aspnetcore/test/Microsoft.AspNetCore.Blazor.../DiagnosticRazorIntegrationT...

92 lines
2.7 KiB
C#

// Copyright (c) .NET Foundation. All rights reserved.
// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
using Xunit;
namespace Microsoft.AspNetCore.Blazor.Build.Test
{
public class DiagnosticRazorIntegrationTest : RazorIntegrationTestBase
{
[Fact]
public void RejectsEndTagWithNoStartTag()
{
// Arrange/Act
var result = CompileToCSharp(
"Line1\nLine2\nLine3</mytag>");
// Assert
Assert.Collection(result.Diagnostics,
item =>
{
Assert.Equal("BL9981", item.Id);
Assert.Equal("Unexpected closing tag 'mytag' with no matching start tag.", item.GetMessage());
});
}
[Fact]
public void RejectsEndTagWithDifferentNameToStartTag()
{
// Arrange/Act
var result = CompileToCSharp(
$"@{{\n" +
$" var abc = 123;\n" +
$"}}\n" +
$"<root>\n" +
$" <other />\n" +
$" text\n" +
$" <child>more text</root>\n" +
$"</child>\n");
// Assert
Assert.Collection(result.Diagnostics,
item =>
{
Assert.Equal("BL9982", item.Id);
Assert.Equal("Mismatching closing tag. Found 'child' but expected 'root'.", item.GetMessage());
Assert.Equal(6, item.Span.LineIndex);
Assert.Equal(20, item.Span.CharacterIndex);
});
}
// This is the old syntax used by @bind and @onclick, it's explicitly unsupported
// and has its own diagnostic.
[Fact]
public void OldEventHandlerSyntax_ReportsError()
{
// Arrange/Act
var generated = CompileToCSharp(@"
<elem @foo(MyHandler) />
@functions {
void MyHandler()
{
}
string foo(Action action)
{
return action.ToString();
}
}");
// Assert
var diagnostic = Assert.Single(generated.Diagnostics);
Assert.Equal("BL9980", diagnostic.Id);
}
// This used to be a sugar syntax for lambdas, but we don't support that anymore
[Fact]
public void OldCodeBlockAttributeSyntax_ReportsError()
{
// Arrange/Act
var generated = CompileToCSharp(@"
<elem attr=@{ DidInvokeCode = true; } />
@functions {
public bool DidInvokeCode { get; set; } = false;
}");
// Assert
var diagnostic = Assert.Single(generated.Diagnostics);
Assert.Equal("BL9979", diagnostic.Id);
}
}
}