Refactor a bit more for testing, update tests

util_test.go

@@ -0,0 +1,32 @@
+package main
+
+import "testing"
+
+func TestUtilEqualSliceString(t *testing.T) {
+	cases := []struct {
+		a, b     []string
+		expected bool
+	}{
+		// Equal cases
+		{nil, nil, true},
+		{nil, []string{}, true},
+		{[]string{}, nil, true},
+		{[]string{"a"}, []string{"a"}, true},
+		// Inequal cases
+		{nil, []string{"b"}, false},
+		{[]string{"a"}, nil, false},
+		{[]string{"a"}, []string{"b"}, false},
+		{[]string{"a"}, []string{"a", "b"}, false},
+		{[]string{"a", "b"}, []string{"b"}, false},
+	}
+
+	for _, c := range cases {
+		actual := EqualSliceString(c.a, c.b)
+		if actual != c.expected {
+			t.Errorf(
+				"EqualSliceString(%v, %v), expected=%v actual=%v",
+				c.a, c.b, c.expected, actual,
+			)
+		}
+	}
+}