[sql] Import reference version of SQLite 3.17..

third_party/sqlite/sqlite-src-3170000/test/btree02.test

+# 2015-03-25
+#
+# 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 script is making multiple calls to saveCursorPosition()
+# and restoreCursorPosition() when cursors have eState==CURSOR_SKIPNEXT
+# 
+
+set testdir [file dirname $argv0]
+source $testdir/tester.tcl
+
+load_static_extension db eval
+do_execsql_test btree02-100 {
+  CREATE TABLE t1(a TEXT, ax INTEGER, b INT, PRIMARY KEY(a,ax)) WITHOUT ROWID;
+  WITH RECURSIVE c(i) AS (VALUES(1) UNION ALL SELECT i+1 FROM c WHERE i<10)
+    INSERT INTO t1(a,ax,b) SELECT printf('%02x',i), random(), i FROM c;
+  CREATE INDEX t1a ON t1(a);
+  CREATE TABLE t2(x,y);
+  CREATE TABLE t3(cnt);
+  WITH RECURSIVE c(i) AS (VALUES(1) UNION ALL SELECT i+1 FROM c WHERE i<4)
+    INSERT INTO t3(cnt) SELECT i FROM c;
+  SELECT count(*) FROM t1;
+} {10}
+do_test btree02-110 {
+  db eval BEGIN
+  set i 0
+  db eval {SELECT a, ax, b, cnt FROM t1 CROSS JOIN t3 WHERE b IS NOT NULL} {
+    db eval {INSERT INTO t2(x,y) VALUES($b,$cnt)}
+    # puts "a,b,cnt = ($a,$b,$cnt)"
+    incr i
+    if {$i%2==1} {
+      set bx [expr {$b+1000}]
+      # puts "INSERT ($a),$bx"
+      db eval {INSERT INTO t1(a,ax,b) VALUES(printf('(%s)',$a),random(),$bx)}
+    } else {
+      # puts "DELETE a=$a"
+      db eval {DELETE FROM t1 WHERE a=$a}
+    }
+    db eval {COMMIT; BEGIN}
+  }  
+  db one {COMMIT; SELECT count(*) FROM t1;}
+} {20}
+
+finish_test