Support $this->assertIsString

[amalricBzh]

Hi,

I have this code :

$content = $client->getResponse()->getContent();
$this->assertIsString($content);
$this->assertJson($content);

phpstan throws an error:

Parameter #1 $actualJson of method PHPUnit\Framework\Assert::assertJson() expects string, string|false given.

I expect that phpstan understand that if assertIsString($content) passed, $content is a string, and phpstan should not throw an error.

My composer file:

"require-dev": {
    "phpstan/phpstan": "^0.11",
    "phpstan/phpstan-phpunit": "^0.11",
    [...]
}

[ondrejmirtes]

Hi, upgrade to ^0.12, assertIsString is supported there.

You shouldn't have any problems upgrading to the latest versions. If you don't have time to fix newly reported errors now, you can take advantage of a feature called the baseline: https://medium.com/@ondrejmirtes/phpstans-baseline-feature-lets-you-hold-new-code-to-a-higher-standard-e77d815a5dff

[github-actions]

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