii < 25} {incr ii} {
+#     db eval {INSERT INTO abc VALUES(randstr(1500,1500))}
+#   }
+#   db eval COMMIT
+# } -sqlbody {
+#   BEGIN;
+#   DELETE FROM abc WHERE (oid%3)==0;
+#   INSERT INTO abc SELECT a || '1234567890' FROM abc WHERE oid%2;
+#   CREATE INDEX abc_i ON abc(a);
+#   DELETE FROM abc WHERE (oid%2)==0;
+#   DROP INDEX abc_i;
+#   COMMIT;
+# }
+
+do_ioerr_test incrvacuum-ioerr-2 -start 1 -cksum 1 -tclprep {
+  db eval {
+    PRAGMA auto_vacuum = 'full';
+    PRAGMA cache_size = 10;
+    BEGIN;
+    CREATE TABLE abc(a, UNIQUE(a));
+  }
+  for {set ii 0} {$ii < 25} {incr ii} {
+    db eval {INSERT INTO abc VALUES(randstr(1500,1500))}
+  }
+  db eval COMMIT
+} -sqlbody {
+  BEGIN;
+  PRAGMA incremental_vacuum;
+  DELETE FROM abc WHERE (oid%3)==0;
+  PRAGMA incremental_vacuum;
+  INSERT INTO abc SELECT a || '1234567890' FROM abc WHERE oid%2;
+  PRAGMA incremental_vacuum;
+  CREATE INDEX abc_i ON abc(a);
+  DELETE FROM abc WHERE (oid%2)==0;
+  PRAGMA incremental_vacuum;
+  DROP INDEX abc_i;
+  PRAGMA incremental_vacuum;
+  COMMIT;
+}
+
+do_ioerr_test incrvacuum-ioerr-3 -start 1 -cksum 1 -tclprep {
+  db eval {
+    PRAGMA auto_vacuum = 'incremental';
+    BEGIN;
+    CREATE TABLE a(i integer, b blob);
+    INSERT INTO a VALUES(1, randstr(1500,1500));
+    INSERT INTO a VALUES(2, randstr(1500,1500));
+  }
+  db eval COMMIT
+  db eval {DELETE FROM a WHERE oid}
+} -sqlbody {
+  PRAGMA incremental_vacuum(5);
+} -cleanup {
+  sqlite3 db test.db
+  integrity_check incrvacuum-ioerr-2.$n.integritycheck
+  db close
+}
+
+
+ifcapable shared_cache {
+
+  catch { db close }
+  file delete -force test.db
+  set ::enable_shared_cache [sqlite3_enable_shared_cache 1]
+  
+  # Create two connections to a single shared-cache:
+  #
+  sqlite3 db1 test.db
+  sqlite3 db2 test.db
+  
+  # Create a database with around 20 free pages.
+  #
+  do_test incrvacuum-ioerr-4.0 {
+    execsql {
+      PRAGMA page_size = 1024;
+      PRAGMA locking_mode = exclusive;
+      PRAGMA auto_vacuum = 'incremental';
+      BEGIN;
+      CREATE TABLE a(i integer, b blob);
+    } db1
+    for {set ii 0} {$ii < 20} {incr ii} {
+      execsql { INSERT INTO a VALUES($ii, randstr(800,1500)); } db1
+    }
+    execsql COMMIT db1
+    execsql {DELETE FROM a WHERE oid} db1
+  } {}
+  
+  set ::rc 1
+  for {set iTest 1} {$::rc && $iTest<2000} {incr iTest} {
+  
+    # Figure out how big the database is and how many free pages it
+    # has before running incremental-vacuum.
+    #
+    set nPage [expr {[file size test.db]/1024}]
+    set nFree [execsql {pragma freelist_count} db1]
+  
+    # Now run incremental-vacuum to vacuum 5 pages from the db file.
+    # The iTest'th I/O call is set to fail.
+    #
+    set ::sqlite_io_error_pending $iTest
+    set ::sqlite_io_error_persist 1
+    do_test incrvacuum-ioerr-4.$iTest.1 {
+      set ::rc [catch {execsql {pragma incremental_vacuum(5)} db1} msg]
+      expr {$::rc==0 || $msg eq "disk I/O error"}
+    } {1}
+  
+    set ::sqlite_io_error_pending 0
+    set ::sqlite_io_error_persist 0
+    set ::sqlite_io_error_hit 0
+    set ::sqlite_io_error_hardhit 0
+  
+    set nFree2 [execsql {pragma freelist_count} db1]
+    set nPage2 [expr {[file size test.db]/1024}]
+  
+    do_test incrvacuum-ioerr-4.$iTest.2 {
+      set shrink [expr {$nPage-$nPage2}]
+      expr {$shrink==0 || $shrink==5}
+    } {1}
+  
+    do_test incrvacuum-ioerr-4.$iTest.3 {
+      expr {$nPage - $nPage2}
+    } [expr {$nFree - $nFree2}]
+  }
+  
+  # Close the two database connections and restore the default
+  # shared-cache mode setting.
+  #
+  db1 close
+  db2 close
+  sqlite3_enable_shared_cache $::enable_shared_cache
+}
+
+finish_test