php unit testing

I am using simpletest.org

class test extends unitTestCase{

 function test_pass (){

$bool=false;
$this->assertFalse($bool) ;


}

}

assertTrue($x)	asserts that $x is true
assertFalse($x)	asserts that $x is false
assertEqual($x, $y)	asserts that $x is equivalent to $y
asserNotEqual($x, $y)	asserts that $x is not equal to $y
assertNull($x)	asserts that $x is null
assertNotNull($x)	asserts that $x is not null
assertIsA($x, $t)	asserts that $x is of type $t
assertNotA($x, $t)	asserts that $x is not of type $t
assertWithinMargin($x, $y, $m)	asserts that |$x-$y| < $m is true
assertOutsideMargin($x, $y, $m)	asserts that |$x-$y| < $m is false
assertIdentical($x, $y)	asserts that $x == $y and that $x and $y are of the same type
asserNotIdentical($x, $y)	asserts that either $x != $y and/or $x and $y are of a different type
assertClone($x, $y)	asserts that $x and $y are identical copies
assertReference($x, $y)	asserts that $x and $y are the same variable
assertPattern($p, $x)	asserts that the regular expression $p matches $x
assertNoPattern($p, $y)	asserts that the regular expression $p doesn't match $x
expectError($x)	swallows any upcoming matching error
assert($e)	asserts that we get error error $e