- Add a test on null columns

added:
  mysql-test/suite/connect/r/null.result
  mysql-test/suite/connect/t/null.test

mysql-test/suite/connect/r/null.result

+#
+# Testing FIX null columns
+#
+CREATE TABLE t1
+(
+id INT
+) ENGINE=CONNECT TABLE_TYPE=FIX FILE_NAME='t1.txt';
+ERROR HY000: Table type FIX does not support nullable columns
+#
+# Testing CSV null columns
+#
+CREATE TABLE t1
+(
+id INT
+) ENGINE=CONNECT TABLE_TYPE=CSV FILE_NAME='t1.csv';
+ERROR HY000: Table type CSV does not support nullable columns
+#
+# Testing VEC null columns
+#
+CREATE TABLE t1
+(
+id INT
+) ENGINE=CONNECT TABLE_TYPE=VEC FILE_NAME='t1.vec';
+ERROR HY000: Table type VEC does not support nullable columns
+#
+# Testing DOS null columns
+#
+CREATE TABLE t1
+(
+id INT
+) ENGINE=CONNECT FILE_NAME='t1.txt';
+ERROR HY000: Table type DOS does not support nullable columns
+#
+# Testing DBF null columns
+#
+CREATE TABLE t1
+(
+id INT
+) ENGINE=CONNECT TABLE_TYPE=DBF FILE_NAME='t1.dbf';
+ERROR HY000: Table type DBF does not support nullable columns
+#
+# Testing INI null columns
+#
+CREATE TABLE t1
+(
+`sec` char(8) NOT NULL flag=1,
+`key` char(12)
+) ENGINE=CONNECT TABLE_TYPE=INI;
+INSERT INTO t1(sec) values('S1');
+SELECT * FROM t1;
+sec	key
+INSERT INTO t1 values('S1','Newval');
+SELECT * FROM t1;
+sec	key
+S1	Newval
+DROP TABLE t1;

mysql-test/suite/connect/t/null.test

+let $MYSQLD_DATADIR= `select @@datadir`;
+
+--echo #
+--echo # Testing FIX null columns
+--echo #
+--error ER_UNKNOWN_ERROR
+CREATE TABLE t1
+(
+  id INT
+) ENGINE=CONNECT TABLE_TYPE=FIX FILE_NAME='t1.txt';
+
+--echo #
+--echo # Testing CSV null columns
+--echo #
+--error ER_UNKNOWN_ERROR
+CREATE TABLE t1
+(
+  id INT
+) ENGINE=CONNECT TABLE_TYPE=CSV FILE_NAME='t1.csv';
+
+--echo #
+--echo # Testing VEC null columns
+--echo #
+--error ER_UNKNOWN_ERROR
+CREATE TABLE t1
+(
+  id INT
+) ENGINE=CONNECT TABLE_TYPE=VEC FILE_NAME='t1.vec';
+
+--echo #
+--echo # Testing DOS null columns
+--echo #
+--error ER_UNKNOWN_ERROR
+CREATE TABLE t1
+(
+  id INT
+) ENGINE=CONNECT FILE_NAME='t1.txt';
+
+--echo #
+--echo # Testing DBF null columns
+--echo #
+--error ER_UNKNOWN_ERROR
+CREATE TABLE t1
+(
+  id INT
+) ENGINE=CONNECT TABLE_TYPE=DBF FILE_NAME='t1.dbf';
+
+--echo #
+--echo # Testing INI null columns
+--echo #
+CREATE TABLE t1
+(
+  `sec` char(8) NOT NULL flag=1,
+  `key` char(12)
+) ENGINE=CONNECT TABLE_TYPE=INI;
+INSERT INTO t1(sec) values('S1');
+SELECT * FROM t1;
+INSERT INTO t1 values('S1','Newval');
+SELECT * FROM t1;
+DROP TABLE t1;