added tests for PHP version comparing functions

pear/tests/pear_versioncmp.phpt

@@ -0,0 +1,65 @@
+--TEST--
+PEAR::phpVersionIs()
+--SKIPIF--
+--FILE--
+<?php
+// Test for PEAR::phpVersionIs()
+
+require_once '../PEAR.php';
+
+define (PHP_CURRENT_VER, '4.0.7');
+
+function cmp($param1=null, $param2=null, $expected)
+{
+    echo PHP_CURRENT_VER;
+    if ($param1) {
+        echo " minor than $param1";
+    }
+    if ($param2) {
+        echo " greater than $param2";
+    }
+    $res = PEAR::phpVersionIs($param1, $param2, PHP_CURRENT_VER);
+    echo " is ";
+    echo ($res) ? "TRUE" : "FALSE";
+    if ($expected === $res) {
+        echo "     OK\n";
+    } else {
+        echo "     FAIL\n";
+    }
+}
+$vers = array(
+    array('4.0.5', null, false),
+    array('4.0.99', null, true),
+    array(PHP_CURRENT_VER, null, false),
+    array('4.0.99pl1', null, true),
+    array('4.0.99RC1', null, true),
+    array('4.0.99-dev', null, true),
+    array(null, '4.0.5', true),
+    array(null, '4.0.99', false),
+    array(null, PHP_CURRENT_VER, false),
+    array('4.0.5', '4.0.99', false),
+    array('4.0.99', '4.0.5', true),
+    array(PHP_CURRENT_VER, '4.0.5', false),
+    array('4.0.99', PHP_CURRENT_VER, false)
+);
+
+foreach ($vers as $ver) {
+    cmp($ver[0], $ver[1], $ver[2]);
+}
+?>
+--GET--
+--POST--
+--EXPECT--
+4.0.7 minor than 4.0.5 is FALSE     OK
+4.0.7 minor than 4.0.99 is TRUE     OK
+4.0.7 minor than 4.0.7 is FALSE     OK
+4.0.7 minor than 4.0.99pl1 is TRUE     OK
+4.0.7 minor than 4.0.99RC1 is TRUE     OK
+4.0.7 minor than 4.0.99-dev is TRUE     OK
+4.0.7 greater than 4.0.5 is TRUE     OK
+4.0.7 greater than 4.0.99 is FALSE     OK
+4.0.7 greater than 4.0.7 is FALSE     OK
+4.0.7 minor than 4.0.5 greater than 4.0.99 is FALSE     OK
+4.0.7 minor than 4.0.99 greater than 4.0.5 is TRUE     OK
+4.0.7 minor than 4.0.7 greater than 4.0.5 is FALSE     OK
+4.0.7 minor than 4.0.99 greater than 4.0.7 is FALSE     OK