/**
* @param string $operator
* @return $this
*/
public function operator($operator)
{
$this->process(OperatorFactory::createOperator($operator));
return $this;
}
<?php
use Calculator\OperatorFactory;
describe('OperatorFactory', function () {
describe('createOperator', function () {
it('creates operator object', function () {
expect(OperatorFactory::createOperator('+'))->toBeAnInstanceOf('Calculator\\Operator\\Add');
expect(OperatorFactory::createOperator('-'))->toBeAnInstanceOf('Calculator\\Operator\\Subtract');
expect(OperatorFactory::createOperator('*'))->toBeAnInstanceOf('Calculator\\Operator\\Multiply');
expect(OperatorFactory::createOperator('/'))->toBeAnInstanceOf('Calculator\\Operator\\Divide');
expect(OperatorFactory::createOperator('^'))->toBeAnInstanceOf('Calculator\\Operator\\Pow');
expect(OperatorFactory::createOperator('√'))->toBeAnInstanceOf('Calculator\\Operator\\SquareRoot');
expect(OperatorFactory::createOperator('sqrt'))->toBeAnInstanceOf('Calculator\\Operator\\SquareRoot');
expect(OperatorFactory::createOperator('sin'))->toBeAnInstanceOf('Calculator\\Operator\\Sine');
expect(OperatorFactory::createOperator('cos'))->toBeAnInstanceOf('Calculator\\Operator\\Cosine');
expect(OperatorFactory::createOperator('tan'))->toBeAnInstanceOf('Calculator\\Operator\\Tangent');
expect(OperatorFactory::createOperator('asin'))->toBeAnInstanceOf('Calculator\\Operator\\ArcSine');
expect(OperatorFactory::createOperator('acos'))->toBeAnInstanceOf('Calculator\\Operator\\ArcCosine');
expect(OperatorFactory::createOperator('atan'))->toBeAnInstanceOf('Calculator\\Operator\\ArcTangent');
});
it('does not create an operator object', function () {
expect(function () {
OperatorFactory::createOperator('£');
})->toThrow(new \Calculator\Exception\InvalidOperatorException('£'));
expect(function () {
OperatorFactory::createOperator(null);
})->toThrow(new \Calculator\Exception\InvalidOperatorException(null));
});
});
});
