Update FileMessageTest.php

Author: stevebauman

tests/Unit/FileMessageTest.php

@@ -1,6 +1,7 @@
 <?php
 
 use DirectoryTree\ImapEngine\Attachment;
+use DirectoryTree\ImapEngine\Enums\ImapFlag;
 use DirectoryTree\ImapEngine\Exceptions\RuntimeException;
 use DirectoryTree\ImapEngine\FileMessage;
 
@@ -10,6 +11,24 @@
     $message->parse();
 })->throws(RuntimeException::class);
 
+test('it throws exception when uid is called', function () {
+    $message = new FileMessage('test');
+
+    $message->uid();
+})->throws(BadMethodCallException::class);
+
+test('it throws exception when flag is called', function () {
+    $message = new FileMessage('test');
+
+    $message->flag(ImapFlag::Seen, '+');
+})->throws(BadMethodCallException::class);
+
+test('it returns empty flags', function () {
+    $message = new FileMessage('test');
+
+    expect($message->flags())->toBe([]);
+});
+
 test('it can parse a standard EML message and read basic headers', function () {
     $contents = <<<'EOT'
     From: "John Doe" <[email protected]>