Multi-line output

aoc/src/run.rs

@@ -66,17 +66,20 @@ where
                 if main_only && version.is_some() {
                     continue;
                 }
+                let results_start = results.chars().count();
                 write!(&mut results, "Day {day} - part {part}")?;
                 if let Some(version) = version {
                     write!(&mut results, " — {version}")?;
                 }
                 let before = chrono::Utc::now();
                 let result = runner()?;
                 let after = chrono::Utc::now();
-                write!(&mut results, ": {result}")?;
                 if timings {
                     write!(&mut results, " ({})", pretty_duration(after - before))?;
                 }
+                write!(&mut results, ": ")?;
+                let sep = format!("\n{}", " ".repeat(results.chars().count() - results_start));
+                write!(&mut results, "{}", result.trim().replace('\n', &sep))?;
                 writeln!(&mut results)?;
             }
         }

aoc/tests/dummy-year.rs

@@ -37,7 +37,11 @@ fn day1_main() {
 fn day2() {
     insta::assert_snapshot!(run_with(&["-d", "2"]), @r###"
     Day 2 - part 1: 1606483
-    Day 2 - part 2: 3842356
+    Day 2 - part 2: 20x3x11
+                    15x27x5
+    Day 2 - part 2 — no_eol: 20x3x11
+                             15x27x5
+
     "###);
 }
 
@@ -51,7 +55,11 @@ fn all_days() {
     Day 1 - part 2 — result: 1783
     Day 1 - part 2 — result_string: 1783
     Day 2 - part 1: 1606483
-    Day 2 - part 2: 3842356
+    Day 2 - part 2: 20x3x11
+                    15x27x5
+    Day 2 - part 2 — no_eol: 20x3x11
+                             15x27x5
+
     "###);
 }
 
@@ -62,6 +70,8 @@ fn all_days_main() {
     Day 1 - part 1: 232
     Day 1 - part 2: 1783
     Day 2 - part 1: 1606483
-    Day 2 - part 2: 3842356
+    Day 2 - part 2: 20x3x11
+                    15x27x5
+
     "###);
 }

dummy-year/expected.txt

@@ -4,4 +4,7 @@ Day 1 - part 2: 1783
 Day 1 - part 2 — result: 1783
 Day 1 - part 2 — result_string: 1783
 Day 2 - part 1: 1606483
-Day 2 - part 2: 3842356
+Day 2 - part 2: 20x3x11
+                15x27x5
+Day 2 - part 2 — no_eol: 20x3x11
+                         15x27x5

dummy-year/src/day2.rs

@@ -25,14 +25,11 @@ fn part1(input: &str) -> u32 {
 }
 
 #[aoc(day2, part2)]
-fn part2(input: &str) -> u32 {
-    generator(input)
-        .unwrap()
-        .iter()
-        .map(|v| {
-            let mut v = v.clone();
-            v.sort_unstable();
-            (v[0] + v[1]) * 2 + v[0] * v[1] * v[2]
-        })
-        .sum()
+fn part2(input: &[&str]) -> String {
+    format!("{}\n{}\n", input[0], input[1])
+}
+
+#[aoc(day2, part2, no_eol)]
+fn part2_no_eol(input: &[&str]) -> String {
+    format!("{}\n{}", input[0], input[1])
 }