// 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.Testing;
using Xunit;

namespace Microsoft.AspNetCore.Mvc.ApplicationModels
{
    public class PageConventionCollectionTest
    {
        [Theory]
        [InlineData(null)]
        [InlineData("")]
        public void EnsureValidPageName_ThrowsIfPageNameIsNullOrEmpty(string pageName)
        {
            // Act & Assert
            var ex = ExceptionAssert.ThrowsArgument(
                () => PageConventionCollection.EnsureValidPageName(pageName),
                "pageName",
                "Value cannot be null or empty.");
        }

        [Theory]
        [InlineData("path-without-slash")]
        [InlineData(@"c:\myapp\path-without-slash")]
        public void EnsureValidPageName_ThrowsIfPageNameDoesNotStartWithLeadingSlash(string pageName)
        {
            // Arrange
            var expected = $"'{pageName}' is not a valid page name. A page name is path relative to the Razor Pages root directory that starts with a leading forward slash ('/') and does not contain the file extension e.g \"/Users/Edit\".";
            // Act & Assert
            var ex = ExceptionAssert.ThrowsArgument(
                () => PageConventionCollection.EnsureValidPageName(pageName),
                "pageName",
                expected);
        }

        [Fact]
        public void EnsureValidPageName_ThrowsIfPageNameHasExtension()
        {
            // Arrange
            var pageName = "/Page.cshtml";
            var expected = $"'{pageName}' is not a valid page name. A page name is path relative to the Razor Pages root directory that starts with a leading forward slash ('/') and does not contain the file extension e.g \"/Users/Edit\".";
            // Act & Assert
            var ex = ExceptionAssert.ThrowsArgument(
                () => PageConventionCollection.EnsureValidPageName(pageName),
                "pageName",
                expected);
        }

        [Theory]
        [InlineData(null)]
        [InlineData("")]
        public void EnsureValidFolderPath_ThrowsIfPathIsNullOrEmpty(string folderPath)
        {
            // Arrange
            // Act & Assert
            var ex = ExceptionAssert.ThrowsArgument(
                () => PageConventionCollection.EnsureValidFolderPath(folderPath),
                "folderPath",
               "Value cannot be null or empty.");
        }

        [Theory]
        [InlineData("path-without-slash")]
        [InlineData(@"c:\myapp\path-without-slash")]
        public void EnsureValidFolderPath_ThrowsIfPageNameDoesNotStartWithLeadingSlash(string folderPath)
        {
            // Arrange
            // Act & Assert
            var ex = ExceptionAssert.ThrowsArgument(
                () => PageConventionCollection.EnsureValidFolderPath(folderPath),
                "folderPath",
                "Path must be a root relative path that starts with a forward slash '/'.");
        }

        [Fact]
        public void RemoveType_RemovesAllOfType()
        {
            // Arrange
            var collection = new PageConventionCollection
            {
                new FooPageConvention(),
                new BarPageConvention(),
                new FooPageConvention()
            };

            // Act
            collection.RemoveType(typeof(FooPageConvention));

            // Assert
            Assert.Collection(
                collection,
                convention => Assert.IsType<BarPageConvention>(convention));
        }

        [Fact]
        public void GenericRemoveType_RemovesAllOfType()
        {
            // Arrange
            var collection = new PageConventionCollection
            {
                new FooPageConvention(),
                new BarPageConvention(),
                new FooPageConvention()
            };

            // Act
            collection.RemoveType<FooPageConvention>();

            // Assert
            Assert.Collection(
               collection,
               convention => Assert.IsType<BarPageConvention>(convention));
        }

        private class FooPageConvention : IPageConvention { }

        private class BarPageConvention : IPageConvention { }
    }
}