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// Copyright (c) Microsoft Corporation. All rights reserved. See License.txt in the project root for license information.
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Net.Http;
using System.Net.Http.Formatting;
using System.Web.Http.Controllers;
using System.Web.Http.Filters;
using System.Web.Http.Hosting;
using Moq;
using Xunit;
using Xunit.Extensions;
using Assert = Microsoft.TestCommon.AssertEx;
namespace System.Web.Http
{
public class QueryableAttributeTest
{
private readonly QueryableAttribute _filter = new QueryableAttribute();
private readonly HttpRequestMessage _request = new HttpRequestMessage();
private readonly HttpResponseMessage _response = new HttpResponseMessage();
private readonly HttpActionExecutedContext _actionExecutedContext;
private readonly HttpActionContext _actionContext;
public QueryableAttributeTest()
{
_response.RequestMessage = _request;
_actionContext = ContextUtil.CreateActionContext(ContextUtil.CreateControllerContext(request: _request));
_actionContext.ControllerContext.ControllerDescriptor = new HttpControllerDescriptor
{
ControllerName = "TestControllerName"
};
Mock.Get(_actionContext.ActionDescriptor).Setup(ad => ad.ActionName).Returns("testActionName");
_actionContext.Response = _response;
_actionExecutedContext = ContextUtil.GetActionExecutedContext(_request, _response);
_actionExecutedContext.ActionContext = _actionContext;
}
[Fact]
public void OnActionExecuting_WhenContextParamterIsNull_Throws()
{
Assert.ThrowsArgumentNull(() => _filter.OnActionExecuting(actionContext: null), "actionContext");
}
[Theory]
[InlineData(-1)]
[InlineData(-100)]
public void OnActionExecuting_WhenResultLimitValueIsInvalid_Throws(int resultLimit)
{
_filter.ResultLimit = resultLimit;
Assert.Throws<InvalidOperationException>(() => _filter.OnActionExecuting(_actionContext),
"The value of the ResultLimit property on the Queryable filter applied to action 'testActionName' on controller 'TestControllerName' must be greater than or equal to 0.");
}
[Fact]
public void OnActionExecutedAppendsQueryToResponse()
{
// Arrange
var content = new ObjectContent<IQueryable<int>>(Enumerable.Range(1, 1000).AsQueryable(), new JsonMediaTypeFormatter());
_request.RequestUri = new Uri(String.Format("http://localhost/?{0}", "$top=100"));
_response.Content = content;
// Act
_filter.OnActionExecuted(_actionExecutedContext);
// Assert
// TODO: we are depending on the correctness of QueryComposer here to test the filter which
// is sub-optimal. Reason being QueryComposer is a static class. cleanup with bug#325697
Assert.NotNull(_actionExecutedContext.Response);
Assert.Same(content, _actionExecutedContext.Response.Content);
Assert.Equal(100, ((IQueryable<int>)content.Value).Count());
}
[Fact]
public void OnActionExecuted_WhenActionExecutedContextParameterIsNull_Throws()
{
Assert.ThrowsArgumentNull(() => _filter.OnActionExecuted(actionExecutedContext: null), "actionExecutedContext");
}
[Theory]
[InlineData("$filter=error")]
[InlineData("$top=error")]
[InlineData("$skip=-100")]
public void OnActionExecuted_WhenFilterQueryIsInvalid_SetsBadRequestResponseMessage(string query)
{
// Arrange
_request.RequestUri = new Uri(String.Format("http://localhost/?{0}", query));
_response.Content = new ObjectContent<IQueryable<string>>(Enumerable.Empty<string>().AsQueryable(), new JsonMediaTypeFormatter());
_request.Properties[HttpPropertyKeys.HttpConfigurationKey] = new HttpConfiguration();
// Act
_filter.OnActionExecuted(_actionExecutedContext);
// Assert
Assert.Equal(HttpStatusCode.BadRequest, _actionExecutedContext.Response.StatusCode);
Assert.Contains("The query specified in the URI is not valid.", _actionExecutedContext.Response.Content.ReadAsStringAsync().Result);
}
[Fact]
public void OnActionExecuted_ResponseDoesNotContainIQueryable_DoesNothing()
{
// Arrange
var value = Enumerable.Empty<string>();
var content = new ObjectContent<IEnumerable<string>>(value, new JsonMediaTypeFormatter());
_response.Content = content;
// Act
_filter.OnActionExecuted(_actionExecutedContext);
// Assert
Assert.Same(_response, _actionExecutedContext.Response);
Assert.Same(content, _response.Content);
var resultContent = Assert.IsType<ObjectContent<IEnumerable<string>>>(_actionExecutedContext.Response.Content);
Assert.Same(value, resultContent.Value);
}
[Fact]
public void OnActionExecuted_ContextDoesNotHaveResponse_DoesNothing()
{
// Arrange
_actionExecutedContext.Response = null;
// Act
_filter.OnActionExecuted(_actionExecutedContext);
// Assert
Assert.Null(_actionExecutedContext.Response);
}
[Fact]
public void OnActionExecutedOnNullResponse()
{
// Arrange
HttpRequestMessage request = new HttpRequestMessage();
var actionContext = ContextUtil.GetActionExecutedContext(request, response: null);
// Act & Assert
Assert.DoesNotThrow(() => _filter.OnActionExecuted(actionContext));
Assert.Null(actionContext.Response);
}
}
}
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