// Copyright (c) .NET Foundation. All rights reserved.
// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.

using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Routing.Constraints;
using Moq;
using Xunit;

namespace Microsoft.AspNetCore.Routing.Tests
{
    public class RequiredRouteConstraintTests
    {
        [Theory]
        [InlineData(RouteDirection.IncomingRequest)]
        [InlineData(RouteDirection.UrlGeneration)]
        public void RequiredRouteConstraint_NoValue(RouteDirection direction)
        {
            // Arrange
            var constraint = new RequiredRouteConstraint();

            // Act
            var result = constraint.Match(
                Mock.Of<HttpContext>(),
                Mock.Of<IRouter>(),
                "area",
                new RouteValueDictionary(new { controller = "Home", action = "Index" }),
                direction);

            // Assert
            Assert.False(result);
        }

        [Theory]
        [InlineData(RouteDirection.IncomingRequest)]
        [InlineData(RouteDirection.UrlGeneration)]
        public void RequiredRouteConstraint_Null(RouteDirection direction)
        {
            // Arrange
            var constraint = new RequiredRouteConstraint();

            // Act
            var result = constraint.Match(
                Mock.Of<HttpContext>(),
                Mock.Of<IRouter>(),
                "area",
                new RouteValueDictionary(new { controller = "Home", action = "Index", area = (string)null }),
                direction);

            // Assert
            Assert.False(result);
        }

        [Theory]
        [InlineData(RouteDirection.IncomingRequest)]
        [InlineData(RouteDirection.UrlGeneration)]
        public void RequiredRouteConstraint_EmptyString(RouteDirection direction)
        {
            // Arrange
            var constraint = new RequiredRouteConstraint();

            // Act
            var result = constraint.Match(
                Mock.Of<HttpContext>(),
                Mock.Of<IRouter>(),
                "area",
                new RouteValueDictionary(new { controller = "Home", action = "Index", area = string.Empty}),
                direction);

            // Assert
            Assert.False(result);
        }

        [Theory]
        [InlineData(RouteDirection.IncomingRequest)]
        [InlineData(RouteDirection.UrlGeneration)]
        public void RequiredRouteConstraint_WithValue(RouteDirection direction)
        {
            // Arrange
            var constraint = new RequiredRouteConstraint();

            // Act
            var result = constraint.Match(
                Mock.Of<HttpContext>(),
                Mock.Of<IRouter>(),
                "area",
                new RouteValueDictionary(new { controller = "Home", action = "Index", area = "Store" }),
                direction);

            // Assert
            Assert.True(result);
        }
    }
}