Count chars, not bytes for max title length (fixes #4366) (#4367)

* Count chars, not bytes for max title length (fixes #4366)

* fix api test

api_tests/src/post.spec.ts

@@ -76,7 +76,12 @@ test("Create a post", async () => {
     throw "Missing beta community";
   }
 
-  let postRes = await createPost(alpha, betaCommunity.community.id);
+  let postRes = await createPost(
+    alpha,
+    betaCommunity.community.id,
+    "https://example.com/",
+    "აშშ ითხოვს ირანს დაუყოვნებლივ გაანთავისუფლოს დაკავებული ნავთობის ტანკერი",
+  );
   expect(postRes.post_view.post).toBeDefined();
   expect(postRes.post_view.community.local).toBe(false);
   expect(postRes.post_view.creator.local).toBe(true);

api_tests/src/shared.ts

@@ -202,10 +202,10 @@ export async function setupLogins() {
 export async function createPost(
   api: LemmyHttp,
   community_id: number,
-  // use example.com for consistent title and embed description
   url: string = "https://example.com/",
+  // use example.com for consistent title and embed description
+  name: string = randomString(5),
 ): Promise<PostResponse> {
-  let name = randomString(5);
   let body = randomString(10);
   let form: CreatePost = {
     name,

crates/utils/src/utils/validation.rs

@@ -147,7 +147,7 @@ pub fn is_valid_matrix_id(matrix_id: &str) -> LemmyResult<()> {
 }
 
 pub fn is_valid_post_title(title: &str) -> LemmyResult<()> {
-  let length = title.trim().len();
+  let length = title.trim().chars().count();
   let check = (3..=200).contains(&length) && !has_newline(title);
   if !check {
     Err(LemmyErrorType::InvalidPostTitle.into())
@@ -380,6 +380,10 @@ mod tests {
   #[test]
   fn test_valid_post_title() {
     assert!(is_valid_post_title("Post Title").is_ok());
+    assert!(is_valid_post_title(
+      "აშშ ითხოვს ირანს დაუყოვნებლივ გაანთავისუფლოს დაკავებული ნავთობის ტანკერი"
+    )
+    .is_ok());
     assert!(is_valid_post_title("   POST TITLE 😃😃😃😃😃").is_ok());
     assert!(is_valid_post_title("\n \n \n \n    		").is_err()); // tabs/spaces/newlines
   }