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Reviving PartialViewResult and associated methods on Controller 

Fixes #824
This commit is contained in:
Pranav K 2014-10-08 17:19:33 -07:00
parent 7666d5973f
commit de77c92a0a
18 changed files with 698 additions and 331 deletions
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21
src/Microsoft.AspNet.Mvc.Core/ActionResults/PartialViewResult.cs Normal file
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@ -0,0 +1,21 @@
// Copyright (c) Microsoft Open Technologies, Inc. All rights reserved.
// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
using Microsoft.AspNet.Mvc.Rendering;
namespace Microsoft.AspNet.Mvc
{
/// <summary>
/// Represents a <see cref="ViewResultBase"/> that renders a partial view.
/// </summary>
public class PartialViewResult : ViewResultBase
{
/// <inheritdoc />
protected override ViewEngineResult FindView([NotNull] IViewEngine viewEngine,
[NotNull] ActionContext context,
[NotNull] string viewName)
{
return viewEngine.FindPartialView(context, viewName);
}
}
}

144
src/Microsoft.AspNet.Mvc.Core/ActionResults/ViewResult.cs
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@ -1,147 +1,21 @@
// Copyright (c) Microsoft Open Technologies, Inc. All rights reserved.
// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
using System;
using System.IO;
using System.Threading.Tasks;
using Microsoft.AspNet.Mvc.Core;
using Microsoft.AspNet.Mvc.Rendering;
using Microsoft.Framework.DependencyInjection;
namespace Microsoft.AspNet.Mvc
{
public class ViewResult : ActionResult
/// <summary>
/// Represents a <see cref="ViewResultBase"/> that renders a view to the response.
/// </summary>
public class ViewResult : ViewResultBase
{
private const int BufferSize = 1024;
public string ViewName { get; set; }
public ViewDataDictionary ViewData { get; set; }
public IViewEngine ViewEngine { get; set; }
public override async Task ExecuteResultAsync([NotNull] ActionContext context)
/// <inheritdoc />
protected override ViewEngineResult FindView([NotNull] IViewEngine viewEngine,
[NotNull] ActionContext context,
[NotNull] string viewName)
{
var viewEngine = ViewEngine ?? context.HttpContext.RequestServices.GetService<ICompositeViewEngine>();
var viewName = ViewName ?? context.ActionDescriptor.Name;
var view = FindView(viewEngine, context, viewName);
using (view as IDisposable)
{
context.HttpContext.Response.ContentType = "text/html; charset=utf-8";
var wrappedStream = new StreamWrapper(context.HttpContext.Response.Body);
var encoding = Encodings.UTF8EncodingWithoutBOM;
using (var writer = new StreamWriter(wrappedStream, encoding, BufferSize, leaveOpen: true))
{
try
{
var viewContext = new ViewContext(context, view, ViewData, writer);
await view.RenderAsync(viewContext);
}
catch
{
// Need to prevent writes/flushes on dispose because the StreamWriter will flush even if
// nothing got written. This leads to a response going out on the wire prematurely in case an
// exception is being thrown inside the try catch block.
wrappedStream.BlockWrites = true;
throw;
}
}
}
}
private static IView FindView(IViewEngine viewEngine, ActionContext context, string viewName)
{
var result = viewEngine.FindView(context, viewName);
if (!result.Success)
{
var locations = string.Empty;
if (result.SearchedLocations != null)
{
locations = Environment.NewLine +
string.Join(Environment.NewLine, result.SearchedLocations);
}
throw new InvalidOperationException(Resources.FormatViewEngine_ViewNotFound(viewName, locations));
}
return result.View;
}
private class StreamWrapper : Stream
{
private readonly Stream _wrappedStream;
public StreamWrapper([NotNull] Stream stream)
{
_wrappedStream = stream;
}
public bool BlockWrites { get; set; }
public override bool CanRead
{
get { return _wrappedStream.CanRead; }
}
public override bool CanSeek
{
get { return _wrappedStream.CanSeek; }
}
public override bool CanWrite
{
get { return _wrappedStream.CanWrite; }
}
public override void Flush()
{
if (!BlockWrites)
{
_wrappedStream.Flush();
}
}
public override long Length
{
get { return _wrappedStream.Length; }
}
public override long Position
{
get
{
return _wrappedStream.Position;
}
set
{
_wrappedStream.Position = value;
}
}
public override int Read(byte[] buffer, int offset, int count)
{
return _wrappedStream.Read(buffer, offset, count);
}
public override long Seek(long offset, SeekOrigin origin)
{
return Seek(offset, origin);
}
public override void SetLength(long value)
{
SetLength(value);
}
public override void Write(byte[] buffer, int offset, int count)
{
if (!BlockWrites)
{
_wrappedStream.Write(buffer, offset, count);
}
}
return viewEngine.FindView(context, viewName);
}
}
}

162
src/Microsoft.AspNet.Mvc.Core/ActionResults/ViewResultBase.cs Normal file
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@ -0,0 +1,162 @@
// Copyright (c) Microsoft Open Technologies, Inc. All rights reserved.
// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
using System;
using System.IO;
using System.Threading.Tasks;
using Microsoft.AspNet.Mvc.Core;
using Microsoft.AspNet.Mvc.Rendering;
using Microsoft.Framework.DependencyInjection;
namespace Microsoft.AspNet.Mvc
{
/// <summary>
/// Represents the base type for an <see cref="ActionResult"/> that renders a view to the response.
/// </summary>
public abstract class ViewResultBase : ActionResult
{
private const int BufferSize = 1024;
public string ViewName { get; set; }
public ViewDataDictionary ViewData { get; set; }
public IViewEngine ViewEngine { get; set; }
public override async Task ExecuteResultAsync([NotNull] ActionContext context)
{
var viewEngine = ViewEngine ?? context.HttpContext.RequestServices.GetService<ICompositeViewEngine>();
var viewName = ViewName ?? context.ActionDescriptor.Name;
var view = FindViewInternal(viewEngine, context, viewName);
using (view as IDisposable)
{
context.HttpContext.Response.ContentType = "text/html; charset=utf-8";
var wrappedStream = new StreamWrapper(context.HttpContext.Response.Body);
var encoding = Encodings.UTF8EncodingWithoutBOM;
using (var writer = new StreamWriter(wrappedStream, encoding, BufferSize, leaveOpen: true))
{
try
{
var viewContext = new ViewContext(context, view, ViewData, writer);
await view.RenderAsync(viewContext);
}
catch
{
// Need to prevent writes/flushes on dispose because the StreamWriter will flush even if
// nothing got written. This leads to a response going out on the wire prematurely in case an
// exception is being thrown inside the try catch block.
wrappedStream.BlockWrites = true;
throw;
}
}
}
}
/// <summary>
/// Attempts to locate the view named <paramref name="viewName"/> using the specified
/// <paramref name="viewEngine"/>.
/// </summary>
/// <param name="viewEngine">The <see cref="IViewEngine"/> used to locate the view.</param>
/// <param name="context">The <see cref="ActionContext"/> for the executing action.</param>
/// <param name="viewName">The view to find.</param>
/// <returns></returns>
protected abstract ViewEngineResult FindView(IViewEngine viewEngine,
ActionContext context,
string viewName);
private IView FindViewInternal(IViewEngine viewEngine, ActionContext context, string viewName)
{
var result = FindView(viewEngine, context, viewName);
if (!result.Success)
{
var locations = string.Empty;
if (result.SearchedLocations != null)
{
locations = Environment.NewLine +
string.Join(Environment.NewLine, result.SearchedLocations);
}
throw new InvalidOperationException(Resources.FormatViewEngine_ViewNotFound(viewName, locations));
}
return result.View;
}
private class StreamWrapper : Stream
{
private readonly Stream _wrappedStream;
public StreamWrapper([NotNull] Stream stream)
{
_wrappedStream = stream;
}
public bool BlockWrites { get; set; }
public override bool CanRead
{
get { return _wrappedStream.CanRead; }
}
public override bool CanSeek
{
get { return _wrappedStream.CanSeek; }
}
public override bool CanWrite
{
get { return _wrappedStream.CanWrite; }
}
public override void Flush()
{
if (!BlockWrites)
{
_wrappedStream.Flush();
}
}
public override long Length
{
get { return _wrappedStream.Length; }
}
public override long Position
{
get
{
return _wrappedStream.Position;
}
set
{
_wrappedStream.Position = value;
}
}
public override int Read(byte[] buffer, int offset, int count)
{
return _wrappedStream.Read(buffer, offset, count);
}
public override long Seek(long offset, SeekOrigin origin)
{
return Seek(offset, origin);
}
public override void SetLength(long value)
{
SetLength(value);
}
public override void Write(byte[] buffer, int offset, int count)
{
if (!BlockWrites)
{
_wrappedStream.Write(buffer, offset, count);
}
}
}
}
}

56
src/Microsoft.AspNet.Mvc.Core/Controller.cs
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@ -187,6 +187,62 @@ namespace Microsoft.AspNet.Mvc
};
}
/// <summary>
/// Creates a <see cref="PartialViewResult"/> object that renders a partial view to the response.
/// </summary>
/// <returns>The created <see cref="PartialViewResult"/> object for the response.</returns>
[NonAction]
public virtual PartialViewResult PartialView()
{
return PartialView(viewName: null);
}
/// <summary>
/// Creates a <see cref="PartialViewResult"/> object by specifying a <paramref name="viewName"/>.
/// </summary>
/// <param name="viewName">The name of the view that is rendered to the response.</param>
/// <returns>The created <see cref="PartialViewResult"/> object for the response.</returns>
[NonAction]
public virtual PartialViewResult PartialView(string viewName)
{
return PartialView(viewName, model: null);
}
/// <summary>
/// Creates a <see cref="PartialViewResult"/> object by specifying a <paramref name="model"/>
/// to be rendered by the partial view.
/// </summary>
/// <param name="model">The model that is rendered by the partial view.</param>
/// <returns>The created <see cref="PartialViewResult"/> object for the response.</returns>
[NonAction]
public virtual PartialViewResult PartialView(object model)
{
return PartialView(viewName: null, model: model);
}
/// <summary>
/// Creates a <see cref="PartialViewResult"/> object by specifying a <paramref name="viewName"/>
/// and the <paramref name="model"/> to be rendered by the partial view.
/// </summary>
/// <param name="viewName">The name of the partial view that is rendered to the response.</param>
/// <param name="model">The model that is rendered by the partial view.</param>
/// <returns>The created <see cref="PartialViewResult"/> object for the response.</returns>
[NonAction]
public virtual PartialViewResult PartialView(string viewName, object model)
{
// Do not override ViewData.Model unless passed a non-null value.
if (model != null)
{
ViewData.Model = model;
}
return new PartialViewResult()
{
ViewName = viewName,
ViewData = ViewData,
};
}
/// <summary>
/// Creates a <see cref="ContentResult"/> object by specifying a <paramref name="content"/> string.
/// </summary>

41
test/Microsoft.AspNet.Mvc.Core.Test/ActionResults/PartialViewResultTest.cs Normal file
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@ -0,0 +1,41 @@
// Copyright (c) Microsoft Open Technologies, Inc. All rights reserved.
// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
using System.Threading.Tasks;
using Microsoft.AspNet.Mvc.Rendering;
using Microsoft.AspNet.PipelineCore;
using Microsoft.AspNet.Routing;
using Moq;
using Xunit;
namespace Microsoft.AspNet.Mvc.Core
{
public class PartialViewResultTest
{
[Fact]
public async Task PartialViewResult_UsesFindViewOnSpecifiedViewEngineToLocateViews()
{
// Arrange
var viewName = "mypartialview";
var context = new ActionContext(new DefaultHttpContext(), new RouteData(), new ActionDescriptor());
var viewEngine = new Mock<IViewEngine>();
var view = Mock.Of<IView>();
viewEngine.Setup(e => e.FindPartialView(context, viewName))
.Returns(ViewEngineResult.Found(viewName, view))
.Verifiable();
var viewResult = new PartialViewResult
{
ViewEngine = viewEngine.Object,
ViewName = viewName
};
// Act
await viewResult.ExecuteResultAsync(context);
// Assert
viewEngine.Verify();
}
}
}

243
test/Microsoft.AspNet.Mvc.Core.Test/ActionResults/ViewResultBaseTest.cs Normal file
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@ -0,0 +1,243 @@
// Copyright (c) Microsoft Open Technologies, Inc. All rights reserved.
// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
using System;
using System.Collections.Generic;
using System.IO;
using System.Threading.Tasks;
using Microsoft.AspNet.Mvc.Rendering;
using Microsoft.AspNet.PipelineCore;
using Microsoft.AspNet.Routing;
using Moq;
using Moq.Protected;
using Xunit;
namespace Microsoft.AspNet.Mvc.Core
{
public class ViewResultBaseTest
{
// The buffer size of the StreamWriter used in ViewResult.
private const int ViewResultStreamWriterBufferSize = 1024;
[Fact]
public async Task ExecuteResultAsync_ReturnsError_IfViewCouldNotBeFound()
{
// Arrange
var expected = string.Join(Environment.NewLine,
"The view 'MyView' was not found. The following locations were searched:",
"Location1",
"Location2.");
var actionContext = new ActionContext(new DefaultHttpContext(),
new RouteData(),
new ActionDescriptor());
var viewEngine = Mock.Of<IViewEngine>();
var mockResult = new Mock<ViewResultBase> { CallBase = true };
mockResult.Protected()
.Setup<ViewEngineResult>("FindView", viewEngine, actionContext, ItExpr.IsAny<string>())
.Returns(ViewEngineResult.NotFound("MyView", new[] { "Location1", "Location2" }))
.Verifiable();
var viewResult = mockResult.Object;
viewResult.ViewEngine = viewEngine;
viewResult.ViewName = "MyView";
// Act and Assert
var ex = await Assert.ThrowsAsync<InvalidOperationException>(
() => viewResult.ExecuteResultAsync(actionContext));
Assert.Equal(expected, ex.Message);
mockResult.Verify();
}
[Fact]
public async Task ExecuteResultAsync_UsesActionDescriptorName_IfViewNameIsNullOrEmpty()
{
// Arrange
var viewName = "some-view-name";
var actionContext = new ActionContext(new DefaultHttpContext(),
new RouteData(),
new ActionDescriptor { Name = viewName });
var viewEngine = Mock.Of<IViewEngine>();
var mockResult = new Mock<ViewResultBase> { CallBase = true };
mockResult.Protected()
.Setup<ViewEngineResult>("FindView", viewEngine, actionContext, viewName)
.Returns(ViewEngineResult.Found(viewName, Mock.Of<IView>()))
.Verifiable();
var viewResult = mockResult.Object;
viewResult.ViewEngine = viewEngine;
// Act
await viewResult.ExecuteResultAsync(actionContext);
// Assert
mockResult.Verify();
}
[Fact]
public async Task ExecuteResultAsync_WritesOutputWithoutBOM()
{
// Arrange
var expected = new byte[] { 97, 98, 99, 100 };
var view = new Mock<IView>();
view.Setup(v => v.RenderAsync(It.IsAny<ViewContext>()))
.Callback((ViewContext v) =>
{
view.ToString();
v.Writer.Write("abcd");
})
.Returns(Task.FromResult(0));
var viewEngine = Mock.Of<ICompositeViewEngine>();
var routeDictionary = new Dictionary<string, object>();
var serviceProvider = new Mock<IServiceProvider>();
serviceProvider.Setup(sp => sp.GetService(typeof(ICompositeViewEngine)))
.Returns(viewEngine);
var context = new DefaultHttpContext
{
RequestServices = serviceProvider.Object,
};
var memoryStream = new MemoryStream();
context.Response.Body = memoryStream;
var actionContext = new ActionContext(context,
new RouteData { Values = routeDictionary },
new ActionDescriptor());
var viewResult = new Mock<ViewResultBase> { CallBase = true };
var result = new Mock<ViewResultBase> { CallBase = true };
result.Protected()
.Setup<ViewEngineResult>("FindView", viewEngine, actionContext, ItExpr.IsAny<string>())
.Returns(ViewEngineResult.Found("MyView", view.Object));
// Act
await result.Object.ExecuteResultAsync(actionContext);
// Assert
Assert.Equal(expected, memoryStream.ToArray());
}
[Fact]
public async Task ExecuteResultAsync_UsesProvidedViewEngine()
{
// Arrange
var expected = new byte[] { 97, 98, 99, 100 };
var view = new Mock<IView>();
view.Setup(v => v.RenderAsync(It.IsAny<ViewContext>()))
.Callback((ViewContext v) =>
{
view.ToString();
v.Writer.Write("abcd");
})
.Returns(Task.FromResult(0));
var routeDictionary = new Dictionary<string, object>();
var goodViewEngine = Mock.Of<IViewEngine>();
var badViewEngine = new Mock<ICompositeViewEngine>(MockBehavior.Strict);
var serviceProvider = new Mock<IServiceProvider>();
serviceProvider.Setup(sp => sp.GetService(typeof(ICompositeViewEngine)))
.Returns(badViewEngine.Object);
var context = new DefaultHttpContext
{
RequestServices = serviceProvider.Object,
};
var memoryStream = new MemoryStream();
context.Response.Body = memoryStream;
var actionContext = new ActionContext(context,
new RouteData { Values = routeDictionary },
new ActionDescriptor());
var result = new Mock<ViewResultBase> { CallBase = true };
result.Protected()
.Setup<ViewEngineResult>("FindView", goodViewEngine, actionContext, ItExpr.IsAny<string>())
.Returns(ViewEngineResult.Found("MyView", view.Object))
.Verifiable();
result.Object.ViewEngine = goodViewEngine;
// Act
await result.Object.ExecuteResultAsync(actionContext);
// Assert
Assert.Equal(expected, memoryStream.ToArray());
result.Verify();
}
public static IEnumerable<object[]> ExecuteResultAsync_DoesNotWriteToResponse_OnceExceptionIsThrownData
{
get
{
yield return new object[] { 30, 0 };
if (PlatformHelper.IsMono)
{
// The StreamWriter in Mono buffers 2x the buffer size before flushing.
yield return new object[] { ViewResultStreamWriterBufferSize * 2 + 30, ViewResultStreamWriterBufferSize };
}
else
{
yield return new object[] { ViewResultStreamWriterBufferSize + 30, ViewResultStreamWriterBufferSize };
}
}
}
// The StreamWriter used by ViewResult an internal buffer and consequently anything written to this buffer
// prior to it filling up will not be written to the underlying stream once an exception is thrown.
[Theory]
[MemberData(nameof(ExecuteResultAsync_DoesNotWriteToResponse_OnceExceptionIsThrownData))]
public async Task ExecuteResultAsync_DoesNotWriteToResponse_OnceExceptionIsThrown(int writtenLength, int expectedLength)
{
// Arrange
var longString = new string('a', writtenLength);
var routeDictionary = new Dictionary<string, object>();
var view = new Mock<IView>();
view.Setup(v => v.RenderAsync(It.IsAny<ViewContext>()))
.Callback((ViewContext v) =>
{
view.ToString();
v.Writer.Write(longString);
throw new Exception();
});
var viewEngine = Mock.Of<ICompositeViewEngine>();
var serviceProvider = new Mock<IServiceProvider>();
serviceProvider.Setup(sp => sp.GetService(typeof(ICompositeViewEngine)))
.Returns(viewEngine);
var context = new DefaultHttpContext
{
RequestServices = serviceProvider.Object,
};
var memoryStream = new MemoryStream();
context.Response.Body = memoryStream;
var actionContext = new ActionContext(context,
new RouteData { Values = routeDictionary },
new ActionDescriptor());
var result = new Mock<ViewResultBase> { CallBase = true };
result.Protected()
.Setup<ViewEngineResult>("FindView", viewEngine, actionContext, ItExpr.IsAny<string>())
.Returns(ViewEngineResult.Found("MyView", view.Object))
.Verifiable();
// Act
await Record.ExceptionAsync(() => result.Object.ExecuteResultAsync(actionContext));
// Assert
Assert.Equal(expectedLength, memoryStream.Length);
}
}
}

41
test/Microsoft.AspNet.Mvc.Core.Test/ActionResults/ViewResultTest.cs Normal file
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@ -0,0 +1,41 @@
// Copyright (c) Microsoft Open Technologies, Inc. All rights reserved.
// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
using System.Threading.Tasks;
using Microsoft.AspNet.Mvc.Rendering;
using Microsoft.AspNet.PipelineCore;
using Microsoft.AspNet.Routing;
using Moq;
using Xunit;
namespace Microsoft.AspNet.Mvc.Core
{
public class ViewResultTest
{
[Fact]
public async Task ViewResult_UsesFindViewOnSpecifiedViewEngineToLocateViews()
{
// Arrange
var viewName = "myview";
var context = new ActionContext(new DefaultHttpContext(), new RouteData(), new ActionDescriptor());
var viewEngine = new Mock<IViewEngine>();
var view = Mock.Of<IView>();
viewEngine.Setup(e => e.FindView(context, "myview"))
.Returns(ViewEngineResult.Found("myview", view))
.Verifiable();
var viewResult = new ViewResult
{
ViewName = viewName,
ViewEngine = viewEngine.Object
};
// Act
await viewResult.ExecuteResultAsync(context);
// Assert
viewEngine.Verify();
}
}
}

196
test/Microsoft.AspNet.Mvc.Core.Test/ViewResultTest.cs
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@ -1,196 +0,0 @@
// Copyright (c) Microsoft Open Technologies, Inc. All rights reserved.
// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
using System;
using System.Collections.Generic;
using System.IO;
using System.Threading.Tasks;
using Microsoft.AspNet.Http;
using Microsoft.AspNet.Mvc.Rendering;
using Microsoft.AspNet.Routing;
using Moq;
using Xunit;
namespace Microsoft.AspNet.Mvc.Core.Test
{
public class ViewResultTest
{
// The buffer size of the StreamWriter used in ViewResult.
private const int ViewResultStreamWriterBufferSize = 1024;
[Fact]
public async Task ExecuteResultAsync_WritesOutputWithoutBOM()
{
// Arrange
var expected = new byte[] { 97, 98, 99, 100 };
var view = new Mock<IView>();
view.Setup(v => v.RenderAsync(It.IsAny<ViewContext>()))
.Callback((ViewContext v) =>
{
view.ToString();
v.Writer.Write("abcd");
})
.Returns(Task.FromResult(0));
var routeDictionary = new Dictionary<string, object>();
var viewEngine = new Mock<ICompositeViewEngine>();
var serviceProvider = new Mock<IServiceProvider>();
serviceProvider.Setup(sp => sp.GetService(typeof(ICompositeViewEngine)))
.Returns(viewEngine.Object);
var memoryStream = new MemoryStream();
var response = new Mock<HttpResponse>();
response.SetupGet(r => r.Body)
.Returns(memoryStream);
var context = new Mock<HttpContext>();
context.SetupGet(c => c.Response)
.Returns(response.Object);
context.SetupGet(c => c.RequestServices)
.Returns(serviceProvider.Object);
var actionContext = new ActionContext(context.Object,
new RouteData() { Values = routeDictionary },
new ActionDescriptor());
viewEngine.Setup(v => v.FindView(actionContext, It.IsAny<string>()))
.Returns(ViewEngineResult.Found("MyView", view.Object));
var viewResult = new ViewResult();
// Act
await viewResult.ExecuteResultAsync(actionContext);
// Assert
Assert.Equal(expected, memoryStream.ToArray());
}
[Fact]
public async Task ExecuteResultAsync_UsesProvidedViewEngine()
{
// Arrange
var expected = new byte[] { 97, 98, 99, 100 };
var view = new Mock<IView>();
view.Setup(v => v.RenderAsync(It.IsAny<ViewContext>()))
.Callback((ViewContext v) =>
{
view.ToString();
v.Writer.Write("abcd");
})
.Returns(Task.FromResult(0));
var routeDictionary = new Dictionary<string, object>();
var goodViewEngine = new Mock<IViewEngine>();
var badViewEngine = new Mock<ICompositeViewEngine>(MockBehavior.Strict);
var serviceProvider = new Mock<IServiceProvider>();
serviceProvider.Setup(sp => sp.GetService(typeof(ICompositeViewEngine)))
.Returns(badViewEngine.Object);
var memoryStream = new MemoryStream();
var response = new Mock<HttpResponse>();
response.SetupGet(r => r.Body)
.Returns(memoryStream);
var context = new Mock<HttpContext>();
context.SetupGet(c => c.Response)
.Returns(response.Object);
context.SetupGet(c => c.RequestServices)
.Returns(serviceProvider.Object);
var actionContext = new ActionContext(context.Object,
new RouteData() { Values = routeDictionary },
new ActionDescriptor());
goodViewEngine.Setup(v => v.FindView(actionContext, It.IsAny<string>()))
.Returns(ViewEngineResult.Found("MyView", view.Object));
var viewResult = new ViewResult()
{
ViewEngine = goodViewEngine.Object,
};
// Act
await viewResult.ExecuteResultAsync(actionContext);
// Assert
Assert.Equal(expected, memoryStream.ToArray());
}
public static IEnumerable<object[]> ExecuteResultAsync_DoesNotWriteToResponse_OnceExceptionIsThrownData
{
get
{
yield return new object[] { 30, 0 };
if (PlatformHelper.IsMono)
{
// The StreamWriter in Mono buffers 2x the buffer size before flushing.
yield return new object[] { ViewResultStreamWriterBufferSize * 2 + 30, ViewResultStreamWriterBufferSize };
}
else
{
yield return new object[] { ViewResultStreamWriterBufferSize + 30, ViewResultStreamWriterBufferSize };
}
}
}
// The StreamWriter used by ViewResult an internal buffer and consequently anything written to this buffer
// prior to it filling up will not be written to the underlying stream once an exception is thrown.
[Theory]
[MemberData(nameof(ExecuteResultAsync_DoesNotWriteToResponse_OnceExceptionIsThrownData))]
public async Task ExecuteResultAsync_DoesNotWriteToResponse_OnceExceptionIsThrown(int writtenLength, int expectedLength)
{
// Arrange
var longString = new string('a', writtenLength);
var routeDictionary = new Dictionary<string, object>();
var view = new Mock<IView>();
view.Setup(v => v.RenderAsync(It.IsAny<ViewContext>()))
.Callback((ViewContext v) =>
{
view.ToString();
v.Writer.Write(longString);
throw new Exception();
});
var viewEngine = new Mock<ICompositeViewEngine>();
viewEngine.Setup(v => v.FindView(It.IsAny<ActionContext>(), It.IsAny<string>()))
.Returns(ViewEngineResult.Found("MyView", view.Object));
var serviceProvider = new Mock<IServiceProvider>();
serviceProvider.Setup(sp => sp.GetService(typeof(ICompositeViewEngine)))
.Returns(viewEngine.Object);
var memoryStream = new MemoryStream();
var response = new Mock<HttpResponse>();
response.SetupGet(r => r.Body)
.Returns(memoryStream);
var context = new Mock<HttpContext>();
context.SetupGet(c => c.Response)
.Returns(response.Object);
context.SetupGet(c => c.RequestServices).Returns(serviceProvider.Object);
var actionContext = new ActionContext(context.Object,
new RouteData() { Values = routeDictionary },
new ActionDescriptor());
var viewResult = new ViewResult();
// Act
await Record.ExceptionAsync(() => viewResult.ExecuteResultAsync(actionContext));
// Assert
Assert.Equal(expectedLength, memoryStream.Length);
}
}
}

55
test/Microsoft.AspNet.Mvc.FunctionalTests/ViewEngineTests.cs
View File

@ -49,6 +49,12 @@ ViewWithNestedLayout-Content
</nested-layout>
</layout>"
};
yield return new[]
{
"ViewWithDataFromController",
"<h1>hello from controller</h1>"
};
}
}
@ -141,5 +147,54 @@ component-content";
// Assert
Assert.Equal(expected, body.Trim());
}
public static IEnumerable<object[]> PartialRazorViews_DoNotRenderLayoutData
{
get
{
yield return new[]
{
"ViewWithoutLayout", @"ViewWithoutLayout-Content"
};
yield return new[]
{
"PartialViewWithNamePassedIn", @"ViewWithLayout-Content"
};
yield return new[]
{
"ViewWithFullPath", "ViewWithFullPath-content"
};
yield return new[]
{
"ViewWithNestedLayout", "ViewWithNestedLayout-Content"
};
yield return new[]
{
"PartialWithDataFromController", "<h1>hello from controller</h1>"
};
yield return new[]
{
"PartialWithModel", string.Join(Environment.NewLine,
"my name is judge",
"<partial>98052",
"</partial>")
};
}
}
[Theory]
[MemberData(nameof(PartialRazorViews_DoNotRenderLayoutData))]
public async Task PartialRazorViews_DoNotRenderLayout(string actionName, string expected)
{
// Arrange
var server = TestServer.Create(_provider, _app);
var client = server.CreateClient();
// Act
var body = await client.GetStringAsync("http://localhost/PartialViewEngine/" + actionName);
// Assert
Assert.Equal(expected, body.Trim());
}
}
}

46
test/WebSites/RazorWebSite/Controllers/PartialViewEngineController.cs Normal file
View File

@ -0,0 +1,46 @@
// Copyright (c) Microsoft Open Technologies, Inc. All rights reserved.
// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
using Microsoft.AspNet.Mvc;
namespace RazorWebSite.Controllers
{
public class PartialViewEngineController : Controller
{
public IActionResult ViewWithoutLayout()
{
return PartialView();
}
public IActionResult ViewWithFullPath()
{
return PartialView(@"/Views/ViewEngine/ViewWithFullPath.cshtml");
}
public IActionResult PartialViewWithNamePassedIn()
{
return PartialView("ViewWithLayout");
}
public IActionResult ViewWithNestedLayout()
{
return PartialView();
}
public IActionResult PartialWithDataFromController()
{
ViewData["data-from-controller"] = "hello from controller";
return PartialView("ViewWithDataFromController");
}
public IActionResult PartialWithModel()
{
var model = new Person
{
Name = "my name is judge",
Address = new Address { ZipCode = "98052"}
};
return PartialView(model);
}
}
}

6
test/WebSites/RazorWebSite/Controllers/ViewEngineController.cs
View File

@ -42,5 +42,11 @@ namespace RazorWebSite.Controllers
ViewData["Title"] = "Controller title";
return View("ViewWithTitle");
}
public IActionResult ViewWithDataFromController()
{
ViewData["data-from-controller"] = "hello from controller";
return View("ViewWithDataFromController");
}
}
}

3
test/WebSites/RazorWebSite/Views/PartialViewEngine/PartialWithModel.cshtml Normal file
View File

@ -0,0 +1,3 @@
@model Person
@Model.Name
<partial>@Html.Partial("_Partial", Model.Address)</partial>

1
test/WebSites/RazorWebSite/Views/PartialViewEngine/ViewWithDataFromController.cshtml Normal file
View File

@ -0,0 +1 @@
<h1>@ViewData["data-from-controller"]</h1>

4
test/WebSites/RazorWebSite/Views/PartialViewEngine/ViewWithFullPath.cshtml Normal file
View File

@ -0,0 +1,4 @@
@{
Layout = "/Views/Shared/_Layout.cshtml";
}
ViewWithFullPath-content

4
test/WebSites/RazorWebSite/Views/PartialViewEngine/ViewWithLayout.cshtml Normal file
View File

@ -0,0 +1,4 @@
@{
Layout = "/Views/Shared/_Layout.cshtml";
}
ViewWithLayout-Content

4
test/WebSites/RazorWebSite/Views/PartialViewEngine/ViewWithNestedLayout.cshtml Normal file
View File

@ -0,0 +1,4 @@
@{
Layout = "/Views/ViewEngine/_NestedLayout.cshtml";
}
ViewWithNestedLayout-Content

1
test/WebSites/RazorWebSite/Views/PartialViewEngine/ViewWithoutLayout.cshtml Normal file
View File

@ -0,0 +1 @@
ViewWithoutLayout-Content

1
test/WebSites/RazorWebSite/Views/ViewEngine/ViewWithDataFromController.cshtml Normal file
View File

@ -0,0 +1 @@
<h1>@ViewData["data-from-controller"]</h1>