assertFileExists()函数是PHPUnit中的内置函数,用于检查文件路径是否存在。如果给定文件路径存在,则此断言将返回true,否则返回false。如果为真,则通过断言的测试用例,否则测试用例失败。
用法:
assertFileExists(string $filename[, string $message = ''])
参数:此函数接受上述和以下描述的两个参数:
- $filename:此参数是表示文件路径的字符串。
- $message:此参数采用字符串值。当测试用例失败时,此字符串消息将显示为错误消息。
以下示例程序旨在说明PHPUnit中的assertFileExists()函数:
范例1:
PHP
<?php
use PHPUnit\Framework\TestCase;
class GeeksPhpunitTestCase extends TestCase
{
public function testNegativeTestcaseForAssertFileExists()
{
$filename = "/home/Documents/geeksDoesNotExist/";
// Assert function to test whether given
// file path exists or not
$this->assertFileExists(
$filename,
"given filename doesn't exists"
);
}
}
?>
输出:
PHPUnit 8.5.8 by Sebastian Bergmann and contributors. F 1 / 1 (100%) Time:391 ms, Memory:10.00 MB There was 1 failure: 1) GeeksPhpunitTestCase::testNegativeTestcaseForAssertFileExists given filename doesn't exists Failed asserting that file "/home/Documents/geeksDoesNotExist/" exists. /home/lovely/Documents/php/test.php:15 FAILURES! Tests:1, Assertions:1, Failures:1.
范例2:
PHP
<?php
use PHPUnit\Framework\TestCase;
class GeeksPhpunitTestCase extends TestCase
{
public function testPositiveTestcaseForAssertFileExists()
{
$filename = "/home/bittu/Documents/php/";
// Assert function to test whether given
// file name exists or not
$this->assertFileExists(
$filename,
"filename doesn't exists"
);
}
}
?>
输出:
PHPUnit 8.5.8 by Sebastian Bergmann and contributors. . 1 / 1 (100%) Time:88 ms, Memory:10.00 MB OK (1 test, 1 assertion)
参考:https://phpunit.readthedocs.io/en/8.2/assertions.html#assertfileexists
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注:本文由纯净天空筛选整理自shubham_singh大神的英文原创作品 PHPUnit assertFileExists() Function。非经特殊声明,原始代码版权归原作者所有,本译文未经允许或授权,请勿转载或复制。