1 files changed, 31 insertions, 0 deletions
diff --git a/2023/go/internal/day_01/day_01_test.go b/2023/go/internal/day_01/day_01_test.go
new file mode 100644
index 0000000..8063619
--- /dev/null
+++ b/2023/go/internal/day_01/day_01_test.go
@@ -0,0 +1,31 @@
+package day_01
+
+import (
+	"testing"
+)
+
+type input string
+type answer string
+
+func TestFindNumbers(t *testing.T) {
+	data := map[input]answer{
+		"1abc2":       "12",
+		"pqr3stu8vwx": "38",
+		"a1b2c3d4e5f": "15",
+		"treb7uchet":  "77",
+	}
+
+	for input, expected := range data {
+		actual_first, actual_last, err := findNumbers(string(input))
+
+		if err != nil {
+			t.Error("find_numbers returned an error")
+		}
+
+		actual := actual_first + actual_last
+
+		if actual != string(expected) {
+			t.Errorf("Expected %s, got %s", expected, actual)
+		}
+	}
+}