diff --git a/day00/main.rs b/day00/main.rs
index d2d2eaf..26a67e8 100644
--- a/day00/main.rs
+++ b/day00/main.rs
@@ -1,3 +1,53 @@
-const INPUT: &str = include_str!("./input.txt");
+pub const INPUT: &str = include_str!("./input.txt");
 
-pub fn main() {}
+type Input = &'static str;
+type Output = usize;
+
+fn parse_input(input: &'static str) -> Input {
+    input
+}
+
+pub fn main() {
+    let input = parse_input(INPUT);
+    println!("Part 1: {}", part_1(&input));
+    println!("Part 2: {}", part_2(&input));
+}
+
+fn part_1(input: &Input) -> Output {
+    Output::default()
+}
+
+fn part_2(input: &Input) -> Output {
+    Output::default()
+}
+
+#[cfg(test)]
+mod tests {
+    use super::{parse_input, Output};
+
+    const SAMPLE_INPUT: &str = r#""#;
+
+    #[test]
+    fn test_part_1_with_sample_solution() {
+        let input = parse_input(SAMPLE_INPUT);
+        assert_eq!(super::part_1(&input), Output::default());
+    }
+
+    #[test]
+    fn test_part_1_with_solution() {
+        let input = parse_input(super::INPUT);
+        assert_eq!(super::part_1(&input), Output::default());
+    }
+
+    #[test]
+    fn test_part_2_with_sample_solution() {
+        let input = parse_input(SAMPLE_INPUT);
+        assert_eq!(super::part_2(&input), Output::default());
+    }
+
+    #[test]
+    fn test_part_2_with_solution() {
+        let input = parse_input(super::INPUT);
+        assert_eq!(super::part_2(&input), Output::default());
+    }
+}