sum: v1

sum/sum.go

@@ -0,0 +1,10 @@
+package sum
+
+func Sum(numbers [5]int) int {
+	sum := 0
+
+	for i := 0; i < 5; i++ {
+		sum += numbers[i]
+	}
+	return sum
+}

sum/sum_test.go

@@ -0,0 +1,14 @@
+package sum
+
+import "testing"
+
+func TestSum(t *testing.T) {
+	numbers := [5]int{1, 2, 3, 4, 5}
+
+	got := Sum(numbers)
+	exp := 15
+
+	if got != exp {
+		t.Errorf("got %d, expected %d, given %v", got, exp, numbers)
+	}
+}