From 487e15dc239ccdb3344d1c99ce120e872bab4a74 Mon Sep 17 00:00:00 2001
From: Hans-Christoph Steiner <hans@eds.org>
Date: Thu, 20 Sep 2012 18:34:38 -0400
Subject: Imported Upstream version 2.0.6

---
 test/walcrash3.test | 129 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 129 insertions(+)
 create mode 100644 test/walcrash3.test

(limited to 'test/walcrash3.test')

diff --git a/test/walcrash3.test b/test/walcrash3.test
new file mode 100644
index 0000000..c2c9a6d
--- /dev/null
+++ b/test/walcrash3.test
@@ -0,0 +1,129 @@
+# 2011 December 16
+#
+# 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 test simulates an application crash immediately following a
+# system call to truncate a file. Specifically, the system call that
+# truncates the WAL file if "PRAGMA journal_size_limit" is configured.
+#
+
+set testdir [file dirname $argv0]
+source $testdir/tester.tcl
+
+ifcapable !wal {finish_test ; return }
+set testprefix walcrash3
+
+db close
+testvfs tvfs
+tvfs filter {xTruncate xWrite}
+tvfs script tvfs_callback
+proc tvfs_callback {args} {}
+
+sqlite3 db test.db -vfs tvfs
+do_execsql_test 1.1 {
+  PRAGMA page_size = 1024;
+  PRAGMA journal_mode = WAL;
+  PRAGMA wal_autocheckpoint = 128;
+  PRAGMA journal_size_limit = 16384;
+
+  CREATE TABLE t1(a BLOB, b BLOB, UNIQUE(a, b));
+  INSERT INTO t1 VALUES(randomblob(10), randomblob(1000));
+} {wal 128 16384}
+
+proc tvfs_callback {method file arglist} {
+  if {$::state==1} {
+    foreach f [glob -nocomplain xx_test.*] { forcedelete $f }
+    foreach f [glob -nocomplain test.*]    { forcecopy $f "xx_$f" }
+    set ::state 2
+  }
+  if {$::state==0 && $method=="xTruncate" && [file tail $file]=="test.db-wal"} {
+    set ::state 1
+  }
+}
+
+for {set i 2} {$i<1000} {incr i} {
+
+  # If the WAL file is truncated within the following, within the following
+  # xWrite call the [tvfs_callback] makes a copy of the database and WAL 
+  # files set sets $::state to 2. So that the copied files are in the same
+  # state as the real database and WAL files would be if an application crash 
+  # occurred immediately following the xTruncate().
+  # 
+  set ::state 0
+  do_execsql_test 1.$i.1 {
+    INSERT INTO t1 VALUES(randomblob(10), randomblob(1000));
+  }
+
+  # If a copy was made, open it and run the integrity-check.
+  #
+  if {$::state==2} {
+    sqlite3 db2 xx_test.db
+    do_test 1.$i.2 { execsql { PRAGMA integrity_check  } db2 } "ok"
+    do_test 1.$i.3 { execsql { SELECT count(*) FROM t1 } db2 } [expr $i-1]
+    db2 close
+  }
+}
+catch { db close }
+tvfs delete
+
+#--------------------------------------------------------------------------
+#
+catch { db close }
+forcedelete test.db
+
+do_test 2.1 {
+  sqlite3 db test.db
+  execsql {
+    PRAGMA page_size = 512;
+    PRAGMA journal_mode = WAL;
+    PRAGMA wal_autocheckpoint = 128;
+    CREATE TABLE t1(a PRIMARY KEY, b);
+    INSERT INTO t1 VALUES(randomblob(25), randomblob(200));
+  }
+
+  for {set i 0} {$i < 1500} {incr i} {
+    execsql { INSERT INTO t1 VALUES(randomblob(25), randomblob(200)) }
+  }
+
+  db_save
+  db close
+} {}
+
+set nInitialErr [set_test_counter errors]
+for {set i 2} {$i<10000 && [set_test_counter errors]==$nInitialErr} {incr i} {
+
+  do_test 2.$i.1 {
+    catch { db close } 
+    db_restore
+    crashsql -delay 2 -file test.db-wal -seed $i {
+      SELECT * FROM sqlite_master;
+      PRAGMA synchronous = full;
+      PRAGMA wal_checkpoint;
+      BEGIN;
+        INSERT INTO t1 VALUES(randomblob(26), randomblob(200));
+        INSERT INTO t1 VALUES(randomblob(26), randomblob(200));
+        INSERT INTO t1 VALUES(randomblob(26), randomblob(200));
+        INSERT INTO t1 VALUES(randomblob(26), randomblob(200));
+        INSERT INTO t1 VALUES(randomblob(26), randomblob(200));
+        INSERT INTO t1 VALUES(randomblob(26), randomblob(200));
+        INSERT INTO t1 VALUES(randomblob(26), randomblob(200));
+        INSERT INTO t1 VALUES(randomblob(26), randomblob(200));
+      COMMIT;
+    }
+  } {1 {child process exited abnormally}}
+
+  do_test 2.$i.2 {
+    sqlite3 db test.db
+    execsql { PRAGMA integrity_check } 
+  } {ok}
+}
+
+finish_test
+
-- 
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