1 files changed, 81 insertions, 0 deletions
diff --git a/test/mmapwarm.test b/test/mmapwarm.test
new file mode 100644
index 0000000..b077047
--- /dev/null
+++ b/test/mmapwarm.test
@@ -0,0 +1,81 @@
+# 20 September 18
+#
+# 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
+
+
+if 0 {
+  db close
+  sqlite3_shutdown
+  proc msg {args} { puts $args }
+  test_sqlite3_log msg
+  sqlite3 db test.db
+}
+
+set testprefix mmapwarm
+
+
+do_execsql_test 1.0 {
+  PRAGMA auto_vacuum = 0;
+  CREATE TABLE t1(x, y);
+  WITH s(i) AS (
+    SELECT 1 UNION ALL SELECT i+1 FROM s WHERE i<500
+  )
+  INSERT INTO t1 SELECT randomblob(400), randomblob(500) FROM s;
+  PRAGMA page_count;
+} {507}
+db close
+
+do_test 1.1 {
+  sqlite3 db test.db
+  db eval {PRAGMA mmap_size = 1000000}
+  sqlite3_mmap_warm db
+} {SQLITE_OK}
+
+do_test 1.2 {
+  db close
+  sqlite3 db test.db
+  db eval {PRAGMA mmap_size = 1000000}
+  sqlite3_mmap_warm db "main"
+} {SQLITE_OK}
+
+do_test 1.3 {
+  sqlite3 db test.db
+  sqlite3_mmap_warm db
+} {SQLITE_OK}
+
+do_test 1.4 {
+  db close
+  sqlite3 db test.db
+  sqlite3_mmap_warm db "main"
+} {SQLITE_OK}
+
+do_test 2.0 {
+  db close
+  sqlite3 db test.db
+  db eval BEGIN
+  sqlite3_mmap_warm db "main"
+} {SQLITE_MISUSE}
+
+do_faultsim_test 3 -faults oom* -prep {
+  sqlite3 db test.db
+  sqlite3_db_config_lookaside db 0 0 0
+  db eval { PRAGMA mmap_size = 1000000 }
+  db eval { SELECT * FROM sqlite_master }
+} -body {
+  sqlite3_mmap_warm db "main"
+} -test {
+  faultsim_test_result {0 SQLITE_OK} {0 SQLITE_NOMEM}
+}
+ 
+finish_test