From b91e34bc8e26d1e2311fd83b851ffffdd30ac2c6 Mon Sep 17 00:00:00 2001
From: Kharec <sandro@cazzaniga.fr>
Date: Thu, 4 Dec 2025 06:32:20 +0100
Subject: [PATCH] test: add unit test for part one

---
 internal/2025/DayFour/code_test.go | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)
 create mode 100644 internal/2025/DayFour/code_test.go

diff --git a/internal/2025/DayFour/code_test.go b/internal/2025/DayFour/code_test.go
new file mode 100644
index 0000000..40b1556
--- /dev/null
+++ b/internal/2025/DayFour/code_test.go
@@ -0,0 +1,24 @@
+package dayfour
+
+import "testing"
+
+var testInput = []string{
+	"..@@.@@@@.",
+	"@@@.@.@.@@",
+	"@@@@@.@.@@",
+	"@.@@@@..@.",
+	"@@.@@@@.@@",
+	".@@@@@@@.@",
+	".@.@.@.@@@",
+	"@.@@@.@@@@",
+	".@@@@@@@@.",
+	"@.@.@@@.@.",
+}
+
+func TestPartOne(t *testing.T) {
+	expected := 13
+	got := PartOne(testInput)
+	if got != expected {
+		t.Errorf("PartOne() = %d, want %d", got, expected)
+	}
+}