public function testAggregates()
{
$tradedate = date('Y-m-d');
$count = 10;
$qs = Trade::objects()->filter('tradedate', '=', $tradedate);
// Delete any existing trades for today
$qs->delete();
// Create trades with random prices and quantitities
$prices = array();
$quantities = array();
foreach (range(1, $count) as $tradeno) {
$price = rand(100, 100000) / 100;
$quantity = rand(1, 10000);
$t = new Trade();
$t->merge(compact('tradedate', 'tradeno', 'price', 'quantity'));
$t->insert();
$prices[] = $price;
$quantities[] = $quantity;
}
// Calculate expected values
$avgPrice = array_sum($prices) / count($prices);
$maxPrice = max($prices);
$minPrice = min($prices);
$sumPrice = array_sum($prices);
$avgQuantity = array_sum($quantities) / count($quantities);
$maxQuantity = max($quantities);
$minQuantity = min($quantities);
$sumQuantity = array_sum($quantities);
$this->assertSame($count, $qs->count());
$this->assertEquals($avgPrice, $qs->avg('price'));
$this->assertEquals($minPrice, $qs->min('price'));
$this->assertEquals($avgPrice, $qs->avg('price'));
$this->assertEquals($sumPrice, $qs->sum('price'));
$this->assertEquals($avgQuantity, $qs->avg('quantity'));
$this->assertEquals($minQuantity, $qs->min('quantity'));
$this->assertEquals($avgQuantity, $qs->avg('quantity'));
$this->assertEquals($sumQuantity, $qs->sum('quantity'));
}
/**
* @expectedException \Exception
* @expectedExceptionMessage Cannot insert. Primary key column(s) not set.
*/
public function testNewTradeHalfPkSet()
{
$t = new Trade();
$t->tradedate = date('Y-m-d');
$t->insert();
}