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third_party/sqlite/src/test/crash2.test

Index: third_party/sqlite/src/test/crash2.test
diff --git a/third_party/sqlite/src/test/crash2.test b/third_party/sqlite/src/test/crash2.test
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+# 2001 September 15
+#
+# 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 the ability of the database to
+# uses its rollback journal to recover intact (no database corruption)
+# from a power failure during the middle of a COMMIT. Even more
+# specifically, the tests in this file verify this functionality
+# for storage mediums with various sector sizes.
+#
+# $Id: crash2.test,v 1.6 2008/08/25 07:12:29 danielk1977 Exp $
+
+set testdir [file dirname $argv0]
+source $testdir/tester.tcl
+
+ifcapable !crashtest {
+  finish_test
+  return
+}
+
+db close
+
+# This test is designed to check that the crash-test infrastructure
+# can create files that do not consist of an integer number of
+# simulated disk blocks (i.e. 3KB file using 2KB disk blocks).
+#
+do_test crash2-1.1 {
+  crashsql -delay 500 -file test.db -blocksize 2048 {
+    PRAGMA auto_vacuum=OFF;
+    PRAGMA page_size=1024;
+    BEGIN;
+    CREATE TABLE abc AS SELECT 1 AS a, 2 AS b, 3 AS c;
+    CREATE TABLE def AS SELECT 1 AS d, 2 AS e, 3 AS f;
+    COMMIT;
+  }
+  file size test.db
+} {3072}
+
+for {set ii 0} {$ii < 5} {incr ii} {
+
+  # Simple test using the database created above: Create a new
+  # table so that page 1 and page 4 are modified. Using a
+  # block-size of 2048 and page-size of 1024, this means
+  # pages 2 and 3 must also be saved in the journal to avoid
+  # risking corruption.
+  #
+  # The loop is so that this test can be run with a couple
+  # of different seeds for the random number generator.
+  #
+  do_test crash2-1.2.$ii {
+    crashsql -file test.db -blocksize 2048 [subst {
+      [string repeat {SELECT random();} $ii]
+      CREATE TABLE hij(h, i, j);
+    }]
+    sqlite3 db test.db
+    db eval {PRAGMA integrity_check}
+  } {ok}
+}
+
+proc signature {} {
+  return [db eval {SELECT count(*), md5sum(a), md5sum(b), md5sum(c) FROM abc}]
+}
+
+# Test case for crashing during journal sync with simulated
+# sector-size values from 1024 to 8192.
+#
+do_test crash2-2.0 {
+  execsql BEGIN
+  for {set n 0} {$n < 1000} {incr n} {
+    execsql "INSERT INTO abc VALUES($n, [expr 2*$n], [expr 3*$n])"
+  }
+  execsql {
+    INSERT INTO abc SELECT * FROM abc;
+    INSERT INTO abc SELECT * FROM abc;
+    INSERT INTO abc SELECT * FROM abc;
+    INSERT INTO abc SELECT * FROM abc;
+    INSERT INTO abc SELECT * FROM abc;
+  }
+  execsql COMMIT
+  expr ([file size test.db] / 1024) > 450
+} {1}
+for {set i 1} {$i < 30} {incr i} {
+  set sig [signature]
+  set sector [expr 1024 * 1<<($i%4)]
+  db close
+  do_test crash2-2.$i.1 {
+     crashsql -blocksize $sector -delay [expr $i%5 + 1] -file test.db-journal "
+       PRAGMA temp_store = memory;
+       BEGIN;
+       SELECT random() FROM abc LIMIT $i;
+       INSERT INTO abc SELECT randstr(10,10), 0, 0 FROM abc WHERE random()%2==0;
+       DELETE FROM abc WHERE random()%2!=0;
+       COMMIT;
+     "
+  } {1 {child process exited abnormally}}
+  do_test crash2-2.$i.2 {
+    sqlite3 db test.db
+    signature
+  } $sig
+} 
+
+
+# Test case for crashing during database sync with simulated
+# sector-size values from 1024 to 8192.
+#
+for {set i 1} {$i < 10} {incr i} {
+  set sig [signature]
+  set sector [expr 1024 * 1<<($i%4)]
+  db close
+  do_test crash2-3.$i.1 {
+     crashsql -blocksize $sector -file test.db "
+       BEGIN;
+       SELECT random() FROM abc LIMIT $i;
+       INSERT INTO abc SELECT randstr(10,10), 0, 0 FROM abc WHERE random()%2==0;
+       DELETE FROM abc WHERE random()%2!=0;
+       COMMIT;
+     "
+  } {1 {child process exited abnormally}}
+  do_test crash2-3.$i.2 {
+    sqlite3 db test.db
+    signature
+  } $sig
+} 
+
+finish_test