improvements

src/tests/api_files.rs

@@ -0,0 +1,50 @@
+/*
+ * Copyright (C) 2026 Mateusz Gruszczyński @linuxiarz.pl
+ * Source-Available Code / Dual-Licensed.
+ *
+ * Free for non-commercial and evaluation use under terms of BSL/GPLv3.
+ * Commercial or production use requires a valid paid license.
+ * See LICENSE file in repository root for details.
+ */
+
+use super::{content_references_file, content_references_stored_file, is_safe_inline_image_mime};
+
+#[test]
+fn only_raster_images_are_inline() {
+    assert!(is_safe_inline_image_mime("image/png"));
+    assert!(is_safe_inline_image_mime("image/jpeg"));
+    assert!(!is_safe_inline_image_mime("image/svg+xml"));
+    assert!(!is_safe_inline_image_mime("text/html"));
+    assert!(!is_safe_inline_image_mime("application/xml"));
+}
+
+#[test]
+fn extended_image_alias_is_still_attached() {
+    assert!(content_references_file(
+        "[image=photo.jpg,Photo,a=left,size=640x400]",
+        "photo.jpg",
+        "/f/token/photo.jpg",
+    ));
+    assert!(content_references_file(
+        "[file=report.pdf,Quarterly report]",
+        "report.pdf",
+        "/f/token/report.pdf",
+    ));
+}
+
+#[test]
+fn attachment_references_survive_origin_changes() {
+    let stored = "/f/token/image.png";
+    assert!(content_references_stored_file(
+        "![diagram](https://old-files.example.com/f/token/image.png)",
+        "image.png",
+        stored,
+        None,
+    ));
+    assert!(content_references_stored_file(
+        "![diagram](/f/token/image.png)",
+        "image.png",
+        "https://old-files.example.com/f/token/image.png",
+        Some("https://new-files.example.com"),
+    ));
+}