diff --git a/htdocs/sql/test/PMA_isValid_test.php b/htdocs/sql/test/PMA_isValid_test.php
new file mode 100755
--- /dev/null
+++ b/htdocs/sql/test/PMA_isValid_test.php
@@ -0,0 +1,112 @@
+<?php
+/* vim: expandtab sw=4 ts=4 sts=4: */
+/**
+ * tests for PMA_pow()
+ *
+ * @version $Id: PMA_pow_test.php 10140 2007-03-20 08:32:55Z cybot_tm $
+ * @package phpMyAdmin-test
+ */
+
+/**
+ *
+ */
+require_once 'PHPUnit/Framework.php';
+require_once './libraries/core.lib.php';
+
+class PMA_isValid_test extends PHPUnit_Framework_TestCase
+{
+    public function testVarNotSetAfterTest()
+    {
+        PMA_isValid($var);
+        $this->assertFalse(isset($var));
+    }
+    public function testNotSet()
+    {
+        $this->assertFalse(PMA_isValid($var));
+    }
+    public function testEmptyString()
+    {
+        $var = '';
+        $this->assertFalse(PMA_isValid($var));
+    }
+    public function testNotEmptyString()
+    {
+        $var = '0';
+        $this->assertTrue(PMA_isValid($var));
+    }
+    public function testZero()
+    {
+        $var = 0;
+        $this->assertTrue(PMA_isValid($var));
+    }
+    public function testNullFail()
+    {
+        $var = null;
+        $this->assertFalse(PMA_isValid($var));
+    }
+    public function testNotSetArray()
+    {
+        $this->assertFalse(PMA_isValid($array['x']));
+    }
+    public function testScalarString()
+    {
+        $var = 'string';
+        $this->assertTrue(PMA_isValid($var, 'scalar'));
+    }
+    public function testScalarInt()
+    {
+        $var = 1;
+        $this->assertTrue(PMA_isValid($var, 'scalar'));
+    }
+    public function testScalarFloat()
+    {
+        $var = 1.1;
+        $this->assertTrue(PMA_isValid($var, 'scalar'));
+    }
+    public function testScalarBool()
+    {
+        $var = true;
+        $this->assertTrue(PMA_isValid($var, 'scalar'));
+    }
+    public function testNotScalarArray()
+    {
+        $var = array('test');
+        $this->assertFalse(PMA_isValid($var, 'scalar'));
+    }
+    public function testNotScalarNull()
+    {
+        $var = null;
+        $this->assertFalse(PMA_isValid($var, 'scalar'));
+    }
+    public function testNumericInt()
+    {
+        $var = 1;
+        $this->assertTrue(PMA_isValid($var, 'numeric'));
+    }
+    public function testNumericFloat()
+    {
+        $var = 1.1;
+        $this->assertTrue(PMA_isValid($var, 'numeric'));
+    }
+    public function testNumericZero()
+    {
+        $var = 0;
+        $this->assertTrue(PMA_isValid($var, 'numeric'));
+    }
+    public function testNumericString()
+    {
+        $var = '+0.1';
+        $this->assertTrue(PMA_isValid($var, 'numeric'));
+    }
+    public function testValueInArray()
+    {
+        $var = 'a';
+        $this->assertTrue(PMA_isValid($var, array('a', 'b', )));
+    }
+    public function testValueNotInArray()
+    {
+        $var = 'c';
+        $this->assertFalse(PMA_isValid($var, array('a', 'b', )));
+    }
+}
+?>
\ No newline at end of file