1 files changed, 41 insertions, 0 deletions
diff --git a/t/23_nulls.t b/t/23_nulls.t
new file mode 100644
index 0000000..1cd0625
--- /dev/null
+++ b/t/23_nulls.t
@@ -0,0 +1,41 @@
+#!/usr/bin/perl
+
+# This is a test for correctly handling NULL values.
+
+use strict;
+BEGIN {
+	$|  = 1;
+	$^W = 1;
+}
+
+use t::lib::Test;
+use Test::More tests => 9;
+
+# Create a database
+my $dbh = connect_ok();
+
+# Create the table
+ok( $dbh->do(<<'END_SQL'), 'CREATE TABLE' );
+CREATE TABLE one (
+    id INTEGER,
+    name CHAR (64)
+)
+END_SQL
+
+# Test whether or not a field containing a NULL is returned correctly
+# as undef, or something much more bizarre.
+ok(
+	$dbh->do('INSERT INTO one VALUES ( NULL, ? )', {}, 'NULL-valued id' ),
+	'INSERT',
+);
+
+SCOPE: {
+	my $sth = $dbh->prepare('SELECT * FROM one WHERE id IS NULL');
+	isa_ok( $sth, 'DBI::st' );
+	ok( $sth->execute, '->execute ok' );
+	my $row = $sth->fetchrow_arrayref;
+	is( scalar(@$row), 2, 'Two values in the row' );
+	is( $row->[0], undef, 'First column is undef' );
+	is( $row->[1], 'NULL-valued id', 'Second column is defined' );
+	ok( $sth->finish, '->finish' );
+}