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Validate Tag Helper registration system functionality. 

- This involved adding tests to cover GetTagHelpers methods on the default tag helper descriptor provider.

#70
This commit is contained in:
N. Taylor Mullen 2014-09-08 17:13:36 -07:00
parent 555615f60e
commit 489caed17c
1 changed files with 88 additions and 0 deletions
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test/Microsoft.AspNet.Razor.Test/TagHelpers/TagHelperDescriptorProviderTest.cs Normal file
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// 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.Linq;
using Microsoft.AspNet.Razor.TagHelpers;
using Xunit;
namespace Microsoft.AspNet.Razor.Test.TagHelpers
{
public class TagHelperDescriptorProviderTest
{
[Fact]
public void TagHelperDescriptorProvider_GetTagHelpersReturnsNothingForUnregisteredTags()
{
// Arrange
var divDescriptor = new TagHelperDescriptor("div", "foo1", ContentBehavior.None);
var spanDescriptor = new TagHelperDescriptor("span", "foo2", ContentBehavior.None);
var descriptors = new TagHelperDescriptor[] { divDescriptor, spanDescriptor };
var provider = new TagHelperDescriptorProvider(descriptors);
// Act
var retrievedDescriptors = provider.GetTagHelpers("foo");
// Assert
Assert.Empty(retrievedDescriptors);
}
[Fact]
public void TagHelperDescriptorProvider_GetTagHelpersDoesntReturnNonCatchAllTagsForCatchAll()
{
// Arrange
var divDescriptor = new TagHelperDescriptor("div", "foo1", ContentBehavior.None);
var spanDescriptor = new TagHelperDescriptor("span", "foo2", ContentBehavior.None);
var catchAllDescriptor = new TagHelperDescriptor("*", "foo3", ContentBehavior.None);
var descriptors = new TagHelperDescriptor[] { divDescriptor, spanDescriptor, catchAllDescriptor };
var provider = new TagHelperDescriptorProvider(descriptors);
// Act
var retrievedDescriptors = provider.GetTagHelpers("*");
// Assert
var descriptor = Assert.Single(retrievedDescriptors);
Assert.Same(catchAllDescriptor, descriptor);
}
[Fact]
public void TagHelperDescriptorProvider_GetTagHelpersReturnsCatchAllsWithEveryTagName()
{
// Arrange
var divDescriptor = new TagHelperDescriptor("div", "foo1", ContentBehavior.None);
var spanDescriptor = new TagHelperDescriptor("span", "foo2", ContentBehavior.None);
var catchAllDescriptor = new TagHelperDescriptor("*", "foo3", ContentBehavior.None);
var descriptors = new TagHelperDescriptor[] { divDescriptor, spanDescriptor, catchAllDescriptor };
var provider = new TagHelperDescriptorProvider(descriptors);
// Act
var divDescriptors = provider.GetTagHelpers("div");
var spanDescriptors = provider.GetTagHelpers("span");
// Assert
// For divs
Assert.Equal(2, divDescriptors.Count());
Assert.Contains(divDescriptor, divDescriptors);
Assert.Contains(catchAllDescriptor, divDescriptors);
// For spans
Assert.Equal(2, spanDescriptors.Count());
Assert.Contains(spanDescriptor, spanDescriptors);
Assert.Contains(catchAllDescriptor, spanDescriptors);
}
[Fact]
public void TagHelperDescriptorProvider_DuplicateDescriptorsAreNotPartOfTagHelperDescriptorPool()
{
// Arrange
var divDescriptor = new TagHelperDescriptor("div", "foo1", ContentBehavior.None);
var descriptors = new TagHelperDescriptor[] { divDescriptor, divDescriptor };
var provider = new TagHelperDescriptorProvider(descriptors);
// Act
var retrievedDescriptors = provider.GetTagHelpers("div");
// Assert
var descriptor = Assert.Single(retrievedDescriptors);
Assert.Same(divDescriptor, descriptor);
}
}
}