PHPUnit9.0 断言-assertStringStartsWith()

assertStringStartsWith(string $prefix, string $string[, string $message = ''])

PHPUnit9.0 断言集合

当 ​$string​ 不以 ​$prefix​ 开头时报告错误，错误讯息由 ​$message​ 指定。
​assertStringStartsNotWith()​ 是与之相反的断言，并接受相同的参数。
示例 1.60 assertStringStartsWith() 的用法

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

final class StringStartsWithTest extends TestCase
{
    public function testFailure(): void
    {
        $this->assertStringStartsWith('prefix', 'foo');
    }
}

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

F

Time: 0 seconds, Memory: 5.00Mb

There was 1 failure:

1) StringStartsWithTest::testFailure
Failed asserting that 'foo' starts with "prefix".

/home/sb/StringStartsWithTest.php:6

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