public function testFunctionNotFound()
{
$foo = new E\Func('abracadabra');
try {
$foo->interpret($this->ctx);
$this->assertTrue(false, 'FunctionNotFoundException should be thrown');
} catch (E\FunctionNotFoundException $e) {
}
}
protected function setUp()
{
I\Expression\Func::register('twice', function ($a) {
return 2 * $a;
});
I\Expression\Func::register('PI', function () {
return pi();
});
I\Expression\Func::register('sin', function ($a) {
return sin($a);
});
I\Expression\Func::register('cos', function ($a) {
return cos($a);
});
}
Func::register('ln', function ($a) {
return log($a);
});
Func::register('lg', function ($a) {
return log($a, 10);
});
// aggregates
Func::register('sum', function () {
return array_sum(func_get_args());
});
Func::register('min', function () {
return min(func_get_args());
});
Func::register('max', function () {
return max(func_get_args());
});
Func::register('avg', function () {
$mul = 1;
foreach (func_get_args() as $i => $n) {
$mul *= $n;
}
return pow($mul, 1 / func_num_args());
});
Func::register('const', function ($name) {
switch ($name) {
case 'pi':
return M_PI;
case 'exp':
return M_E;
}
});