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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 InKeywordRecommenderTests : KeywordRecommenderTests
{
[Fact]
public async Task TestNotAtRoot_Interactive()
{
await VerifyAbsenceAsync(SourceCodeKind.Script,
@"$$");
}
[Fact]
public async Task TestNotAfterClass_Interactive()
{
await VerifyAbsenceAsync(SourceCodeKind.Script,
"""
class C { }
$$
""");
}
[Fact]
public async Task TestNotAfterGlobalStatement_Interactive()
{
await VerifyAbsenceAsync(SourceCodeKind.Script,
"""
System.Console.WriteLine();
$$
""");
}
[Fact]
public async Task TestNotAfterGlobalVariableDeclaration_Interactive()
{
await VerifyAbsenceAsync(SourceCodeKind.Script,
"""
int i = 0;
$$
""");
}
[Fact]
public async Task TestNotInUsingAlias()
{
await VerifyAbsenceAsync(
@"using Goo = $$");
}
[Fact]
public async Task TestNotInGlobalUsingAlias()
{
await VerifyAbsenceAsync(
@"global using Goo = $$");
}
[Fact]
public async Task TestNotInEmptyStatement()
{
await VerifyAbsenceAsync(AddInsideMethod(
@"$$"));
}
[Fact]
public async Task TestNotAfterFrom()
{
await VerifyAbsenceAsync(AddInsideMethod(
@"var q = from $$"));
}
[Fact]
public async Task TestAfterFromIdentifier()
{
await VerifyKeywordAsync(AddInsideMethod(
@"var q = from x $$"));
}
[Fact]
public async Task TestAfterFromAndTypeAndIdentifier()
{
await VerifyKeywordAsync(AddInsideMethod(
@"var q = from int x $$"));
}
[Fact]
public async Task TestNotAfterJoin()
{
await VerifyAbsenceAsync(AddInsideMethod(
"""
var q = from x in y
join $$
"""));
}
[Fact]
public async Task TestAfterJoinIdentifier()
{
await VerifyKeywordAsync(AddInsideMethod(
"""
var q = from x in y
join z $$
"""));
}
[Fact]
public async Task TestAfterJoinAndTypeAndIdentifier()
{
await VerifyKeywordAsync(AddInsideMethod(
"""
var q = from x in y
join int z $$
"""));
}
[Fact]
public async Task TestAfterJoinNotAfterIn()
{
await VerifyAbsenceAsync(AddInsideMethod(
"""
var q = from x in y
join z in $$
"""));
}
[Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/544158")]
public async Task TestNotAfterJoinPredefinedType()
{
await VerifyAbsenceAsync(
"""
using System;
using System.Linq;
class C {
void M()
{
var q = from x in y
join int $$
""");
}
[Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/544158")]
public async Task TestNotAfterJoinType()
{
await VerifyAbsenceAsync(
"""
using System;
using System.Linq;
class C {
void M()
{
var q = from x in y
join Int32 $$
""");
}
[Fact]
public async Task TestInForEach()
{
await VerifyKeywordAsync(AddInsideMethod(
@"foreach (var v $$"));
}
[Fact]
public async Task TestInForEach1()
{
await VerifyKeywordAsync(AddInsideMethod(
@"foreach (var v $$ c"));
}
[Fact]
public async Task TestInForEach2()
{
await VerifyKeywordAsync(AddInsideMethod(
@"foreach (var v $$ c"));
}
[Fact]
public async Task TestNotInForEach()
{
await VerifyAbsenceAsync(AddInsideMethod(
@"foreach ($$"));
}
[Fact]
public async Task TestNotInForEach1()
{
await VerifyAbsenceAsync(AddInsideMethod(
@"foreach (var $$"));
}
[Fact]
public async Task TestNotInForEach2()
{
await VerifyAbsenceAsync(AddInsideMethod(
@"foreach (var v in $$"));
}
[Fact]
public async Task TestNotInForEach3()
{
await VerifyAbsenceAsync(AddInsideMethod(
@"foreach (var v in c $$"));
}
[Fact]
public async Task TestInterfaceTypeVarianceAfterAngle()
{
await VerifyKeywordAsync(
@"interface IGoo<$$");
}
[Fact]
public async Task TestInterfaceTypeVarianceNotAfterIn()
{
await VerifyAbsenceAsync(
@"interface IGoo<in $$");
}
[Fact]
public async Task TestInterfaceTypeVarianceAfterComma()
{
await VerifyKeywordAsync(
@"interface IGoo<Goo, $$");
}
[Fact]
public async Task TestInterfaceTypeVarianceAfterAttribute()
{
await VerifyKeywordAsync(
@"interface IGoo<[Goo]$$");
}
[Fact]
public async Task TestDelegateTypeVarianceAfterAngle()
{
await VerifyKeywordAsync(
@"delegate void D<$$");
}
[Fact]
public async Task TestDelegateTypeVarianceAfterComma()
{
await VerifyKeywordAsync(
@"delegate void D<Goo, $$");
}
[Fact]
public async Task TestDelegateTypeVarianceAfterAttribute()
{
await VerifyKeywordAsync(
@"delegate void D<[Goo]$$");
}
[Fact]
public async Task TestNotInClassTypeVarianceAfterAngle()
{
await VerifyAbsenceAsync(
@"class IGoo<$$");
}
[Fact]
public async Task TestNotInStructTypeVarianceAfterAngle()
{
await VerifyAbsenceAsync(
@"struct IGoo<$$");
}
[Fact]
public async Task TestNotInBaseListAfterAngle()
{
await VerifyAbsenceAsync(
@"interface IGoo : Bar<$$");
}
[Fact]
public async Task TestNotInGenericMethod()
{
await VerifyAbsenceAsync(
"""
interface IGoo {
void Goo<$$
""");
}
[Fact]
public async Task TestFrom2()
{
await VerifyKeywordAsync(AddInsideMethod(
@"var q2 = from int x $$ ((IEnumerable)src))"));
}
[Fact]
public async Task TestFrom3()
{
await VerifyKeywordAsync(AddInsideMethod(
@"var q2 = from x $$ ((IEnumerable)src))"));
}
[Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/544158")]
public async Task TestNotAfterFromPredefinedType()
{
await VerifyAbsenceAsync(
"""
using System;
using System.Linq;
class C {
void M()
{
var q = from int $$
""");
}
[Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/544158")]
public async Task TestNotAfterFromType()
{
await VerifyAbsenceAsync(
"""
using System;
using System.Linq;
class C {
void M()
{
var q = from Int32 $$
""");
}
[CompilerTrait(CompilerFeature.ReadOnlyReferences)]
[Fact]
public async Task TestInAsParameterModifierInMethods()
{
await VerifyKeywordAsync("""
class Program
{
public static void Test($$ p) { }
}
""");
}
[CompilerTrait(CompilerFeature.ReadOnlyReferences)]
[Fact]
public async Task TestInAsParameterModifierInSecondParameter()
{
await VerifyKeywordAsync("""
class Program
{
public static void Test(int p1, $$ p2) { }
}
""");
}
[CompilerTrait(CompilerFeature.ReadOnlyReferences)]
[Fact]
public async Task TestInAsParameterModifierInDelegates()
{
await VerifyKeywordAsync("""
public delegate int Delegate($$ int p);
""");
}
[CompilerTrait(CompilerFeature.ReadOnlyReferences)]
[Fact]
public async Task TestInAsParameterModifierInLocalFunctions()
{
await VerifyKeywordAsync("""
class Program
{
public static void Test()
{
void localFunc($$ int p) { }
}
}
""");
}
[CompilerTrait(CompilerFeature.ReadOnlyReferences)]
[Fact]
public async Task TestInAsParameterModifierInLambdaExpressions()
{
await VerifyKeywordAsync("""
public delegate int Delegate(in int p);
class Program
{
public static void Test()
{
Delegate lambda = ($$ int p) => p;
}
}
""");
}
[CompilerTrait(CompilerFeature.ReadOnlyReferences)]
[Fact]
public async Task TestInAsParameterModifierInAnonymousMethods()
{
await VerifyKeywordAsync("""
public delegate int Delegate(in int p);
class Program
{
public static void Test()
{
Delegate anonymousDelegate = delegate ($$ int p) { return p; };
}
}
""");
}
[CompilerTrait(CompilerFeature.ReadOnlyReferences)]
[Fact]
public async Task TestInAsModifierInMethodReturnTypes()
{
await VerifyAbsenceAsync("""
class Program
{
public $$ int Test()
{
return ref x;
}
}
""");
}
[CompilerTrait(CompilerFeature.ReadOnlyReferences)]
[Fact]
public async Task TestInAsModifierInGlobalMemberDeclaration()
{
await VerifyAbsenceAsync(SourceCodeKind.Script, """
public $$
""");
}
[CompilerTrait(CompilerFeature.ReadOnlyReferences)]
[Fact]
public async Task TestInAsModifierInDelegateReturnType()
{
await VerifyAbsenceAsync("""
public delegate $$ int Delegate();
class Program
{
}
""");
}
[CompilerTrait(CompilerFeature.ReadOnlyReferences)]
[Fact]
public async Task TestInAsModifierInMemberDeclaration()
{
await VerifyAbsenceAsync("""
class Program
{
public $$ int Test { get; set; }
}
""");
}
[CompilerTrait(CompilerFeature.ReadOnlyReferences)]
[Fact]
public async Task TestInMethodFirstArgumentModifier()
{
await VerifyKeywordAsync("""
class C {
void M() {
Call($$
""");
}
[CompilerTrait(CompilerFeature.ReadOnlyReferences)]
[Fact]
public async Task TestInMethodSecondArgumentModifier()
{
await VerifyKeywordAsync("""
class C {
void M(object arg1) {
Call(arg1, $$
""");
}
[CompilerTrait(CompilerFeature.ReadOnlyReferences)]
[Fact]
public async Task TestInBaseCallFirstArgumentModifier()
{
await VerifyKeywordAsync("""
class C {
public C() : base($$
""");
}
[CompilerTrait(CompilerFeature.ReadOnlyReferences)]
[Fact]
public async Task TestInBaseCallSecondArgumentModifier()
{
await VerifyKeywordAsync("""
class C {
public C(object arg1) : base(arg1, $$
""");
}
[CompilerTrait(CompilerFeature.ReadOnlyReferences)]
[Fact]
public async Task TestInThisCallFirstArgumentModifier()
{
await VerifyKeywordAsync("""
class C {
public C() : this($$
""");
}
[CompilerTrait(CompilerFeature.ReadOnlyReferences)]
[Fact]
public async Task TestInThisCallSecondArgumentModifier()
{
await VerifyKeywordAsync("""
class C {
public C(object arg1) : this(arg1, $$
""");
}
[CompilerTrait(CompilerFeature.ReadOnlyReferences)]
[Fact, WorkItem("https://github.com/dotnet/roslyn/issues/24079")]
public async Task TestInAsParameterModifierInConversionOperators()
{
await VerifyKeywordAsync("""
class Program
{
public static explicit operator double($$) { }
}
""");
}
[CompilerTrait(CompilerFeature.ReadOnlyReferences)]
[Fact, WorkItem("https://github.com/dotnet/roslyn/issues/24079")]
public async Task TestInAsParameterModifierInBinaryOperators()
{
await VerifyKeywordAsync("""
class Program
{
public static Program operator +($$) { }
}
""");
}
[CompilerTrait(CompilerFeature.ReadOnlyReferences)]
[Fact]
public async Task TestInConstructorCallFirstArgumentModifier()
{
await VerifyKeywordAsync("""
class C {
void M() {
new MyType($$
""");
}
[CompilerTrait(CompilerFeature.ReadOnlyReferences)]
[Fact]
public async Task TestInConstructorSecondArgumentModifier()
{
await VerifyKeywordAsync("""
class C {
void M(object arg1) {
new MyType(arg1, $$
""");
}
[CompilerTrait(CompilerFeature.ReadOnlyReferences)]
[Fact]
public async Task TestInMethodFirstNamedArgumentModifier()
{
await VerifyKeywordAsync("""
class C {
void M() {
Call(a: $$
""");
}
[CompilerTrait(CompilerFeature.ReadOnlyReferences)]
[Fact]
public async Task TestInMethodSecondNamedArgumentModifier()
{
await VerifyKeywordAsync("""
class C {
void M(object arg1) {
Call(a: arg1, b: $$
""");
}
[CompilerTrait(CompilerFeature.ReadOnlyReferences)]
[Fact]
public async Task TestInBaseCallFirstNamedArgumentModifier()
{
await VerifyKeywordAsync("""
class C {
public C() : base(a: $$
""");
}
[CompilerTrait(CompilerFeature.ReadOnlyReferences)]
[Fact]
public async Task TestInBaseCallSecondNamedArgumentModifier()
{
await VerifyKeywordAsync("""
class C {
public C(object arg1) : base(a: arg1, b: $$
""");
}
[CompilerTrait(CompilerFeature.ReadOnlyReferences)]
[Fact]
public async Task TestInThisCallFirstNamedArgumentModifier()
{
await VerifyKeywordAsync("""
class C {
public C() : this(a: $$
""");
}
[CompilerTrait(CompilerFeature.ReadOnlyReferences)]
[Fact]
public async Task TestInThisCallSecondNamedArgumentModifier()
{
await VerifyKeywordAsync("""
class C {
public C(object arg1) : this(a: arg1, b: $$
""");
}
[CompilerTrait(CompilerFeature.ReadOnlyReferences)]
[Fact]
public async Task TestInConstructorCallFirstNamedArgumentModifier()
{
await VerifyKeywordAsync("""
class C {
void M() {
new MyType(a: $$
""");
}
[CompilerTrait(CompilerFeature.ReadOnlyReferences)]
[Fact]
public async Task TestInConstructorSecondNamedArgumentModifier()
{
await VerifyKeywordAsync("""
class C {
void M(object arg1) {
new MyType(a: arg1, b: $$
""");
}
[Fact]
public async Task TestExtensionMethods_FirstParameter()
{
await VerifyKeywordAsync(
"""
static class Extensions {
static void Extension($$
""");
}
[Fact, WorkItem("https://github.com/dotnet/roslyn/issues/30339")]
public async Task TestExtensionMethods_FirstParameter_AfterThisKeyword()
{
await VerifyKeywordAsync(
"""
static class Extensions {
static void Extension(this $$
""");
}
[Fact]
public async Task TestExtensionMethods_SecondParameter()
{
await VerifyKeywordAsync(
"""
static class Extensions {
static void Extension(this int i, $$
""");
}
[Fact]
public async Task TestExtensionMethods_SecondParameter_AfterThisKeyword()
{
await VerifyAbsenceAsync(
"""
static class Extensions {
static void Extension(this int i, this $$
""");
}
[Fact]
public async Task TestExtensionMethods_FirstParameter_NonStaticClass()
{
await VerifyKeywordAsync(
"""
class Extensions {
static void Extension($$
""");
}
[Fact]
public async Task TestExtensionMethods_FirstParameter_AfterThisKeyword_NonStaticClass()
{
await VerifyAbsenceAsync(
"""
class Extensions {
static void Extension(this $$
""");
}
[Fact]
public async Task TestExtensionMethods_SecondParameter_NonStaticClass()
{
await VerifyKeywordAsync(
"""
class Extensions {
static void Extension(this int i, $$
""");
}
[Fact]
public async Task TestExtensionMethods_SecondParameter_AfterThisKeyword_NonStaticClass()
{
await VerifyAbsenceAsync(
"""
class Extensions {
static void Extension(this int i, this $$
""");
}
[Fact]
public async Task TestExtensionMethods_FirstParameter_NonStaticMethod()
{
await VerifyKeywordAsync(
"""
static class Extensions {
void Extension($$
""");
}
[Fact]
public async Task TestExtensionMethods_FirstParameter_AfterThisKeyword_NonStaticMethod()
{
await VerifyAbsenceAsync(
"""
static class Extensions {
void Extension(this $$
""");
}
[Fact]
public async Task TestExtensionMethods_SecondParameter_NonStaticMethod()
{
await VerifyKeywordAsync(
"""
static class Extensions {
void Extension(this int i, $$
""");
}
[Fact]
public async Task TestExtensionMethods_SecondParameter_AfterThisKeyword_NonStaticMethod()
{
await VerifyAbsenceAsync(
"""
static class Extensions {
void Extension(this int i, this $$
""");
}
[Fact]
public async Task TestInFunctionPointerTypeNoExistingModifiers()
{
await VerifyKeywordAsync("""
class C
{
delegate*<$$
""");
}
[Theory]
[InlineData("in")]
[InlineData("out")]
[InlineData("ref")]
[InlineData("ref readonly")]
public async Task TestNotInFunctionPointerTypeExistingModifiers(string modifier)
{
await VerifyAbsenceAsync($@"
class C
{{
delegate*<{modifier} $$");
}
[Fact]
public async Task TestInParameterAfterScoped()
{
await VerifyKeywordAsync("""
class C
{
void M(scoped $$)
}
""");
}
[Fact]
public async Task TestInParameterAfterThisScoped()
{
await VerifyKeywordAsync("""
static class C
{
static void M(this scoped $$)
}
""");
}
[Fact]
public async Task TestInAnonymousMethodParameterAfterScoped()
{
await VerifyKeywordAsync("""
class C
{
void M()
{
var x = delegate (scoped $$) { };
}
}
""");
}
}
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