Refactor emailcontext

tests/behat/features/bootstrap/EmailContext.php

@@ -10,7 +10,7 @@
 use Symfony\Component\Finder\Finder;
 use Symfony\Component\Finder\SplFileInfo;
 use Symfony\Component\Mime\Email as MimeEmail;
-use Drupal\symfony_mailer\Email as SymfonyEmail;
+use Drupal\symfony_mailer\Email as DrupalSymfonyEmail;
 use Symfony\Component\Mime\Header\Headers;
 use Symfony\Component\Mime\Header\UnstructuredHeader;
 use Drupal\symfony_mailer\Address;
@@ -88,26 +88,14 @@ public function extractSentEmails(AfterScenarioScope $afterScenario) : void {
       return;
     }
 
-    $exts = [
-      "text/html" => "html",
-      "text/plain" => "txt",
-    ];
-
     $spool_directory = $this->getSpoolDir();
     $emails = $this->getSpooledEmails();
     foreach ($emails as $serialized) {
       $path = $spool_directory . DIRECTORY_SEPARATOR . $serialized->getBasename($serialized->getExtension());
-
       $email = $this->getEmailContent($serialized);
-      assert($email instanceof MimeEmail);
-
-      //      foreach ($email->getChildren() as $i => $part) {
-      //        file_put_contents($path . ($exts[$part->getContentType()] ?? "{$i}.unknown"), $part->getHtmlBody());
-      //      }
 
-      // The primary (preferred) body is not considered to be a child, so we
-      // must treat it separately.
-      file_put_contents($path . "body", $email->getHtmlBody());
+      file_put_contents($path . "html", $email->getHtmlBody());
+      file_put_contents($path . "txt", $email->getTextBody());
       file_put_contents($path . "metadata", $email->getHeaders()->toString());
     }
   }
@@ -344,7 +332,6 @@ protected function findEmailsWithSubject(string $subject) : array {
     $emails = [];
     foreach ($finder as $file) {
       $email = $this->getEmailContent($file);
-      assert($email instanceof SymfonyEmail);
 
       if ($email->getSubject() === $subject) {
         $emails[] = $email;
@@ -395,13 +382,13 @@ protected function getSpoolDir() : string {
    * @param \Symfony\Component\Finder\SplFileInfo $file
    *   The .message file to get content for.
    *
-   * @return
+   * @return \Drupal\symfony_mailer\Email
    *   A deserialized email.
    */
-  protected function getEmailContent(SplFileInfo $file) {
+  protected function getEmailContent(SplFileInfo $file) : DrupalSymfonyEmail {
     assert($file->getExtension() === "message", "File passed to " . __FUNCTION__ . " must be a serialized .message file.");
     return unserialize(file_get_contents($file), ["allowed_classes" => [
-      SymfonyEmail::class,
+      DrupalSymfonyEmail::class,
       Headers::class,
       UnstructuredHeader::class,
       Address::class,