public function testDecribesActualTypeInMismatchMessage()
{
$this->assertMismatchDescription('was null', doubleValue(), null);
$this->assertMismatchDescription('was a string "foo"', doubleValue(), 'foo');
}
/**
* This method is a simple wrapper around the evaluate(String) method. Its
* purpose is to return a more friendly double return value instead of the
* string number that is normally returned.
*
* @param $expression
* @return string
* @throws EvaluationException
*/
public function getNumberResult($expression)
{
$result = $this->evaluate1(expression);
$doubleResult = null;
try {
$doubleResult = new Double(result);
} catch (NumberFormatException $nfe) {
throw new EvaluationException("Expression does not produce a number.", $nfe);
}
return doubleResult . doubleValue();
}
