Add some automated tests

Author: jerodev

.github/workflows/go-test.yml

@@ -0,0 +1,22 @@
+name: Testing
+
+on:
+  push:
+
+jobs:
+  test:
+    name: Go Test
+    runs-on: ubuntu-latest
+    timeout-minutes: 4
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - uses: actions/setup-go@v5
+        with:
+          go-version: '^1.22'
+
+      - name: Go Test
+        run: |
+          go test ./...

util/parse_test.go

@@ -0,0 +1,25 @@
+package util
+
+import "testing"
+
+func TestIntsToStrings(t *testing.T) {
+	input := []int{2, 4, 6, 8, 10, 12}
+
+	output := IntsToStrings(input)
+
+	for i := range output {
+		if (i+1)*2 != MustAtoi(output[i]) {
+			t.Errorf("Expected value %v at index %v, but got %v", (i+1)*2, i, MustAtoi(output[i]))
+		}
+	}
+}
+
+func TestStringToInts(t *testing.T) {
+	output := StringToInts("2, 4, 6, 8, 10, 12", ", ")
+
+	for i := range output {
+		if (i+1)*2 != output[i] {
+			t.Errorf("Expected value %v at index %v, but got %v", (i+1)*2, i, output[i])
+		}
+	}
+}