package app

import (
	"testing"

	"github.com/geo-platform/tenant-api/internal/shared/response"
	"github.com/stretchr/testify/assert"
	"github.com/stretchr/testify/require"
)

func TestValidateOptionalAdminUserLimit(t *testing.T) {
	positive := 3
	zero := 0
	negative := -1

	tests := []struct {
		name    string
		value   *int
		wantErr bool
	}{
		{name: "null inherits config", value: nil},
		{name: "positive override", value: &positive},
		{name: "zero rejected", value: &zero, wantErr: true},
		{name: "negative rejected", value: &negative, wantErr: true},
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			err := validateOptionalAdminUserLimit("brand_limit", tt.value)
			if !tt.wantErr {
				require.NoError(t, err)
				return
			}
			var appErr *response.AppError
			require.ErrorAs(t, err, &appErr)
			assert.Equal(t, "invalid_limit", appErr.Message)
		})
	}
}