1 files changed, 88 insertions, 0 deletions
diff --git a/test/changes.test b/test/changes.test
new file mode 100644
index 0000000..b3a2ae1
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+++ b/test/changes.test
@@ -0,0 +1,88 @@
+# 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