public function testFluentCalculatorCanKeepDifferentTotals()
{
$this->calculator->add(10);
$this->calculator->with('sales')->add(30);
$this->assertEquals(10, $this->calculator->get('default'));
$this->assertEquals(30, $this->calculator->get('sales'));
$this->calculator->subtract(5);
$this->assertEquals(25, $this->calculator->get('sales'));
$this->assertEquals(25, $this->calculator->get());
}
public function testWriterHandlesBasicOperations()
{
$this->calc->set(10)->add(10);
$this->assertEquals('10 + 10', $this->getExpression());
$this->calc->subtract(5);
$this->assertEquals('10 + 10 - 5', $this->getExpression());
$this->calc->multiply(50);
$this->assertEquals('10 + 10 - 5 * 50', $this->getExpression());
$this->calc->divide(2);
$this->assertEquals('10 + 10 - 5 * 50 / 2', $this->getExpression());
$this->calc->reset()->set(10)->add(10)->subtract(5)->multiply(50)->divide(2);
$this->assertEquals('10 + 10 - 5 * 50 / 2', $this->getExpression());
}
