Add unit test

Author: NattyNarwhal

tests/test_boolean.phpt

@@ -0,0 +1,61 @@
+--TEST--
+IBM-DB2: Boolean data type test.
+--SKIPIF--
+<?php
+
+require_once('skipif.inc');
+
+// This test requires IBM i 7.5 or a version of LUW that supports boolean
+require_once('connection.inc');
+$conn = db2_connect($database, $user, $password);
+if (!$conn) {
+	die("skip can't connect to DB:" . db2_conn_errormsg());
+}
+
+$info = db2_server_info($conn);
+if ($info->DBMS_NAME == "AS") { // IBM i
+	// DBMS_VER is VVRRM string
+	$major = $info[1];
+	$minor = $info[3];
+	$mod = $info[4];
+	if (!version_compare("$major.$minor.$mod", "7.5.0", ">=")) {
+		die("skip IBM i version too old");
+	}
+}
+// XXX: LUW, z
+
+?>
+--FILE--
+<?php
+
+require_once('connection.inc');
+$conn = db2_connect($database, $user, $password);
+
+if (!$conn) {
+	echo "Error connecting to database " . db2_conn_errormsg() ."\n";
+	exit;
+}
+
+$s = db2_exec("values (true, false)");
+$r = db2_fetch_array($s);
+var_dump($r);
+
+$s = db2_exec("values (true, false)");
+db2_fetch_row($s);
+var_dump(db2_result($s, 0));
+var_dump(db2_result($s, 1));
+echo db2_field_type($s, 1) . "\n";
+
+db2_close($conn);
+
+?>
+--EXPECT--
+array(2) {
+  [0]=>
+  bool(true)
+  [1]=>
+  bool(false)
+}
+bool(true)
+bool(false)
+boolean