diff --git a/2020/src/day01.rs b/2020/src/day01.rs
index 3f14adc..37377af 100644
--- a/2020/src/day01.rs
+++ b/2020/src/day01.rs
@@ -47,21 +47,19 @@ impl Solution for Day01 {
 
 #[cfg(test)]
 mod tests {
+    use crate::test_implementation;
+
     use super::*;
 
     const SAMPLE: &[u8] = include_bytes!("../samples/01.txt");
 
     #[test]
     fn sample_part1() {
-        let mut day = Day01::default();
-        let result = day.part1(&mut SAMPLE.as_ref());
-        assert_eq!("514579", &result);
+        test_implementation!(Day01, 1, SAMPLE, 514579);
     }
 
     #[test]
     fn sample_part2() {
-        let mut day = Day01::default();
-        let result = day.part2(&mut SAMPLE.as_ref());
-        assert_eq!("241861950", &result);
+        test_implementation!(Day01, 2, SAMPLE, 241861950);
     }
 }
diff --git a/2020/src/day02.rs b/2020/src/day02.rs
index 6a167f0..2db8d39 100644
--- a/2020/src/day02.rs
+++ b/2020/src/day02.rs
@@ -67,23 +67,19 @@ impl Solution for Day02 {
 
 #[cfg(test)]
 mod tests {
+    use crate::test_implementation;
+
     use super::*;
 
     const SAMPLE: &[u8] = include_bytes!("../samples/02.txt");
 
     #[test]
     fn sample_part1() {
-        let mut implementation = Day02;
-
-        let result = implementation.part1(&mut SAMPLE.as_ref());
-        assert_eq!("2", &result);
+        test_implementation!(Day02, 1, SAMPLE, 2);
     }
 
     #[test]
     fn sample_part2() {
-        let mut implementation = Day02;
-
-        let result = implementation.part2(&mut SAMPLE.as_ref());
-        assert_eq!("1", &result);
+        test_implementation!(Day02, 2, SAMPLE, 1);
     }
 }
diff --git a/2020/src/lib.rs b/2020/src/lib.rs
index 1a5969a..9d642fc 100644
--- a/2020/src/lib.rs
+++ b/2020/src/lib.rs
@@ -19,3 +19,20 @@ pub fn get_implementation(day: usize) -> Box<dyn Solution> {
         _ => panic!("Unsupported day {}", day),
     }
 }
+
+#[macro_export]
+macro_rules! test_implementation {
+    ($impl:ident, 1, $source:ident, $output:expr) => {
+        let mut implementation = $impl::default();
+
+        let result = implementation.part1(&mut $source.as_ref());
+        assert_eq!($output.to_string(), result);
+    };
+
+    ($impl:ident, 2, $source:ident, $output:expr) => {
+        let mut implementation = $impl::default();
+
+        let result = implementation.part2(&mut $source.as_ref());
+        assert_eq!($output.to_string(), result);
+    };
+}