phpunit 认为两个相等的字符串不相等

Question

我正在使用一些代码将 ISO-8859 字符串转换为 utf8。然后我想断言它已正确转换。代码是:

class EncodingTest extends TestCase {

    public function testImapUtf8()
    {
        $pairs = [
            ['=?ISO-8859-13?Q?Darba_s=E2k=F0ana_ar_Gmail?=', 'Darba sākšana ar Gmail'],
            ['Normal text', 'Normal text'], 
            ['Darba sākšana ar Gmail', 'Darba sākšana ar Gmail'],
        ];

        foreach ($pairs as $pair) {
            $this->assertEquals(($pair[1]), (imap_utf8($pair[0])));
        }
    }
}

但是，对于第一对，它给了我一个错误:

1) EncodingTest::testImapUtf8
Failed asserting that two strings are equal.
--- Expected
+++ Actual
@@ @@
-'Darba sākšana ar Gmail'
+'Darba sākšana ar Gmail'

字符串看起来一样。我猜有一些看不见的人物。如何测试 imap_utf8 是否按预期工作？

Answer 1

我 var_dumped 这两个变量，发现长度不相等

var_dump(imap_utf8('=?ISO-8859-13?Q?Darba_s=E2k=F0ana_ar_Gmail?='));
var_dump( 'Darba sākšana ar Gmail');

字符串(26)“Darba sākšana ar Gmail”

字符串(24)“Darba sākšana ar Gmail”

您可以使用utf8_decode函数修复长度问题。试试这个

$this->assertEquals(($pair[1]), (utf8_decode(imap_utf8($pair[0]))));