PHP PHPUnit assertStringEqualsFile()用法及代码示例

assertStringEqualsFile()函数是PHPUnit中的内置函数，用于断言所获得的实际字符串内容是否等于预期的文件。如果预期的文件内容与实际的字符串内容相同，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:

assertStringEqualsFile(string $expectedFile, 
string $actualString[, string $message = ''])

参数：此函数接受上述和以下所述的三个参数：

$expectedfile:此参数可以是代表所需文件的任何类型。
$actualstring:此参数可以是代表实际字符串内容的任何类型。
$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。

以下示例说明了PHPUnit中的assertStringEqualsFile()函数：

范例1：

PHP

<?php  
use PHPUnit\Framework\TestCase;  
    
class GeeksPhpunitTestCase extends TestCase  
{  
    public function testNegativeTestcaseForassertStringEqualsFile() 
    {  
        $expectedfile = "/home/lovely/Documents/php/abc"; 
        $actualstring = "File has geeksforgeeks";  
    
        // Assert function to test whether  
        // expected file content is equal to  
        // actual string content or not  
        $this->assertStringEqualsFile( 
            $expectedfile, 
            $actualstring,  
            "actual string content is equals to 
             expected file content or not" 
        );  
    }  
}  
    
?>

输出：

PHPUnit 8.5.8 by Sebastian Bergmann and contributors.

F                                                         1 / 1 (100%)

Time:89 ms, Memory:10.00 MB

There was 1 failure:

1) GeeksPhpunitTestCase::testNegativeTestcaseForassertStringEqualsFile
actual string content is not equals to expected file content
Failed asserting that two strings are equal.
--- Expected
+++ Actual
@@ @@
-'File has not geeksforgeeks'
+'File has geeksforgeeks'

/home/lovely/Documents/php/test.php:17

FAILURES!
Tests:1, Assertions:2, Failures:1.

范例2：

PHP

<?php  
use PHPUnit\Framework\TestCase;  
    
class GeeksPhpunitTestCase extends TestCase  
{  
    public function testPositiveTestcaseForassertStringEqualsFile() 
    {  
        $expectedfile = "/home/lovely/Documents/php/abc"; 
        $actualstring = "File has geeksforgeeks";  
    
        // Assert function to test whether  
        // expected file content is equal  
        // to actual string content or not  
        $this->assertStringEqualsFile( 
            $expectedfile, 
            $actualstring,  
            "actual string content is equals  
             to expected file content or not" 
        );  
    }  
}  
    
?>

输出：

PHPUnit 8.5.8 by Sebastian Bergmann and contributors.

.                                                  1 / 1 (100%)

Time:87 ms, Memory:10.00 MB

OK (1 test, 2 assertions)

参考： https://phpunit.readthedocs.io/en/9.2/assertions.html#assertstringequalsfile

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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 assertStringEqualsFile() 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。