diff --git a/tests/main.rs b/tests/main.rs
new file mode 100644
index 0000000..bffea09
--- /dev/null
+++ b/tests/main.rs
@@ -0,0 +1,19 @@
+/*  OpenTally: Open-source election vote counting
+ *  Copyright © 2021 Lee Yingtong Li (RunasSudo)
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU Affero General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU Affero General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Affero General Public License
+ *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+mod utils;
+mod tests_impl;
diff --git a/tests/act.rs b/tests/tests_impl/act.rs
similarity index 98%
rename from tests/act.rs
rename to tests/tests_impl/act.rs
index f2c2f8a..0b891f5 100644
--- a/tests/act.rs
+++ b/tests/tests_impl/act.rs
@@ -15,7 +15,7 @@
  *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
-mod utils;
+use crate::utils;
 
 use opentally::numbers::Rational;
 use opentally::stv;
diff --git a/tests/aec.rs b/tests/tests_impl/aec.rs
similarity index 99%
rename from tests/aec.rs
rename to tests/tests_impl/aec.rs
index 160acde..83bfffd 100644
--- a/tests/aec.rs
+++ b/tests/tests_impl/aec.rs
@@ -15,7 +15,7 @@
  *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
-mod utils;
+use crate::utils;
 
 use opentally::election::Election;
 use opentally::numbers::Rational;
diff --git a/tests/cambridge.rs b/tests/tests_impl/cambridge.rs
similarity index 98%
rename from tests/cambridge.rs
rename to tests/tests_impl/cambridge.rs
index 46dd7ca..0b321f9 100644
--- a/tests/cambridge.rs
+++ b/tests/tests_impl/cambridge.rs
@@ -15,7 +15,7 @@
  *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
-mod utils;
+use crate::utils;
 
 use opentally::numbers::Rational;
 use opentally::stv;
diff --git a/tests/cli.rs b/tests/tests_impl/cli.rs
similarity index 100%
rename from tests/cli.rs
rename to tests/tests_impl/cli.rs
diff --git a/tests/coe.rs b/tests/tests_impl/coe.rs
similarity index 98%
rename from tests/coe.rs
rename to tests/tests_impl/coe.rs
index 82ebab4..60c6542 100644
--- a/tests/coe.rs
+++ b/tests/tests_impl/coe.rs
@@ -15,7 +15,7 @@
  *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
-mod utils;
+use crate::utils;
 
 use opentally::numbers::Rational;
 use opentally::stv;
diff --git a/tests/constraints.rs b/tests/tests_impl/constraints.rs
similarity index 99%
rename from tests/constraints.rs
rename to tests/tests_impl/constraints.rs
index 7445e61..39ea9bc 100644
--- a/tests/constraints.rs
+++ b/tests/tests_impl/constraints.rs
@@ -15,7 +15,7 @@
  *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
-mod utils;
+use crate::utils;
 
 use opentally::constraints::Constraints;
 use opentally::election::{CandidateState, CountState, Election};
diff --git a/tests/convert.rs b/tests/tests_impl/convert.rs
similarity index 100%
rename from tests/convert.rs
rename to tests/tests_impl/convert.rs
diff --git a/tests/csm.rs b/tests/tests_impl/csm.rs
similarity index 98%
rename from tests/csm.rs
rename to tests/tests_impl/csm.rs
index 5575d4d..76a2c56 100644
--- a/tests/csm.rs
+++ b/tests/tests_impl/csm.rs
@@ -15,7 +15,7 @@
  *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
-mod utils;
+use crate::utils;
 
 use opentally::numbers::NativeFloat64;
 use opentally::stv;
diff --git a/tests/equal_ranks.rs b/tests/tests_impl/equal_ranks.rs
similarity index 100%
rename from tests/equal_ranks.rs
rename to tests/tests_impl/equal_ranks.rs
diff --git a/tests/ers.rs b/tests/tests_impl/ers.rs
similarity index 99%
rename from tests/ers.rs
rename to tests/tests_impl/ers.rs
index 5f5a8fd..18478c2 100644
--- a/tests/ers.rs
+++ b/tests/tests_impl/ers.rs
@@ -15,7 +15,7 @@
  *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
-mod utils;
+use crate::utils;
 
 use opentally::numbers::Rational;
 use opentally::stv;
diff --git a/tests/meek.rs b/tests/tests_impl/meek.rs
similarity index 99%
rename from tests/meek.rs
rename to tests/tests_impl/meek.rs
index 0fa5866..11df147 100644
--- a/tests/meek.rs
+++ b/tests/tests_impl/meek.rs
@@ -15,7 +15,7 @@
  *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
-mod utils;
+use crate::utils;
 
 use opentally::election::{CandidateState, CountState, Election};
 use opentally::numbers::{Fixed, NativeFloat64, Number};
diff --git a/tests/minneapolis.rs b/tests/tests_impl/minneapolis.rs
similarity index 99%
rename from tests/minneapolis.rs
rename to tests/tests_impl/minneapolis.rs
index cdf0c61..e5dcd40 100644
--- a/tests/minneapolis.rs
+++ b/tests/tests_impl/minneapolis.rs
@@ -15,7 +15,7 @@
  *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
-mod utils;
+use crate::utils;
 
 use opentally::numbers::Rational;
 use opentally::stv;
diff --git a/tests/tests_impl/mod.rs b/tests/tests_impl/mod.rs
new file mode 100644
index 0000000..edafb79
--- /dev/null
+++ b/tests/tests_impl/mod.rs
@@ -0,0 +1,32 @@
+/*  OpenTally: Open-source election vote counting
+ *  Copyright © 2021 Lee Yingtong Li (RunasSudo)
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU Affero General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU Affero General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Affero General Public License
+ *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+mod act;
+mod aec;
+mod cambridge;
+mod cli;
+mod coe;
+mod constraints;
+mod convert;
+mod csm;
+mod equal_ranks;
+mod ers;
+mod meek;
+mod minneapolis;
+mod prsa;
+mod scotland;
+mod special_cases;
diff --git a/tests/prsa.rs b/tests/tests_impl/prsa.rs
similarity index 98%
rename from tests/prsa.rs
rename to tests/tests_impl/prsa.rs
index e003044..72a2e2e 100644
--- a/tests/prsa.rs
+++ b/tests/tests_impl/prsa.rs
@@ -15,7 +15,7 @@
  *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
-mod utils;
+use crate::utils;
 
 use opentally::numbers::Rational;
 use opentally::stv;
diff --git a/tests/scotland.rs b/tests/tests_impl/scotland.rs
similarity index 100%
rename from tests/scotland.rs
rename to tests/tests_impl/scotland.rs
diff --git a/tests/special_cases.rs b/tests/tests_impl/special_cases.rs
similarity index 99%
rename from tests/special_cases.rs
rename to tests/tests_impl/special_cases.rs
index bd8c086..172f9b2 100644
--- a/tests/special_cases.rs
+++ b/tests/tests_impl/special_cases.rs
@@ -15,8 +15,6 @@
  *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
-mod utils;
-
 use opentally::election::{CandidateState, CountState, Election};
 use opentally::numbers::Rational;
 use opentally::parser::blt;