PHPUnit_Framework_Assert::stringContains PHP Method

    public static function stringContains($string, $case = true)
    {
        return new PHPUnit_Framework_Constraint_StringContains($string, $case);
    }

 /**
  * @covers PHPUnit_Framework_Constraint_StringContains
  * @covers PHPUnit_Framework_Constraint_Not
  * @covers PHPUnit_Framework_Assert::stringContains
  * @covers PHPUnit_Framework_Assert::logicalNot
  */
 public function testConstraintStringNotContains2()
 {
     $constraint = PHPUnit_Framework_Assert::logicalNot(PHPUnit_Framework_Assert::stringContains('foo'));
     try {
         $constraint->fail('barfoobar', 'custom message', TRUE);
     } catch (PHPUnit_Framework_ExpectationFailedException $e) {
         $this->assertEquals("custom message\nFailed asserting that <string:barfoobar> does not contain \"foo\".", $e->getDescription());
         return;
     }
     $this->fail();
 }