diff --git a/test/builder_db.ml b/test/builder_db.ml
index f4bbb96..1086839 100644
--- a/test/builder_db.ml
+++ b/test/builder_db.ml
@@ -5,41 +5,65 @@ module type CONN = Caqti_blocking.CONNECTION
 let () = Mirage_crypto_rng_unix.initialize ()
 
 let iter f xs = List.fold_left (fun r x -> r >>= fun () -> f x) (Ok ()) xs
-    
+let get_opt message = function
+  | Some x -> x
+  | None -> Alcotest.fail message
+
 let or_fail x =
   match x with
   | Ok x -> x
   | Error (#Caqti_error.t as e) ->
     Alcotest.failf "DB error: %a" Caqti_error.pp e
 
+module Testable = struct
+  let builder_web_auth =
+    let equal (x : _ Builder_web_auth.user_info) (y : _ Builder_web_auth.user_info) =
+      x.username = y.username &&
+      match x.password_hash, y.password_hash with
+      | `Scrypt (hash, salt, params), `Scrypt (hash', salt', params') ->
+        Cstruct.equal hash hash' &&
+        Cstruct.equal salt salt' &&
+        params = params'
+    in
+    let pp ppf { Builder_web_auth.username; password_hash } =
+      match password_hash with
+      | `Scrypt (hash, salt, { Builder_web_auth.scrypt_n; scrypt_r; scrypt_p }) ->
+        Format.fprintf ppf "user:%s;(%d,%d,%d);%a;%a" username
+          scrypt_n scrypt_r scrypt_p
+          Cstruct.hexdump_pp hash Cstruct.hexdump_pp salt
+    in
+    Alcotest.testable
+      pp
+      equal
+
+  let file =
+    let equal (x : Builder_db.Rep.file) (y : Builder_db.Rep.file) =
+      Fpath.equal x.filepath y.filepath &&
+      Fpath.equal x.localpath y.localpath &&
+      Cstruct.equal x.sha256 y.sha256 &&
+      x.size = y.size
+    in
+    let pp ppf { Builder_db.Rep.filepath; localpath; sha256; size } =
+      Format.fprintf ppf "{@[<v 1>@;<1 0>Builder_db.Rep.filepath = %a;@;<1 0>\
+                          localpath = %a;@;<1 0>\
+                          sha256 = %a;@;<1 0>\
+                          size = %d;@;<1 0>\
+                          @]@,}"
+        Fpath.pp filepath Fpath.pp localpath
+        Cstruct.hexdump_pp sha256 size
+    in
+    Alcotest.testable pp equal
+
+  let uuid = Alcotest.testable Uuidm.pp Uuidm.equal
+end
+
 let setup_db () =
-  let () = print_endline "Hello, World!" in
   Caqti_blocking.connect
     (Uri.make ~scheme:"sqlite3" ~path:":memory:" ~query:["create", ["true"]] ())
   >>= fun ((module Db) as conn) ->
   iter (fun migrate -> Db.exec migrate ()) Builder_db.migrate >>= fun () ->
   Ok conn
 
-let builder_web_auth =
-  let equal (x : _ Builder_web_auth.user_info) (y : _ Builder_web_auth.user_info) =
-    x.username = y.username &&
-    match x.password_hash, y.password_hash with
-    | `Scrypt (hash, salt, params), `Scrypt (hash', salt', params') ->
-      Cstruct.equal hash hash' &&
-      Cstruct.equal salt salt' &&
-      params = params'
-  in
-  let pp ppf { Builder_web_auth.username; password_hash } =
-    match password_hash with
-    | `Scrypt (hash, salt, { Builder_web_auth.scrypt_n; scrypt_r; scrypt_p }) ->
-      Format.fprintf ppf "user:%s;(%d,%d,%d);%a;%a" username
-        scrypt_n scrypt_r scrypt_p
-        Cstruct.hexdump_pp hash Cstruct.hexdump_pp salt
-  in
-  Alcotest.testable
-    pp
-    equal
-
 let scrypt_params = Builder_web_auth.scrypt_params
     ~scrypt_n:1024 ~scrypt_r:1 ()
 let username = "test" and password = "testtest"
@@ -62,13 +86,13 @@ let test_user_get_all (module Db : CONN) =
 let test_user_get_user (module Db : CONN) =
   Db.find_opt Builder_db.User.get_user username >>| fun res ->
   let auth_opt = Option.map snd res in
-  Alcotest.(check (option builder_web_auth)) "test user" auth_opt (Some auth)
+  Alcotest.(check (option Testable.builder_web_auth)) "test user" auth_opt (Some auth)
 
 let test_user_remove_user (module Db : CONN) =
   Db.exec Builder_db.User.remove_user username >>= fun () ->
   Db.find_opt Builder_db.User.get_user username >>| fun res ->
   let auth_opt = Option.map snd res in
-  Alcotest.(check (option builder_web_auth)) "remove user" auth_opt None
+  Alcotest.(check (option Testable.builder_web_auth)) "remove user" auth_opt None
 
 let test_user_update (module Db : CONN) =
   let auth' = Builder_web_auth.hash ~scrypt_params ~username
@@ -76,7 +100,7 @@ let test_user_update (module Db : CONN) =
   Db.exec Builder_db.User.update_user auth' >>= fun () ->
   Db.find_opt Builder_db.User.get_user username >>| fun res ->
   let auth_opt = Option.map snd res in
-  Alcotest.(check (option builder_web_auth)) "update user" auth_opt (Some auth')
+  Alcotest.(check (option Testable.builder_web_auth)) "update user" auth_opt (Some auth')
 
 let test_user_remove (module Db : CONN) =
   Db.find_opt Builder_db.User.get_user username >>= function
@@ -86,7 +110,7 @@ let test_user_remove (module Db : CONN) =
     Db.exec Builder_db.User.remove id >>= fun () ->
     Db.find_opt Builder_db.User.get_user username >>| fun res ->
     let auth_opt = Option.map snd res in
-    Alcotest.(check (option builder_web_auth)) "remove user" auth_opt None
+    Alcotest.(check (option Testable.builder_web_auth)) "remove user" auth_opt None
 
 let test_user_auth (module Db : CONN) =
   Db.find_opt Builder_db.User.get_user username >>| function
@@ -104,6 +128,144 @@ let test_user_unauth (module Db : CONN) =
     Alcotest.(check bool) "unauthorized"
       (Builder_web_auth.verify_password "wrong" auth') false
 
+let job_name = "test-job"
+let script = {|#!/bin/sh
+  echo '#!/bin/sh' > bin/hello.sh
+  echo 'echo Hello, World!' > bin/hello.sh
+  |}
+let uuid = Uuidm.create `V4
+let console = [(0, "Hello, World!")]
+let start = Option.get (Ptime.of_float_s 0.)
+let finish = Option.get (Ptime.of_float_s 1.)
+let result = Builder.Exited 0
+let main_binary =
+  let filepath = Result.get_ok (Fpath.of_string "bin/hello.sh") in
+  let localpath = Result.get_ok (Fpath.of_string "/dev/null") in
+  let data = "#!/bin/sh\necho Hello, World\n" in
+  let sha256 = Mirage_crypto.Hash.SHA256.digest (Cstruct.of_string data) in
+  let size = String.length data in
+  { Builder_db.Rep.filepath; localpath; sha256; size }
+
+let add_test_build (module Db : CONN) =
+  let r =
+    let open Builder_db in
+    Db.start () >>= fun () ->
+    Db.exec Job.try_add job_name >>= fun () ->
+    Db.find Job.get_id_by_name job_name >>= fun job_id ->
+    Db.exec Build.add { Build.uuid; start; finish; result; console; script;
+                        main_binary = Some main_binary.filepath;
+                        job_id } >>= fun () ->
+    Db.find last_insert_rowid () >>= fun id ->
+    Db.exec Build_artifact.add (main_binary, id) >>= fun () ->
+    Db.commit ()
+  in
+  Rresult.R.kignore_error
+    ~use:(fun _ -> Db.rollback ())
+    r
+
+let with_build_db f () =
+  or_fail
+    (setup_db () >>= fun conn ->
+     add_test_build conn >>= fun () ->
+     f conn)
+
+let test_job_get_all (module Db : CONN) =
+  Db.collect_list Builder_db.Job.get_all () >>| fun jobs ->
+  Alcotest.(check int) "one job" (List.length jobs) 1
+
+let test_job_get_id_by_name (module Db : CONN) =
+  Db.find Builder_db.Job.get_id_by_name job_name >>| fun _id ->
+  ()
+
+let test_job_get (module Db : CONN) =
+  Db.find Builder_db.Job.get_id_by_name job_name >>= fun job_id ->
+  Db.find_opt Builder_db.Job.get job_id >>| fun job_name' ->
+  Alcotest.(check (option string)) "job equal" job_name' (Some job_name)
+
+let test_job_remove () =
+  let r =
+    setup_db () >>= fun (module Db : CONN) ->
+    Db.exec Builder_db.Job.try_add "test-job" >>= fun () ->
+    Db.find Builder_db.Job.get_id_by_name "test-job" >>= fun id ->
+    Db.exec Builder_db.Job.remove id >>= fun () ->
+    Db.collect_list Builder_db.Job.get_all () >>| fun jobs ->
+    Alcotest.(check int) "no jobs" (List.length jobs) 0
+  in
+  or_fail r
+
+let test_build_get_by_uuid (module Db : CONN) =
+  Db.find_opt Builder_db.Build.get_by_uuid uuid
+  >>| get_opt "no build" >>| fun (_id, build) ->
+  Alcotest.(check Testable.uuid) "same uuid" build.uuid uuid
+
+let test_build_get_all (module Db : CONN) =
+  Db.find Builder_db.Job.get_id_by_name job_name >>= fun job_id ->
+  Db.collect_list Builder_db.Build.get_all job_id >>| fun builds ->
+  Alcotest.(check int) "one build" (List.length builds) 1
+
+let test_build_get_all_meta (module Db : CONN) =
+  Db.find Builder_db.Job.get_id_by_name job_name >>= fun job_id ->
+  Db.collect_list Builder_db.Build.get_all_meta job_id >>| fun builds ->
+  Alcotest.(check int) "one build" (List.length builds) 1
+
+let uuid' = Uuidm.create `V4
+let start' = Option.get (Ptime.of_float_s 3600.)
+let finish' = Option.get (Ptime.of_float_s 3601.)
+
+let add_second_build (module Db : CONN) =
+  let uuid = uuid' and start = start' and finish = finish' in
+  let open Builder_db in
+  Db.start () >>= fun () ->
+  Db.find Job.get_id_by_name job_name >>= fun job_id ->
+  Db.exec Build.add { Build.uuid; start; finish; result; console; script;
+                      main_binary = Some main_binary.filepath; job_id;
+                    } >>= fun () ->
+  Db.find last_insert_rowid () >>= fun id ->
+  Db.exec Build_artifact.add (main_binary, id) >>= fun () ->
+  Db.commit ()
+
+let test_build_get_latest (module Db : CONN) =
+  add_second_build (module Db) >>= fun () ->
+  (* Test *)
+  Db.find Builder_db.Job.get_id_by_name job_name >>= fun job_id ->
+  Db.find_opt Builder_db.Build.get_latest job_id
+  >>| get_opt "no latest build" >>| fun (_id, meta, main_binary') ->
+  Alcotest.(check (option Testable.file)) "same main binary" main_binary' (Some main_binary);
+  Alcotest.(check Testable.uuid) "same uuid" meta.uuid uuid'
+
+let test_build_get_by_hash (module Db : CONN) =
+  add_second_build (module Db) >>= fun () ->
+  Db.find_opt Builder_db.Build.get_by_hash main_binary.sha256
+  >>| get_opt "no build" >>| fun (job_name', build) ->
+  Alcotest.(check string) "same job" job_name' job_name;
+  Alcotest.(check Testable.uuid) "same uuid" build.uuid uuid'
+
+let test_artifact_get_all_by_build (module Db : CONN) =
+  Db.find_opt Builder_db.Build.get_by_uuid uuid >>|
+  get_opt "no build" >>= fun (id, _build) ->
+  Db.collect_list Builder_db.Build_artifact.get_all_by_build id >>| fun build_artifacts ->
+  Alcotest.(check int) "one build artifact" (List.length build_artifacts) 1
+
+let test_artifact_get_by_build_uuid (module Db : CONN) =
+  Db.find_opt Builder_db.Build_artifact.get_by_build_uuid
+    (uuid, main_binary.Builder_db.Rep.filepath) >>|
+  get_opt "no build" >>| fun (_id, file) ->
+  Alcotest.(check Testable.file) "same file" file main_binary
+
+let test_artifact_get_by_build (module Db : CONN) =
+  Db.find_opt Builder_db.Build.get_by_uuid uuid >>|
+  get_opt "no build" >>= fun (id, _build) ->
+  Db.find Builder_db.Build_artifact.get_by_build
+    (id, main_binary.filepath)>>| fun (_id, file) ->
+  Alcotest.(check Testable.file) "same file" file main_binary
+
+(* XXX: This test should fail because main_binary on the corresponding build
+ * references its main_binary. This is not the case now due to foreign key. *)
+let test_artifact_remove_by_build (module Db : CONN) =
+  Db.find_opt Builder_db.Build.get_by_uuid uuid >>|
+  get_opt "no build" >>= fun (id, _build) ->
+  Db.exec Builder_db.Build_artifact.remove_by_build id
+
 let () =
   let open Alcotest in
   Alcotest.run "Builder_db" [
@@ -118,4 +280,24 @@ let () =
       test_case "User auth success" `Quick (with_user_db test_user_auth);
       test_case "User auth fail" `Quick (with_user_db test_user_unauth);
     ];
+    "job", [
+      test_case "Add build" `Quick (with_build_db (fun _ -> Ok ()));
+      test_case "One job" `Quick (with_build_db test_job_get_all);
+      test_case "Get job id" `Quick (with_build_db test_job_get_id_by_name);
+      test_case "Get job" `Quick (with_build_db test_job_get);
+      test_case "Remove job" `Quick test_job_remove;
+    ];
+    "build", [
+      test_case "Get build" `Quick (with_build_db test_build_get_by_uuid);
+      test_case "One build" `Quick (with_build_db test_build_get_all);
+      test_case "One build (meta data)" `Quick (with_build_db test_build_get_all_meta);
+      test_case "Get latest build" `Quick (with_build_db test_build_get_latest);
+      test_case "Get build by hash" `Quick (with_build_db test_build_get_by_hash);
+    ];
+    "build-artifact", [
+      test_case "Get all by build" `Quick (with_build_db test_artifact_get_all_by_build);
+      test_case "Get by build uuid" `Quick (with_build_db test_artifact_get_by_build_uuid);
+      test_case "Get by build" `Quick (with_build_db test_artifact_get_by_build);
+      test_case "Remove by build" `Quick (with_build_db test_artifact_remove_by_build);
+    ];
   ]