MDEV-35813 test case

mysql-test/suite/innodb/r/log_write.result

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+# MDEV-35813 Unnecessary InnoDB log writes in INSERT…SELECT
+CREATE TABLE t1 (a INT PRIMARY KEY) ENGINE=InnoDB STATS_PERSISTENT=0;
+SET GLOBAL innodb_max_purge_lag_wait=0;
+SELECT variable_value INTO @log_writes FROM information_schema.global_status
+WHERE variable_name='innodb_log_writes';
+INSERT INTO t1 SELECT * FROM t1;
+SELECT variable_value-@log_writes FROM information_schema.global_status
+WHERE variable_name='innodb_log_writes';
+variable_value-@log_writes
+0
+DROP TABLE t1;

mysql-test/suite/innodb/t/log_write.test

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+--source include/have_innodb.inc
+
+--echo # MDEV-35813 Unnecessary InnoDB log writes in INSERT…SELECT
+
+CREATE TABLE t1 (a INT PRIMARY KEY) ENGINE=InnoDB STATS_PERSISTENT=0;
+SET GLOBAL innodb_max_purge_lag_wait=0;
+SELECT variable_value INTO @log_writes FROM information_schema.global_status
+WHERE variable_name='innodb_log_writes';
+INSERT INTO t1 SELECT * FROM t1;
+SELECT variable_value-@log_writes FROM information_schema.global_status
+WHERE variable_name='innodb_log_writes';
+DROP TABLE t1;