[sql] Import reference version of SQLite 3.17..

third_party/sqlite/sqlite-src-3170000/test/mmap3.test

+# 2013-05-23
+#
+# 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
+ifcapable !mmap||!vtab {
+  finish_test
+  return
+}
+source $testdir/lock_common.tcl
+set testprefix mmap3
+
+# A codec shuts down memory-mapped I/O
+if {[nonzero_reserved_bytes]} {finish_test; return;}
+
+do_test mmap3-1.0 {
+  load_static_extension db wholenumber
+  db eval {
+    PRAGMA mmap_size=100000;
+    CREATE TABLE t1(x, y);
+    CREATE VIRTUAL TABLE nums USING wholenumber;
+    INSERT INTO t1 SELECT value, randomblob(value) FROM nums
+                    WHERE value BETWEEN 1 and 1000;
+    SELECT sum(x), sum(length(y)) from t1;
+    PRAGMA mmap_size;
+  }
+} {100000 500500 500500 100000}
+do_test mmap3-1.2 {
+  db eval {
+    PRAGMA mmap_size=50000;
+    CREATE TABLE t2(a,b);
+    SELECT name FROM sqlite_master WHERE type='table' ORDER BY 1;
+    PRAGMA quick_check;
+    PRAGMA mmap_size;
+  }
+} {50000 nums t1 t2 ok 50000}
+do_test mmap3-1.3 {
+  db eval {
+    PRAGMA mmap_size=250000;
+    DROP TABLE t2;
+    SELECT name FROM sqlite_master WHERE type='table' ORDER BY 1;
+    PRAGMA quick_check;
+    PRAGMA mmap_size;
+  }
+} {250000 nums t1 ok 250000}
+do_test mmap3-1.4 {
+  db eval {SELECT x FROM t1 WHERE +x BETWEEN 10 AND 15} {
+    db eval {PRAGMA mmap_size=150000}
+  }
+  db eval {
+    PRAGMA quick_check;
+    PRAGMA mmap_size;
+  }
+} {ok 250000}
+do_test mmap3-1.5 {
+  db eval {SELECT x FROM t1 WHERE +x BETWEEN 10 AND 15} {
+    db eval {PRAGMA mmap_size=0}
+  }
+  db eval {
+    PRAGMA quick_check;
+    PRAGMA mmap_size;
+  }
+} {ok 250000}
+do_test mmap3-1.6 {
+  db eval {SELECT x FROM t1 WHERE +x BETWEEN 10 AND 15} {
+    set x [db one {PRAGMA mmap_size}]
+  }
+  set x [concat $x [db eval {
+    PRAGMA quick_check;
+    PRAGMA mmap_size;
+  }]]
+} {250000 ok 250000}
+do_test mmap3-1.7 {
+  db eval {
+    PRAGMA mmap_size(0);
+    CREATE TABLE t3(a,b,c);
+    SELECT name FROM sqlite_master WHERE type='table' ORDER BY 1;
+    PRAGMA quick_check;
+    PRAGMA mmap_size;
+  }
+} {0 nums t1 t3 ok 0}
+do_test mmap3-1.8 {
+  db eval {SELECT x FROM t1 WHERE +x BETWEEN 10 AND 15} {
+    db eval {PRAGMA mmap_size=75000}
+  }
+  db eval {
+    PRAGMA quick_check;
+    PRAGMA mmap_size;
+  }
+} {ok 75000}
+
+finish_test