add test for single eml file with attachment

packages/node-mimimi/src/importer.rs

@@ -589,7 +589,7 @@ mod tests {
 	}
 
 	#[tokio::test]
-	async fn can_import_single_eml_file() {
+	async fn can_import_single_eml_file_without_attachment() {
 		let mut importer = init_file_importer(vec!["./test/sample.eml".to_string()]).await;
 
 		let import_res = importer.continue_import().await.map_err(|_| ());
@@ -601,4 +601,18 @@ mod tests {
 			import_res
 		);
 	}
+
+	#[tokio::test]
+	async fn can_import_single_eml_file_with_attachment() {
+		let mut importer = init_file_importer(vec!["./test/attachment_sample.eml".to_string()]).await;
+
+		let import_res = importer.continue_import().await.map_err(|_| ());
+		assert_eq!(
+			Ok(ImportStatus {
+				state: ImportState::Finished,
+				imported_mails: 1,
+			}),
+			import_res
+		);
+	}
 }

packages/node-mimimi/test/attachment_sample.eml

@@ -0,0 +1,22 @@
+From: Art Vandelay <art@vandelay.com> (Vandelay Industries)
+To: "Colleagues": "James Smythe" <james@vandelay.com>; Friends:
+   jane@example.com, =?UTF-8?Q?John_Sm=C3=AEth?= <john@example.com>;
+Date: Sat, 20 Nov 2021 14:22:01 -0800
+Subject: Why not both importing AND exporting? =?utf-8?b?4pi6?=
+Content-Type: multipart/mixed; boundary="festivus";
+
+--festivus
+Content-Type: text/html; charset="us-ascii"
+Content-Transfer-Encoding: base64
+
+PGh0bWw+PHA+SSB3YXMgdGhpbmtpbmcgYWJvdXQgcXVpdHRpbmcgdGhlICZsZHF1bztle
+HBvcnRpbmcmcmRxdW87IHRvIGZvY3VzIGp1c3Qgb24gdGhlICZsZHF1bztpbXBvcnRpbm
+cmcmRxdW87LDwvcD48cD5idXQgdGhlbiBJIHRob3VnaHQsIHdoeSBub3QgZG8gYm90aD8
+gJiN4MjYzQTs8L3A+PC9odG1sPg==
+--festivus
+Content-Type: image/gif; name="TestFile.gif";
+Content-Transfer-Encoding: Base64
+Content-Disposition: attachment
+
+R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7
+--festivus--