[sql] Import SQLite 3.17.0.

third_party/sqlite/src/test/snapshot_fault.test

 # 2015 December 10
 #
 # 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.
 #
 #***********************************************************************
@@ skipping 128 matching lines @@
     INSERT INTO t1 VALUES(4, randomblob(500), randomblob(500));
     INSERT INTO t1 VALUES(5, randomblob(500), randomblob(500));
     INSERT INTO t1 VALUES(6, randomblob(500), randomblob(500));
     BEGIN;
   }
 } -body {
   if { [catch { sqlite3_snapshot_open db main $::snapshot } msg] } {
     error $msg
   }
 } -test {
-  faultsim_test_result {0 {}} {1 SQLITE_IOERR} \
+  faultsim_test_result {0 {}} {1 SQLITE_IOERR} {1 SQLITE_NOMEM} \
                               {1 SQLITE_IOERR_NOMEM} {1 SQLITE_IOERR_READ}
   if {$testrc==0} {
     set res [db eval { 
       SELECT a FROM t1;
       PRAGMA integrity_check;
     }]
     if {$res != "1 2 3 ok"} { error "res is $res" }
   }
 
   sqlite3_snapshot_free $::snapshot
 }
 
+#-------------------------------------------------------------------------
+# Test the handling of faults that occur within sqlite3_snapshot_recover().
+#
+reset_db
+do_execsql_test 4.0 {
+  PRAGMA journal_mode = wal;
+  CREATE TABLE t1(zzz);
+  INSERT INTO t1 VALUES('abc');
+  INSERT INTO t1 VALUES('def');
+} {wal}
+faultsim_save_and_close
+
+do_test 4.0.1 {
+  faultsim_restore_and_reopen
+  db eval { SELECT * FROM sqlite_master } 
+  sqlite3_snapshot_recover db main
+} {}
+db close
+
+do_faultsim_test 4.0 -faults oom* -prep {
+  faultsim_restore_and_reopen
+  db eval { SELECT * FROM sqlite_master } 
+} -body {
+  sqlite3_snapshot_recover db main
+} -test {
+  faultsim_test_result {0 {}} {1 SQLITE_NOMEM} {1 SQLITE_IOERR_NOMEM}
+}
+
+# The following test cases contrive to call sqlite3_snapshot_recover()
+# before all pages of the *-shm file have been mapped. This tests an
+# extra branch of error handling logic in snapshot_recover().
+#
+reset_db
+do_execsql_test 4.1.0 {
+  PRAGMA page_size = 512;
+  PRAGMA journal_mode = wal;
+  PRAGMA wal_autocheckpoint = 0;
+  CREATE TABLE t1(zzz);
+  INSERT INTO t1 VALUES(randomblob( 500 * 9500 ));
+  PRAGMA user_version = 211;
+} {wal 0}
+
+do_test 4.1.1 {
+  list [file size test.db-shm] [file size test.db]
+} {98304 512}
+
+faultsim_save_and_close
+do_faultsim_test 4.1 -faults shm* -prep {
+  catch { db2 close } 
+  catch { db close } 
+  faultsim_restore_and_reopen
+  sqlite3 db2 test.db
+  db2 eval { SELECT * FROM sqlite_master } 
+  db eval BEGIN
+  sqlite3_snapshot_get_blob db main
+  db eval COMMIT
+} -body {
+  sqlite3_snapshot_recover db main
+} -test {
+  faultsim_test_result {0 {}} {1 SQLITE_IOERR}
+}
+
 
 
 finish_test