<?php
declare(strict_types=1);

use PHPUnit\Framework\TestCase;

require_once __DIR__ . '/../../php/markdown.php';
require_once __DIR__ . '/../../php/spreadsheet.php';

final class CellAddressRangeTests extends TestCase {
	public function test_iterator() {
		$grid = new SpreadsheetGrid(3, 4);
		$range = new CellAddressRange(new CellAddress(0, 0), new CellAddress(2, 3));
		$visited = [];
		$sanity = 100;
		foreach ($range->cellsIn($grid) as $address_string => $cell) {
			array_push($visited, $address_string);
			if ($sanity-- < 0) break;
		}
		$actual = implode(',', $visited);
		$expected = 'A1,A2,A3,A4,B1,B2,B3,B4,C1,C2,C3,C4';
		$this->assertSame($expected, $actual);
	}

	public function test_iterator_column() {
		$grid = new SpreadsheetGrid(3, 4);
		$range = new CellAddressRange(new CellAddress(1, -1), new CellAddress(2, -1));
		$visited = [];
		$sanity = 100;
		foreach ($range->cellsIn($grid) as $address_string => $cell) {
			array_push($visited, $address_string);
			if ($sanity-- < 0) break;
		}
		$actual = implode(',', $visited);
		$expected = 'B1,B2,B3,B4,C1,C2,C3,C4';
		$this->assertSame($expected, $actual);
	}

	public function test_iterator_beyondBounds() {
		$grid = new SpreadsheetGrid(3, 4);
		$range = new CellAddressRange(new CellAddress(0, 1), new CellAddress(9, 9));
		$visited = [];
		$sanity = 100;
		foreach ($range->cellsIn($grid) as $address_string => $cell) {
			array_push($visited, $address_string);
			if ($sanity-- < 0) break;
		}
		$actual = implode(',', $visited);
		$expected = 'A2,A3,A4,B2,B3,B4,C2,C3,C4';
		$this->assertSame($expected, $actual);
	}

	public function test_iterator_outOfBounds() {
		$grid = new SpreadsheetGrid(3, 4);
		$range = new CellAddressRange(new CellAddress(5, 0), new CellAddress(5, 9));
		$visited = [];
		$sanity = 100;
		foreach ($range->cellsIn($grid) as $address_string => $cell) {
			array_push($visited, $address_string);
			if ($sanity-- < 0) break;
		}
		$actual = implode(',', $visited);
		$expected = '';
		$this->assertSame($expected, $actual);
	}
}
?>