/**
  * isFalseVal testen
  */
 public function testIsFalseVal()
 {
     $this->assertTrue(tx_mklib_util_String::isFalseVal(false));
     $this->assertTrue(tx_mklib_util_String::isFalseVal('false'));
     $this->assertTrue(tx_mklib_util_String::isFalseVal('0'));
     $this->assertTrue(tx_mklib_util_String::isFalseVal(0));
     $this->assertFalse(tx_mklib_util_String::isFalseVal(true));
     $this->assertFalse(tx_mklib_util_String::isFalseVal('true'));
     $this->assertFalse(tx_mklib_util_String::isFalseVal('TrUe'));
     $this->assertFalse(tx_mklib_util_String::isFalseVal('1'));
     $this->assertFalse(tx_mklib_util_String::isFalseVal(1));
 }