diff --git a/Cargo.lock b/Cargo.lock
index 65a24ba..1501ab8 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -857,6 +857,7 @@ dependencies = [
  "serde_derive",
  "serde_json",
  "structopt",
+ "tempfile",
  "vergen",
 ]
 
diff --git a/Cargo.toml b/Cargo.toml
index cbcc898..7d50dbd 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -26,3 +26,6 @@ actix-rt = "1.1.1"
 [build-dependencies]
 ructe = "0.11.4"
 vergen = "3.1.0"
+
+[dev-dependencies]
+tempfile = "3.1.0"
diff --git a/src/tests.rs b/src/tests.rs
new file mode 100644
index 0000000..eeef7b0
--- /dev/null
+++ b/src/tests.rs
@@ -0,0 +1,66 @@
+use crate::{
+    calculate_hoc, index, json_hoc,
+    service::{Bitbucket, GitHub, Gitlab, Service},
+    State,
+};
+
+use actix_web::{http, test, web, App};
+use tempfile::tempdir;
+
+macro_rules! test_app {
+    ($path: expr) => {
+        test::init_service(App::new().service($path)).await
+    };
+    ($state: expr, $path: expr) => {
+        test::init_service(App::new().data($state).service($path)).await
+    };
+}
+
+macro_rules! test_service {
+    ($name: ident, $path: tt, $what: ident) => {
+        async fn $name<T: 'static + Service>(req_path: &str) {
+            let repo_dir = dbg!(tempdir().unwrap());
+            let cache_dir = dbg!(tempdir().unwrap());
+            let repos = format!("{}/", repo_dir.path().display());
+            let cache = format!("{}/", cache_dir.path().display());
+            let state = dbg!(State { repos, cache });
+
+            let mut app = test_app!(state, web::resource($path).to($what::<T>));
+
+            let req = dbg!(test::TestRequest::with_uri(req_path).to_request());
+            let resp = dbg!(test::call_service(&mut app, req).await);
+
+            assert_eq!(resp.status(), http::StatusCode::OK);
+        }
+    };
+}
+
+#[actix_rt::test]
+async fn test_index() {
+    let mut app = test::init_service(App::new().service(index)).await;
+
+    let req = dbg!(test::TestRequest::with_uri("/").to_request());
+    let resp = dbg!(test::call_service(&mut app, req).await);
+
+    assert_eq!(resp.status(), http::StatusCode::OK);
+}
+
+// TODO: fix this test
+// #[actix_rt::test]
+async fn test_json() {
+    test_service!(test_json_service, "/service/{user}/{repo}/json", json_hoc);
+
+    test_json_service::<Gitlab>("/service/vbrandl/hoc/json").await;
+    test_json_service::<GitHub>("/service/vbrandl/hoc/json").await;
+    test_json_service::<Bitbucket>("/service/vbrandl/hoc/json").await;
+}
+
+// TODO: fix this test
+// #[actix_rt::test]
+async fn test_badge() {
+    test_service!(test_badge_service, "/service/{user}/{repo}", calculate_hoc);
+
+    test_badge_service::<Gitlab>("/service/vbrandl/hoc").await;
+    test_badge_service::<GitHub>("/service/vbrandl/hoc").await;
+    test_badge_service::<Bitbucket>("/service/vbrandl/hoc").await;
+}