<?php

declare( strict_types=1 );

namespace Tests\Functions;


use Hosterra\FluxBuilder\Expression\KeyFilter;
use Hosterra\FluxBuilder\Functions\Filter;
use PHPUnit\Framework\TestCase;

final class FilterFunctionTest extends TestCase {

	public function testFieldFilter() {
		$expression = new Filter( [ 'user', 'field2', 'field3' ] );

		$query = '|> filter(fn: (r) => r._field == "user" or r._field == "field2" or r._field == "field3") ';

		$this->assertEquals( $expression->__toString(), $query );
	}

	public function testKeyFilter() {
		$expression = new Filter( KeyFilter::setEqualTo( '_measurement', 'test_measurement' )
		                                   ->andEqualTo( '_field', 'user' )
		                                   ->orEqualTo( '_field', 'field2' )
		                                   ->andEqualTo( 'user', 'my_username' ) );

		$query = '|> filter(fn: (r) => r._measurement == "test_measurement" and r._field == "user" or ' .
		         'r._field == "field2" and r.user == "my_username") ';

		$this->assertEquals( $expression->__toString(), $query );
	}
}