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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.
// See the LICENSE file in the project root for more information.
using System.Threading.Tasks;
using Microsoft.CodeAnalysis.Test.Utilities;
using Roslyn.Test.Utilities;
using Xunit;
namespace Microsoft.CodeAnalysis.Editor.CSharp.UnitTests.Recommendations;
[Trait(Traits.Feature, Traits.Features.KeywordRecommending)]
public sealed class DelegateKeywordRecommenderTests : KeywordRecommenderTests
{
[Fact]
public async Task TestAtRoot_Interactive()
{
await VerifyKeywordAsync(SourceCodeKind.Script,
@"$$");
}
[Fact]
public async Task TestAfterClass_Interactive()
{
await VerifyKeywordAsync(SourceCodeKind.Script,
"""
class C { }
$$
""");
}
[Fact]
public async Task TestAfterGlobalStatement()
{
await VerifyKeywordAsync(
"""
System.Console.WriteLine();
$$
""");
}
[Fact]
public async Task TestAfterGlobalVariableDeclaration_Interactive()
{
await VerifyKeywordAsync(SourceCodeKind.Script,
"""
int i = 0;
$$
""");
}
[Fact]
public async Task TestNotInUsing()
{
await VerifyAbsenceAsync(
@"using $$");
}
[Fact]
public async Task TestInUsingAlias()
{
await VerifyKeywordAsync(
@"using Goo = $$");
await VerifyKeywordAsync(
@"using Goo = d$$");
}
[Fact]
public async Task TestInGlobalUsingAlias()
{
await VerifyKeywordAsync(
@"global using Goo = $$");
await VerifyKeywordAsync(
@"global using Goo = d$$");
}
[Fact]
public async Task TestInUsingAliasTypeParameter()
{
// Valid case: using Goo = System.Collections.Generic.IList<delegate*<void>[]>;
await VerifyKeywordAsync(
@"using Goo = T<$$");
}
[Fact]
public async Task TestInGlobalUsingAliasTypeParameter()
{
// Valid case: global using Goo = System.Collections.Generic.IList<delegate*<void>[]>;
await VerifyKeywordAsync(
@"global using Goo = T<$$");
}
[Fact]
public async Task TestInEmptyStatement()
{
await VerifyKeywordAsync(AddInsideMethod(
@"$$"));
}
[Fact]
public async Task TestInCompilationUnit()
{
await VerifyKeywordAsync(
@"$$");
}
[Fact]
public async Task TestAfterExtern()
{
await VerifyKeywordAsync(
"""
extern alias Goo;
$$
""");
}
[Fact]
public async Task TestAfterUsing()
{
await VerifyKeywordAsync(
"""
using Goo;
$$
""");
}
[Fact]
public async Task TestAfterGlobalUsing()
{
await VerifyKeywordAsync(
"""
global using Goo;
$$
""");
}
[Fact]
public async Task TestAfterNamespace()
{
await VerifyKeywordAsync(
"""
namespace N {}
$$
""");
}
[Fact]
public async Task TestAfterFileScopedNamespace()
{
await VerifyKeywordAsync(
"""
namespace N;
$$
""");
}
[Fact]
public async Task TestAfterTypeDeclaration()
{
await VerifyKeywordAsync(
"""
class C {}
$$
""");
}
[Fact]
public async Task TestAfterDelegateDeclaration()
{
await VerifyKeywordAsync(
"""
delegate void Goo();
$$
""");
}
[Fact]
public async Task TestAfterMethod()
{
await VerifyKeywordAsync(
"""
class C {
void Goo() {}
$$
""");
}
[Fact]
public async Task TestAfterField()
{
await VerifyKeywordAsync(
"""
class C {
int i;
$$
""");
}
[Fact]
public async Task TestAfterProperty()
{
await VerifyKeywordAsync(
"""
class C {
int i { get; }
$$
""");
}
[Fact]
public async Task TestNotBeforeUsing()
{
await VerifyAbsenceAsync(SourceCodeKind.Regular,
"""
$$
using Goo;
""");
}
[Fact(Skip = "https://github.com/dotnet/roslyn/issues/9880")]
public async Task TestNotBeforeUsing_Interactive()
{
await VerifyAbsenceAsync(SourceCodeKind.Script,
"""
$$
using Goo;
""");
}
[Fact]
public async Task TestNotBeforeGlobalUsing()
{
await VerifyAbsenceAsync(SourceCodeKind.Regular,
"""
$$
global using Goo;
""");
}
[Fact(Skip = "https://github.com/dotnet/roslyn/issues/9880")]
public async Task TestNotBeforeGlobalUsing_Interactive()
{
await VerifyAbsenceAsync(SourceCodeKind.Script,
"""
$$
global using Goo;
""");
}
[Fact]
public async Task TestAfterAssemblyAttribute()
{
await VerifyKeywordAsync(
"""
[assembly: goo]
$$
""");
}
[Fact]
public async Task TestAfterRootAttribute()
{
await VerifyKeywordAsync(
"""
[goo]
$$
""");
}
[Fact]
public async Task TestAfterNestedAttribute()
{
await VerifyKeywordAsync(
"""
class C {
[goo]
$$
""");
}
[Fact]
public async Task TestInsideStruct()
{
await VerifyKeywordAsync(
"""
struct S {
$$
""");
}
[Fact]
public async Task TestInsideInterface()
{
await VerifyKeywordAsync("""
interface I {
$$
""");
}
[Fact]
public async Task TestInsideClass()
{
await VerifyKeywordAsync(
"""
class C {
$$
""");
}
[Fact]
public async Task TestNotAfterPartial()
=> await VerifyAbsenceAsync(@"partial $$");
[Fact]
public async Task TestNotAfterAbstract()
=> await VerifyAbsenceAsync(@"abstract $$");
[Fact]
public async Task TestAfterInternal()
{
await VerifyKeywordAsync(
@"internal $$");
}
[Fact]
public async Task TestAfterPublic()
{
await VerifyKeywordAsync(
@"public $$");
}
[Fact]
public async Task TestAfterPrivate()
{
await VerifyKeywordAsync(
@"private $$");
}
[Fact]
public async Task TestAfterProtected()
{
await VerifyKeywordAsync(
@"protected $$");
}
[Fact]
public async Task TestNotAfterSealed()
=> await VerifyAbsenceAsync(@"sealed $$");
[Fact]
public async Task TestAfterStatic()
{
await VerifyKeywordAsync(SourceCodeKind.Regular, @"static $$");
await VerifyKeywordAsync(SourceCodeKind.Script, @"static $$");
}
[Theory, WorkItem("https://github.com/dotnet/roslyn/issues/53585")]
[ClassData(typeof(TheoryDataKeywordsIndicatingLocalFunction))]
public async Task TestAfterKeywordIndicatingLocalFunction(string keyword)
{
await VerifyKeywordAsync(SourceCodeKind.Regular, AddInsideMethod(@$"{keyword} $$"));
await VerifyKeywordAsync(SourceCodeKind.Script, AddInsideMethod(@$"{keyword} $$"));
}
[Fact]
public async Task TestAfterStaticPublic()
{
await VerifyAbsenceAsync(SourceCodeKind.Regular, @"static public $$");
await VerifyKeywordAsync(SourceCodeKind.Script, @"static public $$");
}
[Fact]
public async Task TestAfterDelegate()
=> await VerifyKeywordAsync(@"delegate $$");
[Fact]
public async Task TestDelegateAsArgument()
{
await VerifyKeywordAsync(AddInsideMethod(
@"Assert.Throws<InvalidOperationException>($$"));
}
[Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/538264")]
public async Task TestNotInConstMemberInitializer1()
{
await VerifyAbsenceAsync(
"""
class E {
const int a = $$
}
""");
}
[Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/538264")]
public async Task TestNotInEnumMemberInitializer1()
{
await VerifyAbsenceAsync(
"""
enum E {
a = $$
}
""");
}
[Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/538264")]
public async Task TestNotInConstLocalInitializer1()
{
await VerifyAbsenceAsync(
"""
class E {
void Goo() {
const int a = $$
}
}
""");
}
[Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/538264")]
public async Task TestInMemberInitializer1()
{
await VerifyKeywordAsync(
"""
class E {
int a = $$
}
""");
}
[Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/538804")]
public async Task TestInTypeOf()
{
await VerifyKeywordAsync(AddInsideMethod(
@"typeof($$"));
}
[Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/538804")]
public async Task TestInDefault()
{
await VerifyKeywordAsync(AddInsideMethod(
@"default($$"));
}
[Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/538804")]
public async Task TestInSizeOf()
{
await VerifyKeywordAsync(AddInsideMethod(
@"sizeof($$"));
}
[Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/544219")]
public async Task TestNotInObjectInitializerMemberContext()
{
await VerifyAbsenceAsync("""
class C
{
public int x, y;
void M()
{
var c = new C { x = 2, y = 3, $$
""");
}
[Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/607197")]
public async Task TestAfterAsyncInMethodBody()
{
await VerifyKeywordAsync("""
using System;
class C
{
void M()
{
Action a = async $$
""");
}
[Fact]
public async Task TestAfterAsyncInMemberDeclaration()
{
await VerifyKeywordAsync("""
using System;
class C
{
async $$
""");
}
[Fact]
public async Task TestInFunctionPointerTypeList()
{
await VerifyKeywordAsync("""
using System;
class C
{
delegate*<$$
""");
}
[Fact]
public async Task TestNotInEnumBaseList()
{
await VerifyAbsenceAsync("enum E : $$");
}
[Fact, WorkItem("https://github.com/dotnet/roslyn/issues/70076")]
public async Task TestNotInAttribute()
{
await VerifyAbsenceAsync("""
class C
{
[$$]
void M()
{
}
}
""");
}
[Fact, WorkItem("https://github.com/dotnet/roslyn/issues/68399")]
public async Task TestNotInRecordParameterAttribute()
{
await VerifyAbsenceAsync(
"""
record R([$$] int i) { }
""");
}
#region Collection expressions
[Fact, WorkItem("https://github.com/dotnet/roslyn/issues/70677")]
public async Task TestInCollectionExpressions_BeforeFirstElementToVar()
{
await VerifyKeywordAsync(AddInsideMethod(
"""
var x = [$$
"""));
}
[Fact, WorkItem("https://github.com/dotnet/roslyn/issues/70677")]
public async Task TestInCollectionExpressions_BeforeFirstElementToReturn()
{
await VerifyKeywordAsync(
"""
class C
{
IEnumerable<string> M() => [$$
}
""");
}
[Fact, WorkItem("https://github.com/dotnet/roslyn/issues/70677")]
public async Task TestInCollectionExpressions_AfterFirstElementToVar()
{
await VerifyKeywordAsync(AddInsideMethod(
"""
var x = [new object(), $$
"""));
}
[Fact, WorkItem("https://github.com/dotnet/roslyn/issues/70677")]
public async Task TestInCollectionExpressions_AfterFirstElementToReturn()
{
await VerifyKeywordAsync(
"""
class C
{
IEnumerable<string> M() => [string.Empty, $$
}
""");
}
[Fact, WorkItem("https://github.com/dotnet/roslyn/issues/70677")]
public async Task TestInCollectionExpressions_SpreadBeforeFirstElementToReturn()
{
await VerifyKeywordAsync(
"""
class C
{
IEnumerable<string> M() => [.. $$
}
""");
}
[Fact, WorkItem("https://github.com/dotnet/roslyn/issues/70677")]
public async Task TestInCollectionExpressions_SpreadAfterFirstElementToReturn()
{
await VerifyKeywordAsync(
"""
class C
{
IEnumerable<string> M() => [string.Empty, .. $$
}
""");
}
[Fact, WorkItem("https://github.com/dotnet/roslyn/issues/70677")]
public async Task TestInCollectionExpressions_ParenAtFirstElementToReturn()
{
await VerifyKeywordAsync(
"""
class C
{
IEnumerable<string> M() => [($$
}
""");
}
[Fact, WorkItem("https://github.com/dotnet/roslyn/issues/70677")]
public async Task TestInCollectionExpressions_ParenAfterFirstElementToReturn()
{
await VerifyKeywordAsync(
"""
class C
{
IEnumerable<string> M() => [string.Empty, ($$
}
""");
}
[Fact, WorkItem("https://github.com/dotnet/roslyn/issues/70677")]
public async Task TestInCollectionExpressions_ParenSpreadAtFirstElementToReturn()
{
await VerifyKeywordAsync(
"""
class C
{
IEnumerable<string> M() => [.. ($$
}
""");
}
[Fact, WorkItem("https://github.com/dotnet/roslyn/issues/70677")]
public async Task TestInCollectionExpressions_ParenSpreadAfterFirstElementToReturn()
{
await VerifyKeywordAsync(
"""
class C
{
IEnumerable<string> M() => [string.Empty, .. ($$
}
""");
}
#endregion
[Fact]
public async Task TestWithinExtension()
{
await VerifyKeywordAsync(
"""
static class C
{
extension(string s)
{
$$
}
}
""", CSharpNextParseOptions);
}
}
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