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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
using System.ComponentModel;
using System.Drawing.Imaging;
using System.Runtime.InteropServices;
using System.Windows.Forms.TestUtilities;
namespace System.Drawing.Design.Tests;
public class MetafileEditorTests
{
[Fact]
public void MetafileEditor_Ctor_Default()
{
MetafileEditor editor = new();
Assert.False(editor.IsDropDownResizable);
}
[Theory]
[CommonMemberData(typeof(CommonTestHelperEx), nameof(CommonTestHelperEx.GetITypeDescriptorContextTestData))]
public void MetafileEditor_GetEditStyle_Invoke_ReturnsModal(ITypeDescriptorContext context)
{
MetafileEditor editor = new();
Assert.Equal(UITypeEditorEditStyle.Modal, editor.GetEditStyle(context));
}
[Fact]
public void MetafileEditor_GetExtensions_InvokeDefault_ReturnsExpected()
{
SubMetafileEditor editor = new();
string[] extensions = editor.GetExtensions();
Assert.Equal(new string[] { "emf", "wmf" }, extensions);
Assert.NotSame(extensions, editor.GetExtensions());
}
[Fact]
public void MetafileEditor_GetFileDialogDescription_Invoke_ReturnsExpected()
{
SubMetafileEditor editor = new();
Assert.Equal("Metafiles", editor.GetFileDialogDescription());
}
[Theory]
[CommonMemberData(typeof(CommonTestHelperEx), nameof(CommonTestHelperEx.GetITypeDescriptorContextTestData))]
public void MetafileEditor_GetPaintValueSupported_Invoke_ReturnsTrue(ITypeDescriptorContext context)
{
MetafileEditor editor = new();
Assert.True(editor.GetPaintValueSupported(context));
}
[Fact]
public void MetafileEditor_LoadFromStream_BitmapStream_ThrowsExternalException()
{
SubMetafileEditor editor = new();
using MemoryStream stream = new();
using Bitmap image = new(10, 10);
image.Save(stream, ImageFormat.Bmp);
stream.Position = 0;
Assert.Throws<ExternalException>(() => editor.LoadFromStream(stream));
}
[Fact]
public void MetafileEditor_LoadFromStream_MetafileStream_ReturnsExpected()
{
SubMetafileEditor editor = new();
using Stream stream = File.OpenRead("Resources/telescope_01.wmf");
Metafile result = Assert.IsType<Metafile>(editor.LoadFromStream(stream));
Assert.Equal(new Size(3096, 4127), result.Size);
}
[Fact]
public void MetafileEditor_LoadFromStream_NullStream_ThrowsArgumentNullException()
{
SubMetafileEditor editor = new();
Assert.Throws<ArgumentNullException>("stream", () => editor.LoadFromStream(null));
}
private class SubMetafileEditor : MetafileEditor
{
public new string[] GetExtensions() => base.GetExtensions();
public new string GetFileDialogDescription() => base.GetFileDialogDescription();
public new Image LoadFromStream(Stream stream) => base.LoadFromStream(stream);
}
private class CustomGetImageExtendersEditor : MetafileEditor
{
public new string[] GetExtensions() => base.GetExtensions();
protected override Type[] GetImageExtenders() => [typeof(CustomGetExtensionsEditor)];
}
private class CustomGetExtensionsEditor : ImageEditor
{
protected override string[] GetExtensions() => ["CustomGetExtensionsEditor"];
}
}
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