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+# 2021 June 22
+#
+# 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.
+#
+#***********************************************************************
+#
+# Tests for the sqlite3_changes() and sqlite3_total_changes() APIs.
+#
+
+set testdir [file dirname $argv0]
+source $testdir/tester.tcl
+set testprefix changes
+
+# To test that the change-counters do not suffer from 32-bit signed integer
+# rollover, add the following line to the array of test cases below. The
+# test will take will over an hour to run.
+#
+# 7 (1<<31)+10 ""
+#
+
+foreach {tn nRow wor} {
+ 1 50 ""
+ 2 50 "WITHOUT ROWID"
+
+ 3 5000 ""
+ 4 5000 "WITHOUT ROWID"
+
+ 5 50000 ""
+ 6 50000 "WITHOUT ROWID"
+} {
+ reset_db
+ set nBig [expr $nRow]
+
+ do_execsql_test 1.$tn.0 "
+ PRAGMA journal_mode = off;
+ CREATE TABLE t1(x INTEGER PRIMARY KEY) $wor;
+ " {off}
+
+ do_execsql_test 1.$tn.1 {
+ WITH s(i) AS (
+ SELECT 1 UNION ALL SELECT i+1 FROM s WHERE i < $nBig
+ )
+ INSERT INTO t1 SELECT i FROM s;
+ }
+
+ do_test 1.$tn.2 {
+ db changes
+ } [expr $nBig]
+
+ do_test 1.$tn.3 {
+ db total_changes
+ } [expr $nBig]
+
+ do_execsql_test 1.$tn.4 {
+ INSERT INTO t1 VALUES(-1)
+ }
+
+ do_test 1.$tn.5 {
+ db changes
+ } [expr 1]
+
+ do_test 1.$tn.6 {
+ db total_changes
+ } [expr {$nBig+1}]
+
+ do_execsql_test 1.$tn.7a {
+ SELECT count(*) FROM t1
+ } [expr {$nBig+1}]
+
+ do_execsql_test 1.$tn.7 {
+ DELETE FROM t1
+ }
+
+ do_test 1.$tn.8 {
+ db changes
+ } [expr {$nBig+1}]
+
+ do_test 1.$tn.9 {
+ db total_changes
+ } [expr {2*($nBig+1)}]
+}
+
+finish_test