package utils

import "testing"

func TestValidateOptionalShortID(t *testing.T) {
	t.Run("nil pointer returns nil", func(t *testing.T) {
		if err := ValidateOptionalShortID(nil, "test_field"); err != nil {
			t.Errorf("expected nil, got %v", err)
		}
	})

	t.Run("empty string returns nil", func(t *testing.T) {
		empty := ""
		if err := ValidateOptionalShortID(&empty, "test_field"); err != nil {
			t.Errorf("expected nil, got %v", err)
		}
	})

	t.Run("valid ID returns nil", func(t *testing.T) {
		valid := "abc123def456"
		if err := ValidateOptionalShortID(&valid, "test_field"); err != nil {
			t.Errorf("expected nil, got %v", err)
		}
	})

	t.Run("invalid ID returns error", func(t *testing.T) {
		bad := "too-short"
		if err := ValidateOptionalShortID(&bad, "test_field"); err == nil {
			t.Error("expected error for invalid ID")
		}
	})
}

func TestValidateOptionalStringLength(t *testing.T) {
	t.Run("nil pointer returns nil", func(t *testing.T) {
		if err := ValidateOptionalStringLength(nil, "test_field", 10); err != nil {
			t.Errorf("expected nil, got %v", err)
		}
	})

	t.Run("empty string returns nil", func(t *testing.T) {
		empty := ""
		if err := ValidateOptionalStringLength(&empty, "test_field", 10); err != nil {
			t.Errorf("expected nil, got %v", err)
		}
	})

	t.Run("short enough returns nil", func(t *testing.T) {
		s := "hello"
		if err := ValidateOptionalStringLength(&s, "test_field", 10); err != nil {
			t.Errorf("expected nil, got %v", err)
		}
	})

	t.Run("too long returns error", func(t *testing.T) {
		s := "this string is way too long"
		if err := ValidateOptionalStringLength(&s, "test_field", 5); err == nil {
			t.Error("expected error for string too long")
		}
	})
}