Put tests in sub module for template.

2021/src/template.rs

@@ -21,22 +21,27 @@ fn part2(depths: &[u32]) -> Result<u32> {
 }
 */
 
-#[test]
+#[cfg(test)]
-fn test_part1() -> Result<()> {
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_part1() -> Result<()> {
         let input = r#"
 "#
         .trim();
         assert_eq!(part1(&parse(input)?)?, TODO);
         Ok(())
-}
+    }
 
-/*
+    /*
-#[test]
+    #[test]
-fn test_part2()->Result<()> {
+    fn test_part2()->Result<()> {
         let input = r#"
-"#
+    "#
         .trim();
         assert_eq!(part2(&parse(input)?)?, TODO);
-Ok(())
+    Ok(())
+    }
+    */
 }
-*/