PHPUnit9.0 斷言-assertContainsOnly()

assertContainsOnly(string $type, iterable $haystack[, boolean $isNativeType = null, string $message = ''])

PHPUnit9.0 斷言集合

當(dāng) ?$haystack? 并非僅包含類型為 ?$type? 的變量時(shí)報(bào)告錯(cuò)誤，錯(cuò)誤訊息由 ?$message? 指定。
?$isNativeType? 是一個(gè)標(biāo)志，用來(lái)表明 ?$type? 是否是原生 PHP 類型。
?assertNotContainsOnly()? 是與之相反的斷言，并接受相同的參數(shù)。

示例 1.7 assertContainsOnly() 的用法

<?php declare(strict_types=1);
use PHPUnit\Framework\TestCase;

final class ContainsOnlyTest extends TestCase
{
    public function testFailure(): void
    {
        $this->assertContainsOnly('string', ['1', '2', 3]);
    }
}

$ phpunit ContainsOnlyTest
PHPUnit latest.0 by Sebastian Bergmann and contributors.

F

Time: 0 seconds, Memory: 5.00Mb

There was 1 failure:

1) ContainsOnlyTest::testFailure
Failed asserting that Array (
    0 => '1'
    1 => '2'
    2 => 3
) contains only values of type "string".

/home/sb/ContainsOnlyTest.php:6

FAILURES!
Tests: 1, Assertions: 1, Failures: 1.