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datatable.directory/tests/Unit/ColumnNumeratorTest.php

73 lines
1.9 KiB

<?php
namespace Tests\Unit;
use App\Tables\ColumnNumerator;
use Tests\TestCase;
use Illuminate\Foundation\Testing\RefreshDatabase;
class ColumnNumeratorTest extends TestCase
{
public function testIncrementsWithDefaultInit()
{
$n = new ColumnNumerator();
self::assertEquals('a', $n->next());
self::assertEquals('b', $n->next());
self::assertEquals('c', $n->next());
}
public function testIncrementsWithCustomInit()
{
$n = new ColumnNumerator('r');
self::assertEquals('r', $n->next());
self::assertEquals('s', $n->next());
self::assertEquals('t', $n->next());
}
public function testIncrementsMultiChar()
{
$n = new ColumnNumerator('aaa');
self::assertEquals('aaa', $n->next());
self::assertEquals('aab', $n->next());
self::assertEquals('aac', $n->next());
}
public function testOverflowGrow()
{
$n = new ColumnNumerator('y');
self::assertEquals('y', $n->next());
self::assertEquals('z', $n->next());
self::assertEquals('aa', $n->next());
self::assertEquals('ab', $n->next());
}
public function testOverflowNoGrow()
{
$n = new ColumnNumerator('yy');
self::assertEquals('yy', $n->next());
self::assertEquals('yz', $n->next());
self::assertEquals('za', $n->next());
self::assertEquals('zb', $n->next());
}
public function testResume()
{
$n = new ColumnNumerator('yy');
self::assertEquals('yy', $n->next());
self::assertEquals('yz', $n->next());
$n2 = new ColumnNumerator($n->getState());
unset($n);
self::assertEquals('za', $n2->next(), 'recreated numerator continues');
self::assertEquals('zb', $n2->next());
self::assertEquals($n2->getState(), 'zc', 'State is next string');
}
}