[Mime] Fix case-sensitive handling in Headers::isUniqueHeader()
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@ -201,7 +201,7 @@ final class Headers
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public static function isUniqueHeader(string $name): bool
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{
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return \in_array($name, self::UNIQUE_HEADERS, true);
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return \in_array(strtolower($name), self::UNIQUE_HEADERS, true);
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}
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public function toString(): string
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@ -212,6 +212,11 @@ class HeadersTest extends TestCase
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$this->assertFalse($headers->has('Message-ID'));
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}
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public function testIsUniqueHeaderIsNotCaseSensitive()
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{
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$this->assertTrue(Headers::isUniqueHeader('From'));
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}
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public function testToStringJoinsHeadersTogether()
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{
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$headers = new Headers();
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