1 files changed, 131 insertions, 0 deletions
diff --git a/ext/session/sessionsize.test b/ext/session/sessionsize.test
new file mode 100644
index 0000000..04d0551
--- /dev/null
+++ b/ext/session/sessionsize.test
@@ -0,0 +1,131 @@
+# 2021 April 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.
+#
+#***********************************************************************
+# This file implements regression tests for SQLite library.
+#
+
+if {![info exists testdir]} {
+  set testdir [file join [file dirname [info script]] .. .. test]
+} 
+source [file join [file dirname [info script]] session_common.tcl]
+source $testdir/tester.tcl
+ifcapable !session {finish_test; return}
+
+set testprefix sessionsize
+
+proc do_changeset_size_test {tn sql} {
+  sqlite3session S db main
+  S attach *
+  db eval $sql
+
+  set sz [S changeset_size]
+  set C [S changeset]
+  set szC [string length $C]
+  S delete
+
+  do_test $tn "expr $sz" $szC
+}
+
+do_execsql_test 1.0 {
+  CREATE TABLE t1(a INTEGER PRIMARY KEY, b, c);
+  INSERT INTO t1 VALUES(1, 'abc', 'def');
+  INSERT INTO t1 VALUES(2, 'ghi', 'jkl');
+}
+
+do_changeset_size_test 1.1 {
+  INSERT INTO t1 VALUES(3, 'hello', 'world');
+}
+
+do_changeset_size_test 1.2 {
+  DELETE FROM t1 WHERE a=2;
+}
+
+do_changeset_size_test 1.3 {
+  DELETE FROM t1 WHERE a=3;
+  INSERT INTO t1 VALUES(3, 1, 2);
+}
+
+do_changeset_size_test 1.4 {
+  UPDATE t1 SET c='hello world' WHERE a=3;
+}
+
+#-------------------------------------------------------------------------
+
+do_execsql_test 2.0 {
+  CREATE TABlE t2(a, b, c, d, PRIMARY KEY(a, b)) WITHOUT ROWID;
+  CREATE TABlE t3(a, b, c, d PRIMARY KEY);
+}
+
+do_changeset_size_test 2.1 {
+  WITH s(i) AS (
+    SELECT 1 UNION ALL SELECT i+1 FROM s WHERE i<50
+  )
+  INSERT INTO t2 SELECT i, i+1, i+2, i+3 FROM s;
+
+  UPDATE t2 SET c=randomblob(a) WHERE a>10
+}
+
+do_changeset_size_test 2.2 {
+  DELETE FROM t2 WHERE a=1;
+  INSERT INTO t2 VALUES(1, 4, 3, 4);
+}
+
+do_changeset_size_test 2.2 {
+  UPDATE t2 SET b=4 WHERE a=2
+}
+
+do_changeset_size_test 2.3 {
+  INSERT INTO t2 VALUES('a', 'b', 'c', 'd');
+  UPDATE t2 SET c='qwertyuiop' WHERE a='a';
+}
+
+do_changeset_size_test 2.4 {
+  DELETE FROM t2 WHERE a='a';
+  INSERT INTO t2 VALUES('a', 'b', 'c', 'd');
+}
+
+do_changeset_size_test 2.5 {
+  UPDATE t2 SET a='aa', b='bb' WHERE (a, b) = ('a', 'b');
+}
+
+do_changeset_size_test 2.6 {
+  UPDATE t2 SET a='a', b='b' WHERE (a, b) = ('aa', 'bb');
+}
+
+do_changeset_size_test 2.7 {
+  INSERT INTO t3 DEFAULT VALUES;
+  INSERT INTO t3 VALUES(1,2,3,4);
+}
+
+#-------------------------------------------------------------------------
+reset_db
+
+do_execsql_test 3.0 {
+  CREATE TABLE t1(a INTEGER PRIMARY KEY, b);
+}
+
+do_test 3.1 {
+  sqlite3session S db main
+  S object_config_size -1
+} 1
+
+do_test 3.2.1 { S object_config_size 0  } 0
+do_test 3.2.2 { S object_config_size -1 } 0
+do_test 3.2.3 { S object_config_size 1  } 1
+do_test 3.2.4 { S object_config_size -1 } 1
+
+do_test 3.3 { S attach t1 } {}
+do_test 3.4 { S object_config_size 1  } {SQLITE_MISUSE}
+do_test 3.4 { S object_config_size -1 } {1}
+
+S delete
+
+finish_test
+