/**
  * throws exceptions if $item is not a double, or something that can
  * be cast as a double
  *
  * this is a wrapper around our IsDouble check
  *
  * @param  mixed $item
  *         the container to check
  * @param  string $exception
  *         the class to use when throwing an exception
  * @return void
  */
 public static function check($item, $exception = E4xx_UnsupportedType::class)
 {
     // make sure we have a double
     if (!IsDouble::check($item)) {
         throw new $exception(SimpleType::from($item));
     }
 }
 /**
  * @covers ::__invoke
  * @covers ::check
  */
 public function testCanDetectDoublesInStrings()
 {
     // ----------------------------------------------------------------
     // setup your test
     $obj = new IsDouble();
     $data = "3.1415927";
     // ----------------------------------------------------------------
     // perform the change
     $actualResult1 = $obj($data);
     $actualResult2 = IsDouble::check($data);
     // ----------------------------------------------------------------
     // test the results
     $this->assertTrue($actualResult1);
     $this->assertTrue($actualResult2);
 }