Allow fetching from local url, at fetch redirect test (fixes #4526)

Cargo.lock

@@ -17,8 +17,7 @@ checksum = "8f27d075294830fcab6f66e320dab524bc6d048f4a151698e153205559113772"
 [[package]]
 name = "activitypub_federation"
 version = "0.5.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a028034c642d3ed16b535f98f48b3df30397833c183d68852d79de16650d5ed5"
+source = "git+https://github.com/LemmyNet/activitypub-federation-rust.git?branch=follow-local-redirect#2cd31014b34ca7b0c27c7a921669af0e5511059b"
 dependencies = [
  "activitystreams-kinds",
  "actix-web",

Cargo.toml

@@ -99,7 +99,7 @@ lemmy_db_views = { version = "=0.19.4-beta.2", path = "./crates/db_views" }
 lemmy_db_views_actor = { version = "=0.19.4-beta.2", path = "./crates/db_views_actor" }
 lemmy_db_views_moderator = { version = "=0.19.4-beta.2", path = "./crates/db_views_moderator" }
 lemmy_federate = { version = "=0.19.4-beta.2", path = "./crates/federate" }
-activitypub_federation = { version = "0.5.2", default-features = false, features = [
+activitypub_federation = { git = "https://github.com/LemmyNet/activitypub-federation-rust.git", branch = "follow-local-redirect", default-features = false, features = [
   "actix-web",
 ] }
 diesel = "2.1.4"

api_tests/src/post.spec.ts

@@ -745,3 +745,26 @@ test("Block post that contains banned URL", async () => {
   editSiteForm.blocked_urls = [];
   await epsilon.editSite(editSiteForm);
 });
+
+test("Fetch post with redirect", async () => {
+  let alphaPost = await createPost(
+    alpha,
+    betaCommunity!.community.id,
+  );
+  expect(alphaPost.post_view.post).toBeDefined();
+
+  // beta fetches from alpha as usual
+  let betaPost = await resolvePost(beta, alphaPost.post_view.post);
+  expect(betaPost.post).toBeDefined();
+
+  // gamma fetches from beta, and gets redirected to alpha
+  let gammaPost = await resolvePost(gamma, betaPost.post!.post);
+  expect(gammaPost.post).toBeDefined();
+
+  // fetch remote object from local url, which redirects to the original url
+  let form: ResolveObject = {
+    q: `http://lemmy-gamma:8561/post/${gammaPost.post!.post.id}`
+  };
+  let gammaPost2 = await gamma.resolveObject(form);
+  expect(gammaPost2.post).toBeDefined();
+});