diff --git a/backend/src/main.rs b/backend/src/main.rs
index 6b202ba..5cf0ca9 100644
--- a/backend/src/main.rs
+++ b/backend/src/main.rs
@@ -16,6 +16,9 @@ mod error;
 mod service;
 mod statics;
 
+#[cfg(test)]
+mod test;
+
 use crate::{
     cdn::Cloudflare,
     data::{FilePath, State},
diff --git a/backend/src/test/bitbucket.rs b/backend/src/test/bitbucket.rs
new file mode 100644
index 0000000..c8da5a0
--- /dev/null
+++ b/backend/src/test/bitbucket.rs
@@ -0,0 +1,70 @@
+use crate::{data::State, proxy_file, redirect, service::Bitbucket, REDIRECT_AGE};
+use actix_web::{dev::Service, http::StatusCode, middleware, test, web, App};
+use awc::Client;
+use std::sync::{Arc, RwLock};
+use time_cache::Cache;
+
+#[test]
+fn requesting_branch_redirects() {
+    let state: State = Arc::new(RwLock::new(Cache::new(REDIRECT_AGE)));
+    let mut app = test::init_service(
+        App::new()
+        .data(Client::new())
+        .data(state)
+        .wrap(middleware::NormalizePath)
+        .route(
+            "/bitbucket/{user}/{repo}/{commit}/{file:.*}",
+            web::get().to_async(redirect::<Bitbucket>),
+            ),
+            );
+
+    let req = test::TestRequest::with_uri("/bitbucket/vbrandl/vbrandl.net/master/README.md")
+        .to_request();
+    let resp = test::block_fn(|| app.call(req)).unwrap();
+
+    assert_eq!(StatusCode::SEE_OTHER, resp.status());
+}
+
+#[test]
+fn invalid_file_404() {
+    let state: State = Arc::new(RwLock::new(Cache::new(REDIRECT_AGE)));
+    let mut app = test::init_service(
+        App::new()
+        .data(Client::new())
+        .data(state)
+        .wrap(middleware::NormalizePath)
+        .route(
+            "/bitbucket/{user}/{repo}/{commit:[0-9a-fA-F]{40}}/{file:.*}",
+            web::get().to_async(proxy_file::<Bitbucket>),
+            ),
+            );
+
+    let req =
+        test::TestRequest::with_uri("/bitbucket/vbrandl/vbrandl.net/369c392927a6d75f16c5dc38e2577276b94676bd/README.md.invalid")
+        .to_request();
+    let resp = test::block_fn(|| app.call(req)).unwrap();
+
+    assert_eq!(StatusCode::NOT_FOUND, resp.status());
+}
+
+#[test]
+fn valid_file_200() {
+    let state: State = Arc::new(RwLock::new(Cache::new(REDIRECT_AGE)));
+    let mut app = test::init_service(
+        App::new()
+        .data(Client::new())
+        .data(state)
+        .wrap(middleware::NormalizePath)
+        .route(
+            "/bitbucket/{user}/{repo}/{commit:[0-9a-fA-F]{40}}/{file:.*}",
+            web::get().to_async(proxy_file::<Bitbucket>),
+            ),
+            );
+
+    let req =
+        test::TestRequest::with_uri("/bitbucket/vbrandl/vbrandl.net/369c392927a6d75f16c5dc38e2577276b94676bd/README.md")
+        .to_request();
+    let resp = test::block_fn(|| app.call(req)).unwrap();
+
+    assert_eq!(StatusCode::OK, resp.status());
+}
diff --git a/backend/src/test/github.rs b/backend/src/test/github.rs
new file mode 100644
index 0000000..bcf6382
--- /dev/null
+++ b/backend/src/test/github.rs
@@ -0,0 +1,71 @@
+use crate::{data::State, proxy_file, redirect, service::Github, REDIRECT_AGE};
+use actix_web::{dev::Service, http::StatusCode, middleware, test, web, App};
+use awc::Client;
+use std::sync::{Arc, RwLock};
+use time_cache::Cache;
+
+#[test]
+fn requesting_branch_redirects() {
+    let state: State = Arc::new(RwLock::new(Cache::new(REDIRECT_AGE)));
+    let mut app = test::init_service(
+        App::new()
+            .data(Client::new())
+            .data(state)
+            .wrap(middleware::NormalizePath)
+            .route(
+                "/github/{user}/{repo}/{commit}/{file:.*}",
+                web::get().to_async(redirect::<Github>),
+            ),
+    );
+
+    let req = test::TestRequest::with_uri("/github/vbrandl/yagcdn/master/Cargo.toml").to_request();
+    let resp = test::block_fn(|| app.call(req)).unwrap();
+
+    assert_eq!(StatusCode::SEE_OTHER, resp.status());
+}
+
+#[test]
+fn invalid_file_404() {
+    let state: State = Arc::new(RwLock::new(Cache::new(REDIRECT_AGE)));
+    let mut app = test::init_service(
+        App::new()
+            .data(Client::new())
+            .data(state)
+            .wrap(middleware::NormalizePath)
+            .route(
+                "/github/{user}/{repo}/{commit:[0-9a-fA-F]{40}}/{file:.*}",
+                web::get().to_async(proxy_file::<Github>),
+            ),
+    );
+    // github
+    let req = test::TestRequest::with_uri(
+        "/github/vbrandl/yagcdn/f1b35e7c05b952be6de559051d7daad2ecf05369/Cargo.toml.invalid",
+    )
+    .to_request();
+    let resp = test::block_fn(|| app.call(req)).unwrap();
+
+    assert_eq!(StatusCode::NOT_FOUND, resp.status());
+}
+
+#[test]
+fn valid_file_200() {
+    let state: State = Arc::new(RwLock::new(Cache::new(REDIRECT_AGE)));
+    let mut app = test::init_service(
+        App::new()
+            .data(Client::new())
+            .data(state)
+            .wrap(middleware::NormalizePath)
+            .route(
+                "/github/{user}/{repo}/{commit:[0-9a-fA-F]{40}}/{file:.*}",
+                web::get().to_async(proxy_file::<Github>),
+            ),
+    );
+    // github
+    let req = test::TestRequest::with_uri(
+        "/github/vbrandl/yagcdn/f1b35e7c05b952be6de559051d7daad2ecf05369/backend/Cargo.toml",
+    )
+    .to_request();
+    let resp = test::block_fn(|| app.call(req)).unwrap();
+
+    assert_eq!(StatusCode::OK, resp.status());
+}
diff --git a/backend/src/test/gitlab.rs b/backend/src/test/gitlab.rs
new file mode 100644
index 0000000..a5a53d0
--- /dev/null
+++ b/backend/src/test/gitlab.rs
@@ -0,0 +1,71 @@
+use crate::{data::State, proxy_file, redirect, service::GitLab, REDIRECT_AGE};
+use actix_web::{dev::Service, http::StatusCode, middleware, test, web, App};
+use awc::Client;
+use std::sync::{Arc, RwLock};
+use time_cache::Cache;
+
+#[test]
+fn requesting_branch_redirects() {
+    let state: State = Arc::new(RwLock::new(Cache::new(REDIRECT_AGE)));
+    let mut app = test::init_service(
+        App::new()
+        .data(Client::new())
+        .data(state)
+        .wrap(middleware::NormalizePath)
+        .route(
+            "/gitlab/{user}/{repo}/{commit}/{file:.*}",
+            web::get().to_async(redirect::<GitLab>),
+            ),
+            );
+
+    let req = test::TestRequest::with_uri("/gitlab/vbrandl/hoc/master/Cargo.toml").to_request();
+    let resp = test::block_fn(|| app.call(req)).unwrap();
+
+    assert_eq!(StatusCode::SEE_OTHER, resp.status());
+}
+
+#[test]
+fn invalid_file_404() {
+    let state: State = Arc::new(RwLock::new(Cache::new(REDIRECT_AGE)));
+    let mut app = test::init_service(
+        App::new()
+        .data(Client::new())
+        .data(state)
+        .wrap(middleware::NormalizePath)
+        .route(
+            "/gitlab/{user}/{repo}/{commit:[0-9a-fA-F]{40}}/{file:.*}",
+            web::get().to_async(proxy_file::<GitLab>),
+            ),
+            );
+
+    let req = test::TestRequest::with_uri(
+        "/gitlab/vbrandl/hoc/1223d429db877e46653260b15aa2bbd326bcd495/Cargo.toml.invalid",
+        )
+        .to_request();
+    let resp = test::block_fn(|| app.call(req)).unwrap();
+
+    assert_eq!(StatusCode::NOT_FOUND, resp.status());
+}
+
+#[test]
+fn valid_file_200() {
+    let state: State = Arc::new(RwLock::new(Cache::new(REDIRECT_AGE)));
+    let mut app = test::init_service(
+        App::new()
+        .data(Client::new())
+        .data(state)
+        .wrap(middleware::NormalizePath)
+        .route(
+            "/gitlab/{user}/{repo}/{commit:[0-9a-fA-F]{40}}/{file:.*}",
+            web::get().to_async(proxy_file::<GitLab>),
+            ),
+            );
+
+    let req = test::TestRequest::with_uri(
+        "/gitlab/vbrandl/hoc/1223d429db877e46653260b15aa2bbd326bcd495/Cargo.toml",
+        )
+        .to_request();
+    let resp = test::block_fn(|| app.call(req)).unwrap();
+
+    assert_eq!(StatusCode::OK, resp.status());
+}
diff --git a/backend/src/test/mod.rs b/backend/src/test/mod.rs
new file mode 100644
index 0000000..37005aa
--- /dev/null
+++ b/backend/src/test/mod.rs
@@ -0,0 +1,3 @@
+mod bitbucket;
+mod github;
+mod gitlab;