refactored project structure

src/day03/mod.rs

@@ -0,0 +1,22 @@
+pub mod part03a;
+pub mod part03b;
+
+#[cfg(test)]
+mod tests {
+    use crate::day03::{part03a, part03b};
+
+    const PUZZLE: &str = "987654321111111
+811111111111119
+234234234234278
+818181911112111";
+
+    #[test]
+    fn part03a() {
+        assert_eq!(part03a::solve(PUZZLE.to_string()), 357);
+    }
+
+    #[test]
+    fn part03b() {
+        assert_eq!(part03b::solve(PUZZLE.to_string()), 3121910778619);
+    }
+}