ImageSharp/tests/ImageSharp.Tests/Image/ImageTests.Load_FileSystemPath_PassLocalConfiguration.cs

// Copyright (c) Six Labors.
// Licensed under the Six Labors Split License.

using System;
using SixLabors.ImageSharp.Formats;
using SixLabors.ImageSharp.PixelFormats;

using Xunit;

namespace SixLabors.ImageSharp.Tests
{
    public partial class ImageTests
    {
        public class Load_FileSystemPath_PassLocalConfiguration : ImageLoadTestBase
        {
            [Fact]
            public void Configuration_Path_Specific()
            {
                DecoderOptions options = new()
                {
                    Configuration = this.TopLevelConfiguration
                };

                var img = Image.Load<Rgb24>(options, this.MockFilePath);

                Assert.NotNull(img);
                Assert.Equal(this.TestFormat.Sample<Rgb24>(), img);

                this.TestFormat.VerifySpecificDecodeCall<Rgb24>(this.Marker, this.TopLevelConfiguration);
            }

            [Fact]
            public void Configuration_Path_Agnostic()
            {
                DecoderOptions options = new()
                {
                    Configuration = this.TopLevelConfiguration
                };

                var img = Image.Load(options, this.MockFilePath);

                Assert.NotNull(img);
                Assert.Equal(this.TestFormat.SampleAgnostic(), img);

                this.TestFormat.VerifyAgnosticDecodeCall(this.Marker, this.TopLevelConfiguration);
            }

            [Fact]
            public void Configuration_Path_OutFormat_Specific()
            {
                DecoderOptions options = new()
                {
                    Configuration = this.TopLevelConfiguration
                };

                var img = Image.Load<Rgba32>(options, this.MockFilePath, out IImageFormat format);

                Assert.NotNull(img);
                Assert.Equal(this.TestFormat, format);

                this.TestFormat.VerifySpecificDecodeCall<Rgba32>(this.Marker, this.TopLevelConfiguration);
            }

            [Fact]
            public void Configuration_Path_OutFormat_Agnostic()
            {
                DecoderOptions options = new()
                {
                    Configuration = this.TopLevelConfiguration
                };

                var img = Image.Load(options, this.MockFilePath, out IImageFormat format);

                Assert.NotNull(img);
                Assert.Equal(this.TestFormat, format);

                this.TestFormat.VerifyAgnosticDecodeCall(this.Marker, this.TopLevelConfiguration);
            }

            [Fact]
            public void WhenFileNotFound_Throws()
                => Assert.Throws<System.IO.FileNotFoundException>(
                    () =>
                    {
                        DecoderOptions options = new()
                        {
                            Configuration = this.TopLevelConfiguration
                        };

                        Image.Load<Rgba32>(options, Guid.NewGuid().ToString());
                    });

            [Fact]
            public void WhenPathIsNull_Throws()
                => Assert.Throws<ArgumentNullException>(
                    () =>
                    {
                        DecoderOptions options = new()
                        {
                            Configuration = this.TopLevelConfiguration
                        };
                        Image.Load<Rgba32>(options, (string)null);
                    });
        }
    }
}