From 94ecbd27bfc639ade42e993e3d0189859f5a4460 Mon Sep 17 00:00:00 2001
From: Kharec <sandro@cazzaniga.fr>
Date: Sat, 6 Dec 2025 23:45:52 +0100
Subject: [PATCH] test: add unit test for part one

---
 internal/2018/DayFour/code_test.go | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)
 create mode 100644 internal/2018/DayFour/code_test.go

diff --git a/internal/2018/DayFour/code_test.go b/internal/2018/DayFour/code_test.go
new file mode 100644
index 0000000..1345e03
--- /dev/null
+++ b/internal/2018/DayFour/code_test.go
@@ -0,0 +1,30 @@
+package dayfour
+
+import "testing"
+
+func TestPartOne(t *testing.T) {
+	input := []string{
+		"[1518-11-01 00:00] Guard #10 begins shift",
+		"[1518-11-01 00:05] falls asleep",
+		"[1518-11-01 00:25] wakes up",
+		"[1518-11-01 00:30] falls asleep",
+		"[1518-11-01 00:55] wakes up",
+		"[1518-11-01 23:58] Guard #99 begins shift",
+		"[1518-11-02 00:40] falls asleep",
+		"[1518-11-02 00:50] wakes up",
+		"[1518-11-03 00:05] Guard #10 begins shift",
+		"[1518-11-03 00:24] falls asleep",
+		"[1518-11-03 00:29] wakes up",
+		"[1518-11-04 00:02] Guard #99 begins shift",
+		"[1518-11-04 00:36] falls asleep",
+		"[1518-11-04 00:46] wakes up",
+		"[1518-11-05 00:03] Guard #99 begins shift",
+		"[1518-11-05 00:45] falls asleep",
+		"[1518-11-05 00:55] wakes up",
+	}
+	expected := 240
+	got := PartOne(input)
+	if got != expected {
+		t.Errorf("PartOne() = %d, want %d", got, expected)
+	}
+}