PHPUnit9.0 断言-assertContainsOnly()

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

PHPUnit9.0 断言集合

当 ​$haystack​ 并非仅包含类型为 ​$type​ 的变量时报告错误，错误讯息由 ​$message​ 指定。
​$isNativeType​ 是一个标志，用来表明 ​$type​ 是否是原生 PHP 类型。
​assertNotContainsOnly()​ 是与之相反的断言，并接受相同的参数。

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.