diff --git a/aoc b/aoc
index 25c0ea8..7be3c49 100755
--- a/aoc
+++ b/aoc
@@ -6,6 +6,7 @@ use NunoMaduro\Collision\Provider as CollisionProvider;
 use Symfony\Component\Console\Application;
 use trizz\AdventOfCode\Commands\ExecuteDay;
 use trizz\AdventOfCode\Commands\Puzzle;
+use trizz\AdventOfCode\Commands\TestDay;
 
 (new CollisionProvider())->register();
 
@@ -13,6 +14,7 @@ $application = new Application('Advent of Code by trizz');
 
 $application->add(new Puzzle());
 $application->add(new ExecuteDay());
+$application->add(new TestDay());
 
 try {
     $application->run();
diff --git a/src/Commands/TestDay.php b/src/Commands/TestDay.php
new file mode 100644
index 0000000..0a34c37
--- /dev/null
+++ b/src/Commands/TestDay.php
@@ -0,0 +1,56 @@
+<?php
+
+namespace trizz\AdventOfCode\Commands;
+
+use Symfony\Component\Console\Command\Command;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Output\OutputInterface;
+
+final class TestDay extends AbstractDayCommand
+{
+    #[\Override]
+    protected function configure(): void
+    {
+        parent::configure();
+        $this
+            ->setName('test')
+            ->setDescription('Test day');
+    }
+
+    #[\Override]
+    protected function execute(InputInterface $input, OutputInterface $output): int
+    {
+        $results = $this->getSolutions();
+        $solution = $this->loadClass();
+
+        if (in_array($this->part, [0, 1], true)) {
+            $output->writeln('<fg=bright-green>Part 1</>');
+            $this->render($output, 'Example', $solution::$part1ExampleResult, $results['part1Example']);
+            $this->render($output, 'Puzzle', $solution::$part1Result, $results['part1']);
+        }
+
+        if ($this->part === 0) {
+            $output->writeln(str_repeat('-', strlen($this->title)));
+        }
+
+        if (in_array($this->part, [0, 2], true)) {
+            $output->writeln('<fg=bright-green>Part 2</>');
+            $this->render($output, 'Example', $solution::$part2ExampleResult, $results['part2Example']);
+            $this->render($output, 'Puzzle', $solution::$part2Result, $results['part2']);
+        }
+
+        return Command::SUCCESS;
+    }
+
+    private function render(OutputInterface $output, string $title, null|int|string $expected, null|int|string $result): void
+    {
+        if ($title === 'Example' && $this->skipExamples) {
+            return;
+        }
+
+        $color = $expected === $result ? 'green' : 'red';
+        $output->writeln(sprintf('  <fg=blue>%s:</>', $title));
+        $output->writeln(sprintf('    <fg=%s>Expected: </> <comment>%s</comment>', $color, $expected));
+        $output->writeln(sprintf('    <fg=%s>Result:   </> <comment>%s</comment>', $color, $result));
+    }
+}